Fm stereo device

[Detailed Description of the Invention]

Especially the present invention relates to the device for reproducing FM stereo sound it was made to decrease noise and distortion, while the stereo sound reproduced by FM stereo carries out Quality maintenance. When reproducing FM wireless transfer in mono-mode, it is publicly known that comparatively little comparatively good sound reproduction with little background noise is obtained. However, when carrying out FM transmission of the stereo signal, it is also publicly known that noise and distortion increase far. That is, a L-R sound tends to produce multiplex way distortion. this -- FM signal -- Bill Tyng's side wall, and a hill -- or if reflected by Beams depending on the case, it will be generated in order that the 2nd or 3rd delay signal may reach a receiver. If the main signal directly transmitted to the receiver is overlapped on these delay signals, distortion will be produced to the mixed signal reproduced. A general method of generating FM stereo is transmitting a L+R signal (this is the combination of a left stereo signal and a right stereo signal) as frequency modulation on a radio cycle subcarrier. If this is double-Tone(ed), it has a signal in a 0 thru/or 15-kHz frequency band. The L-R signal ingredient (this is a difference of a left stereo signal and a right stereo signal) is also included, and this is transmitted focusing on a 38-kHz subsubcarrier by the frequency band of the range of about 23 kHz thru/or 53 kHz. These 2 sets of signals are supplied to the Decoating matrix which dissociates in a receiver, and mixes these signals and it divides into L and R output corresponding to the original left and right stereo signal, Furthermore, in order for L and R output to generate stereo Sarandh, the L+R signal itself supplied to the left and the right speaker is good, but the random noise of Mostly and multiplex way distortion originate in the L-R signal. To remove, or it deals with random noise within this L-R signal and distortion and carries out a mask until now has been tried. It was admitted that the unnecessary noise of Mostly and distortion existed in number within the limits of high frequency of a L-R signal, and it was one measure to erase several copies of high frequency of a L-R signal ingredient, especially the portion into which signal strength is low and noise and distortion are conspicuous from this reason. Such a measure is indicated by U.S. Pat. No. 3,943,293. However, if it removes or it erases L-R information in this way, as a result of [ Lost in most stereo effects ] being divided and transmitting a L+R signal from both speakers, not a full stereo sound but the sound of mono-A state will come to occur as a matter of fact. As this comprehensive effect, a sound is [ as opposed to / when music is performed by Ryo Oto / a stereo effect ] To move about a speaker. However, if musical volume begins to become small, it will come to move to the middle position from the position of a speaker. Similarly, when the independent musical instrument is played by Ryo Oto, it is audible so that it may come from a speaker position, but when the same musical instrument is performing more soft, it will move to the position between speakers. Another, important thing is that many conventional measures had overlooked the importance of what is called the "Ambient" sound in stereophonic recording, or its role. It is reflected at a recording place and the quality of stereophonic recording is influenced by the sound picked up with the microphone for recording next. If it is added to a fundamental sound easy sound whether these sounds are directivity or are not so or, they will make the rich sound near a live performance. These reflection, i.e., a delay sound, is the above-mentioned "Ambient" sounds. It is reproducing FM stereo sound so that random noise and distortion may be made into the minimum, the object of the present invention maintaining the abundance of direction information and the original stereo signal in view of the above point. The device of the present invention supplies FM stereo output which includes the L-R signal corresponding to the difference of the L+R signal corresponding to the difference of L signal and R signal, and L signal and R signal and which has been improved. This device is provided with the input means which generates the input signal which is by Becoming from a L+R signal ingredient and a L-R signal ingredient. An output means is mixed in response to the signal ingredient of; these on a level high enough, generating the 1st output mode that contains the 1st attitude ingredient further corresponding with L signal, and the 2nd output component further corresponding with R signal, and can provide direction information -- at least [; or ] -- receiving a L+R signal on a level higher enough than a L-R signal The matrix means which generates the 2nd output mode that the 1st and 2nd above-mentioned output components correspond [ both ] closely by a L+R ingredient is included. Including the detector means, the 1st signal portion in which a more rapid change of amplitude exists is detected from the above-mentioned signal, transmitting the L-R signal ingredient of these 1st signal portion on the above-mentioned, level high enough, and generating the 1st output mode --; -- the -- it also has the control means which decreases a L-R signal ingredient to a L+R signal ingredient in the 2nd [ other than the signal portion of one ] signal portion, and generates the 2nd output mode. A L+R signal ingredient is received, a delay L+R signal input is supplied to an output means, and the time delay means which makes an output means generate a delay L+R output by it is also included. a control means -- the inside of the 2nd above-mentioned signal portion -- mainly -- a part for several copies of high frequency of a L-R signal ingredient -- a decrease -- little To -- it is preferred that it is like. That is, a control means can be provided with the low pass filter which transmits a part for several copies of low frequency waves of a L-R ingredient regardless of a detector means. The control means is provided with a widening machine means to transmit this L-R signal ingredient to a matrix means in response to a L-R signal ingredient if it explains in more detail. A detector means answers a rapid change of amplitude, a detector means answers detecting a rapid change of amplitude, and a widening machine means transmits a L-R signal ingredient on a high level. As another special feature, a noise control means can be connected to a widening machine means and parallel at a matrix, and a L-R signal ingredient can be transmitted to a matrix means. The noise control means has alternatively a switching means which can operate, and the L-R signal ingredient supplied by the noise control means is decreased so that the noise resulting from a L-R signal ingredient may be made to Remaining. In one shape, a detector means mainly answers the rapid increase in the amplitude of a signal. In another shape, a detector means answers both rapid increases and reduction of the amplitude of a signal. The time delay input is provided with the 1st time delay device that generates the 1st delay L+R signal input that carried out delay to eye short Or, and the 2nd time delay device that generates the delay L+R signal input of bottom 2nd for delay to a long eye in desirable shape. The control means is provided also with the time delay control means which controls the amplitude of a delay L+R signal input according to the relative signal strength of the L-R signal ingredient to a L+R signal ingredient. One time delay device generates the time delay input in the number range of high frequency of a L+R signal ingredient, and, as for a time delay input, the time delay device of another side generates the delay input in several copies of low frequency waves of a L+R signal ingredient. That is, the 1st time delay device generates the time delay input of eye short Or in the number of high frequency, and the 2nd time delay device generates the time delay input of a long eye in the number of low frequency waves. It is preferred to establish the filter means which supplies the input which received several copies of low as well as high frequency of the time delay input in response to the input from a time delay means, decreased the intermediate frequency portion, and was changed to an output means. In order to control the amplitude of a delay input, the comparator including 1st and 2nd means to generate the 1st and 2nd output values connected with the logarithm of each input value in response to the 1st and 2nd input values connected with the L+R signal ingredient and the L-R signal ingredient, respectively is formed. The 1st and 2nd output values are deducted and made Mutually by the 3rd means, and the 3rd output value connected with the true numerical value of the ratio of the 1st and 2nd input values is made. 4th means to impress this 3rd output to a time delay control means, and to make the amplitude of a delay input increase or decrease is established. The control logic means is established and an output means is made to answer a control means alternatively in desirable shape. The logic means is provided with a signal strength indicator means to answer the value connected with the input signal and to determine the low signal strength state where signal strength is lower than a predetermined signal value. moreover -- it is a relation to an input signal -- the price -- Was done -- a value -- it also has the multiplex way distortion directing means which answers change and directs the multiplex way distortion state where multiplex way distortion is higher than a predetermined multiplex way distortion level. It also has the logic means which answers a signal strength indicator and a multiplex way distortion indicator, and makes an output means answer for any of a low signal strength state or a multiplex way distortion state being. It is desirable to also provide the temporal logic circuit which makes a control logic means start the predetermined inspection period when a signal strength directing means and the multiplex way distortion directing means operate. a muting means to erase the output of a device during the inspection for a logic circuit means -- To include -- things -- Despair -- . A logic circuit means is made to answer the office change indicating means of a device, and an inspection period is made to start when the office input to a device strengthens. In desirable shape, answer the muting signal of a device, a temporal logic circuit is made to start an inspection period, and the muting signal input means which operates a signal strength indicator and a multiplex way distortion indicator by it is established. a trigger switch means to answer and appear in initial operation of a control means, and to make an inspection period start is established. This trigger switch means can be made to also make a sound output erase during time after it answers de-energizing of a control means and a control means is de-energized by the temporal logic circuit means until L and R signal are transmitted directly from an output means. In the specific example mentioned below, the detector hand received the value connected with the L-R signal ingredient, and is provided with the capacitor means which transmits the difference signal connected with the variation speed of a L-R signal ingredient. The signal control means which answers this difference signal and generates a control signal is established. The L-R variable transmission means which transmits a L-R signal ingredient to an output means with a variable output level is also established. This transmission means answers a control signal and transmits the L-R signal ingredient of the high or low level depending on the differentiation output from a capacitor means. If it explains in full detail, the detector means includes the rectification means which generates the L-R signal value rectified in response to the L-R signal. a widening machine means to generate a between charge attachment Was done value for a L-R signal ingredient in response to this rectified value is also established. A means to Offer the circuit from a widening machine to a signal control means is established, and the value connected with the signal control means at the absolute value of the L-R signal ingredient is transmitted. The steering diode is inserted between the capacitor means and the L-R signal control means, and a L-R signal control means is made to answer both increases and reduction of the amplitude of a differentiation signal in the another operation side. In the method of the present invention, the above input signals are supplied and the stage of detecting the 1st signal portion in which a more rapid change of amplitude exists from this signal next is included. The stage of mixing in response to both the signal ingredient between the 1st signal portion on a level respectively high enough, and generating the 1st output mode, and generating the 2nd appearance Cap mode between the 2nd signal portion contains. Since the more specific special feature of the method of the present invention corresponds to the operation which an above-mentioned device carries out, it omits repeating here. Other special features of the present invention will become clear from the explanation based on the following appending drawings. Probably, it will be wise to explain the background of the phenomenon of some of that stereophonic recording is performed how first and a stereo sound, in order to understand the new special feature of the present invention clearly. Then, the way of stereophonic recording is summarized with reference to Drawing 1. In I preparation, the very general method of performing stereophonic recording is carrying out about microphones 10 and 12 of two trees which set the circuit to Mutually. Although a sound source is arranged in various positions ahead of microphones 10 and 12 (namely, a musical instrument, a voice, a drum, etc.), Drawing 1 has shown five sound sources in diagram by 14, 16, 18, 20, and 22. thing K sound source 18 is in the equal distance from two microphones 10 and 12, therefore can receive the sound from sound source 18 in each microphone 10 and 12 by the same strength simultaneous -- it becomes. So, when the signal corresponding to the sound from sound source 18 is reproduced by stereo A Bi power, the same sound will be simultaneously reproduced from both speakers. therefore, the sound from sound source 18 turns into a mono-sound mostly, and comes from the position of the center of two speaker positions -- as -- touch h To. However, if a sound occurs from the sound source far near [ another side ] one microphone, with each microphone, these sounds will completely differ and will come to be recorded. For example, the sound from sound source 14 reaches microphone 10 by time earlier than microphone 12 and large intensity. If stereophonic reproduction of the recorded signal is carried out with two speakers, a loud sound will occur from the speaker which is one side first, The same small sound occurs from the speaker of another side after (it is correspondence to the sound which was able to be received with microphone 10), and a short time (this corresponds to the sound which microphone 12 received). This kind of sound has more directional characteristics relevant to a stereo. It seems that a certain thing was emitted from both speakers, and the combination of these sounds in which other things are considered to be the separation sounds from each speaker produces a comprehensive stereo effect. In addition, the above-mentioned "Ambient" sound be called sound exists. These are the sounds which reflected from the wall or other objects of the recording place, and were picked up by the microphone. If these reflective sounds are reproduced with a speaker, since these apply some echoes or the effect of a reflective sound, they will come to be heard as live music of A room or a music hole. Generally the direction information on a stereo signal is not in these Ambient sounds by Almost including. Rather, these are reproduced in the shape of the general echo which generally exists in the neighborhood of a sound source, or a background sound. In order to recognize the new special feature of the present invention correctly, it is necessary to explain how direction information is detected from a sound. As an example, the person shall open the sound from the position on the left-hand side of [ 1 front ] a certain person. Since a sound source is near by the person's left ear, a sound source reaches a left ear first and reaches a right ear immediately after. It changes into this respond to short paddle delay extremely and concerning [ people's brain ] sound source in this direction information at the time of the sound with people's same hearing mechanism reaching people's ear. However, providing direction information should note being an initial sound wave (namely, "standup edge" of a sound wave). In order to further explain this, I will consider walking and going into Takumi in whom the humming sound with a certain constant person exists. This sound can begin to be heard if that person opens the door of A room. This is a fixed sound, and since there is "no standup edge", direction information is not included. The only method by which the person can determine a sound source is moving to a different position and detecting the difference of the amplitude of a sound. When the person finally arrives at the position whose Digging is the maximum, the person can presume that it is the closest to a sound source. However, if it shall be "beeping" sound turned on and turned off, that person can detect the "standup edge" of each beep instead of a fixed ham sound quickly, and this direction information may be changed into it at the information which expresses a sound source immediately. Discontinuation of the sound also includes direction information. After a sound is completed rapidly, the ear of the direction near a sound source detects disappearance of a sound earlier than the ear of another side. This information is changed as direction information within people's brain, and it gives identifying the position of a sound source. Laying the above thing on heart, FM stereo signal is transmitted, it is received and I will observe the common way reproduced as an audible sound. Generally (that complexity being outside the range of this short introduction), since [ of a start of an FM broadcast ] historical, and FM stereo signal are not transmitted as a pure left stereo signal and a pure right stereo signal. The 1st signal ingredient that is a L+R signal ingredient (put together as a left stereo signal and a right stereo signal) not right [ that ] is contained. This signal ingredient is transmitted on low frequency (15 kHz or less of Immediatelys). The 2nd stereo ingredient that is a L-R ingredient (namely, ingredient which is on the left of a left stereo signal and a right stereo signal) is also contained. This signal ingredient is transmitted on high frequency (Immediately, the number of circumferential 1 skins made into all the 58-kHz frequency centers). two signal ingredients are received, and it is changed into a An audio signal, and is appropriately mixed in a matrix (or -- a certain case) L signal (it corresponds to a left stereo signal) and R signal (it corresponds to a right stereo signal) are acquired as getting over directly to the 19-kHz pilot signal for a synchronization by the synchronous switching by which the phase lock was carried out. By mixing a L+R ingredient and a L-R ingredient first, this negates R portion and is attained by leaving 2L and transmitting this to one speaker. Next, by mixing a L+R ingredient and the reversed L-R ingredient (namely, R-L ingredient), 2R signal is made and it transmits to the right speaker. Now, I will investigate the model of the information included in the L+R ingredient and the L-R ingredient. A L+R ingredient supports mono-Honnic information and, on the other hand, the L-R ingredient is supporting space information. This space information can be classified into two more accessory ingredients. The 1st is normal position information which identifies the sound which comes from one speaker or the speaker of another side. The 2nd is the Ambient information connected with the sound which reflected from the wall and other objects of the recording place, and was picked up with the microphone as mentioned above. Generally, the portion (probably about 85%) of Mostly of the information in a L-R ingredient is the redundant Ambient information from the L+R ingredient being included. In view of this point, the approach J Taken in the device and method of the present invention Mentality this redundancy, and uses only information required to reproduce the direction information on a stereo effect from a L-R ingredient. Generally, about the information within the L-R signal it can be considered that is redundant, it puts searching for this information from a L-R ingredient with this approach in a L+R ingredient, and cuts down in it. That is not right and he is trying to reconstruct this information from a L+R ingredient in the shape which does not have noise and distortion comparatively. Please refer to Drawing 2 which is a block diagram of the main ingredients of a tree invention, laying the above thing on heart. FM stereophonic information should be constituted as a L+R ingredient and a L-R ingredient, these two ingredients should Transformation receiving Cut off by FM tuner, this FM tuner should Transformation these to to the An audio signal, and it should mix in the suitable matrix, and should generate L and R signal output. Such L and R stereo output can transmit to the direct left and the right speaker, and can play stereo music. It is possible for FM stereo office to have a quite powerful signal, and to play good stereo music from these signals, if there is little multiplex way distortion according to its ability. However, if a signal is weak or a considerable multiplex way distortion exists, a L-R ingredient will be reproduced by L and R output signal which are reproduced by deteriorating. Then, if the device shown in Drawing 2 is added to common FM stereo receiver, L and R output signal which have been improved by the output of this receiver can be acquired. However, it should also understand the present invention that L+R and the L-R signal ingredient which were received first can be used. Input matrix 30 shown in Drawing 2 has received L and R stereo signal which are acquired from common FM stereo receiver. This input matrix 30 supplies L and R signal to logic drive output switching device 38 (related in detail after-mentioned) through lines 32 and 34. Determination temporal logic device 36 determines to be more than the minimum level which investigates the control voltage of a tuner and has (b) signal strength, and that the multiplex way distortion of a (Ro) signal is below a predetermined level. If the state of these both exists, L and R signal will be sent to direct logic drive appearance dregs itching device 38, without receiving processing beyond it, and device 38 will supply these signals to direct left output 40 and right output 42. If it puts in another way, since L and R signal are already good enough, they will be simply sent to output terminals 40 and 4.2, without being processed more. However, it comes to make the amount of main driving creation of a signal or the present invention which determination temporal logic device 36 will detect this, and will explain below if it is too weak or there is too much multiplex way distortion operate. Input matrix 30 is To work also so that two L and R signals may be mixed, L and R ingredient may be deducted for a L+R signal to output terminal 44 again and a L-R ingredient may be generated in output terminal 46. This L+R ingredient is supplied to input terminal 52 of output matrix 52 through line 48. A L+R signal is supplied also to 1st delay device 56 through line 54 from terminal 44. Only short paddle time increment (the specific example of illustration about 11 milliseconds) delays this signal comparatively, and device 56 supplies this delay signal to upper-layers passage filter 58. Filter 58 makes adding point 59 pass only the ingredient of a signal higher than 3 kHz. The L+R signal from terminal 44 is impressed also to low pass filter 60 through line 54. Filter 60 makes 3 pass only the portion of a signal lower than KHz. The output from filter 60 is sent to 2nd time delay device 62 that gives comparatively long delay (the specific example of illustration about 26 milliseconds). The delay output from device 62 is supplied to high pass filter 64 which passes only signal ingredient of about 480 Hz or more. However, since the delay output from device 62 is supplied also to resistance 65 in parallel with filter 64, several copies of low frequency waves of a delay L-R signal come to be impressed to adding point 59 with low amplitude. Therefore, about 26 milliseconds of signals supplied from high pass filter 64 are delayed. It has the frequency of the range of about 480 Hz thru/or 5,000 Hz. This signal is supplied to adding point 59. The mixed signal from adding point 59 is impressed to automatic-gain-control (AGC) widening machine 66. The function of this widening machine 66 is weakening the output from adding point 59, or strengthening depending on the size of the ratio of a L-R ingredient to that [ L+R ]. A rest is taken at this point, and explanation will describe the general object of the above-mentioned ingredient concerning playback of L and R signal, in order to obtain good music. By pre- explanation, the information on Mostly in a L-R channel wants to remember the described redundant thing to a L+R channel. It turned out by this redundant information delaying a signal using a L+R signal that it can reproduce very advantageous in a sense by reintroducing this signal into output matrix 52. However, it is necessary to control the amplitude of a delay L+R signal so that the delayed L+R signal corresponds to the intensity of a L-R ingredient. For this reason, the delay signal from adding point 59 is supplied to AGC widening machine 66. In order to control widening machine 66, comparator circuit 68 which generates the output proportional to the ratio of a L-R ingredient to that [ L+R ] is used. In order to carry this out, A comparator evening 68 has two inputs, Converter 70 changes this into a direct current signal from terminal 44 in response to a L+R output component, and impresses it to logarithm / reverse logarithm comparator 68 as it is the name to which the output from L+R DC converter 70 and L-R DC converter 72 is supplied. L-R DC converter 72 supplies a direct-current ingredient corresponding in response to a L-R signal ingredient from output terminal 46 of matrix 40 to comparator 68. This comparator 68 is the common design thing (or interfering, even if that is right there is nothing), and it mentions it below about this. As mentioned above, the output from comparator 68 determines the intensity of the signal supplied from adding point 59. If a L-R ingredient is comparatively strong as compared with a L+R ingredient, widening machine 66 will widen the output from adding point 59 on a higher profit. It becomes this contrary when the specific output from comparator 68 is high. The output from widening machine 66 is supplied to low (or even if that is right, it does not interfere) Q zone prevention filter 74 of a common setup. It seems that this filter 74 operates the output from widening machine 66 orthopedically, To work, i.e., filter 74, attenuates some of the sound of an intermediate frequency belt so that it may be closely adjusted with the spectral shape of a L-R ingredient, and the pattern of this attenuation is shown in Drawing 6. Now, I will progress to explanation of the very important special feature of the present invention. The L-R ingredient from output terminal 46 is supplied to "standup marginal detector" 78 and noise control device 79 which operates alternatively through low pass filter 76. Filter 76 and detector 78 Harsh sound low-pass device 79 are connected in parallel with Mutually, and the output of these two ingredients 76 and 78 is impressed to adding point 80. Adding point 80 has also undergone the output from low Q zone prevention filter 74. low pass filter 76 passes only several copies of low frequency waves (namely, this example frequency portion of 450 Hz or less) of a L-R ingredient on a low level (namely, -- carrying out about 8 db fall). As for a part for several copies of this low frequency wave of the L-R ingredient reduced only to about 8 db in amplitude, it turned out that Almost not included and multiplex way distortion do not include the noise which is not desirable in Mostly completeness, either. Therefore, this is supplied to adding point 80, without being blocked (except for amplitude reduction). Standup marginal detector 78 answers only a comparatively rapid change (that is, any of a rapid increase or reduction of amplitude are they?) of the amplitude of a L-R signal. If such a rapid change occurs, detector 78 will flow and it will come to supply the portion of a L-R signal to adding point 80 on a high level. in order to maintain a sound signal at a stable state -- detector 78 -- a signal -- all -- it fully supplies on a fall Brought level. The output from adding point 80 is supplied to input terminal 82 of output matrix 52. It is mixed, and in L and R terminals 40 and 42, the input to terminal 82 and the L+R ingredient input to terminal 50 serve as a signal, and appear. Some ingredient shown in Drawing 2 is explained in detail. Although input matrix 30 is first explained with reference to Drawing 4, since this input matrix 30 is the common design, it is stopped to explain an outline. The left and a right stereo signal are impressed to buffers 90 and 92 of profit 1, respectively. The output from buffers 90 and 92 is supplied to operation widening machine 94 through each resistance, and the output of widening machine 94 is a L+R signal ingredient. The output from buffers 90 and 92 is impressed also to operation widening machine 96 so that it may deduct each other to Mutually, and a L-R signal ingredient is made. Drawing 5 is a detailed circuit diagram of output matrix 52. Since it is the design in which this was also common, it explains briefly. Two inputs from terminals 50 and 82 are applied to Mutually in widening machine 100, and the output from widening machine 100 is widened with widening machine 102, and is transmitted to L output 103. The input from terminals 50 and 82 is supplied also to widening machine 104, and the input from terminal 82 is deducted from the input from terminal 50. The output from widening machine 104 is supplied to widening machine 106, and appears in R output terminal 107. As mentioned above, the input to terminal 50 is a pure L+R signal ingredient. The input signal to input terminal 82 is a thing from adding point 80, the Confrontation delay signal of two from adding point 59 and the number signal of L-R low frequency waves from filter 76 combine this, and the standup has combined the output from the L-R output and noise control device 79 from detector 78. About operation of the present invention, the way of mixing the output from adding point 80 in matrix 52 is very important, and suppose that it is behind explained in full detail in relation to comprehensive operation of the present invention. Two DC converters 70 and 72 are the common designs, and it omits the explanation about these. As mentioned above, these converters 70 and 72 are changed into a direct current signal in response to a direct current signal in response to L+R and a L-R signal, respectively, and supply them to comparator 68. Logarithm / reverse logarithm comparator 68 is shown in Drawing 6. The output from L+R DC converter 70 is impressed to widening machine 108, and the output of widening machine 108 serves as a value equal to the logarithm of input voltage. Similarly, the direct-current output from L-R DC converter 72 is impressed to widening machine 110, and the output of widening machine 110 is the logarithm of input voltage. These two opposite figures are deducted by Mutually in widening machine 112, and the output of widening machine 112 is supplied to reverse logarithm widening machine 114. Although widening machine 114 changes a logarithm input to the true numerical value of the logarithm, this is a ratio of two inputs to widening machines 108 and 110. Therefore, the output from comparator 68 is a negative value, and the absolute value is a ratio to the L-R signal ingredient of the ingredient of a L+R signal ingredient. AGC widening machine 60 is shown in Drawing 7. The output from comparator 68 is impressed to input terminal 116, and is supplied to widening machine 118. The output of widening machine 118 is a value negative to Fauna. The output from widening machine 118 is impressed to one terminal 120 of bridge 122, and widening machine 124 for reversal. The output of widening machine 124 is impressed to terminal 126 of the side opposite to bridge 122. The output from adding point 59 is impressed to input terminal 128 at supply Cut off and two resistance 130 and 132 for partial pressures. The voltage of spot weld with resistance 130 and 132 is impressed to widening machine 134. Since you eventually make it flow through bridge 122 more when the output from widening machine 118 becomes more negative, the voltage level of the spot weld of two resistance 130 and 132 falls, and the value of the signal impressed to widening machine 134 decreases. Therefore, if a L-R signal is weak, the signal impressed to operation widening machine 134 will become weak. Drawing 8 shows standup marginal detector 78. A L-R signal ingredient is impressed to widening machine 142 from input terminal 140, and the output of widening machine 142 is further widened with widening machine 144. The output of widening machine 144 is supplied to diodes 146 and 148. As a result, a direct-current output is obtained from diode 146, and this is impressed to widening machine 156 through resistance 150 connected in series, and 152 and 154. The 1st capacitor 158 is connected between spot weld with resistance 150 and 152, and grounding. The 2nd capacitor 160 is connected between spot weld with resistance 152 and 154, and grounding, and the 3rd capacitor 162 is connected between the input of widening machine 156, and grounding. The effect of these five capacitors 158.160 and 162 is attenuating a small change of a signal continuously. These ingredients "smooth" suitably the signal which passed along resistance 150, and they are arranged so that the signal supplied from resistance 152 "may be smoothed" more greatly. It is made for the signal with which the damping time constant of capacitor 162 is supplied from resistance 154 to have fixed voltage substantially. Between spot weld with resistance 152 and 154, and the input terminal of widening machine 156, multiple connection of 2 sets of diodes is carried out. namely, the 1st Dai -- oared -- 164 is negative signal all impressed to widening machine 156, and prevents the Masanobu item. Although the 2nd group that consists of three diodes 166 passes a positive signal, it acts as Inhibition City of the negative signal. More negatively [ the negative signal from operation widening machine 144 ] (namely, more strongly), when the size of change of a signal and the rate of width are large enough, the bias of diode 164 is overcome and a signal can be impressed to widening machine 156. the negative signal from widening machine 144 -- just -- approaching (that is, an absolute value becomes small) -- in order to overcome the bias of three diodes 166 and to make the input of widening machine 156 produce voltage change, it must be change of comparatively large amplitude and width. That is, this circuit answers a little dully rapid reduction of the amplitude of a L-R signal ingredient for the increase in the amplitude of a L-R signal ingredient more sensitively. As mentioned below, the reason carried out in this way will be more sensitive [ people's feeling of Hearing / to the rapid increase in amplitude ] as direction information, even if the rapid increase in amplitude includes direction information like a rapid reduction. Since the output from widening machine 156 is supplied to one pair of resistance 168 and 170 for partial pressures and the spot weld of these resistance is connected operation widening machine 172, the output of widening machine 172 will be connected with signal strength. The output of widening machine 156 is supplied also to the input of operation widening machine 172 through capacitor 174. About the rate of change (even if it is a rise and descent) of pressure, steeply, the function of capacitor 174 is fully differentiating the signal output from widening machine 156 so that it may make. The output of widening machine 172 is supplied to the pace of transistor 176, and a But flow is carried out. This transistor 176 is To let it work about current control widening machine 178. The input of widening machine 178 has received the L-R signal ingredient from operation widening machine 96 directly. Therefore, since transistor 176 carries out few electrical connections when the signal with sufficient stable amplitude exists, it comes to carry out L-R signal passage of the widening machine 178 on a low level. However, since transistor 176 receives this through capacitor 174 when the rate of change of a L-R signal and the size of change are large enough, widening machine 178 comes to let a L-R signal ingredient pass on a far high level. The output of widening machine 178 is impressed to widening machine 180, and is supplied to adding point 180 of the above-mentioned [ the output ]. In the circuit explained above, Or [ that it is reception-like by the direction of the rapid increase in amplitude that the ear of . human being to whom transistor 176 flows further and widening machines 178 and 180 supply a L-R signal on a higher level only when the amplitude of a signal increases rapidly identifies direction information ], Although man's feeling of Hearing checks a direction, it has susceptibility a little also to a rapid reduction of amplitude. the [ therefore, ] -- that standup marginal detector 78 of 8 figure can be changed a little so that it may answer also to a rapid reduction of amplitude, and such change -- the --A [ 8 ] figure is used. the ingredient corresponding to [ in order to make explanation easy ] the ingredient of some of Drawing 8 -- receiving -- the -- inA [ 8 ] figure, they show that it is an ingredient by the side of modification by giving "a" to the same number. Widening machine 156a of the 8th the A figure has undergone the same output as widening machine 156 of Drawing 8. This output resists [ two partial pressure ] 168a and 170a, and passes capacitor 174a. the -- inA [ 8 ] figure, one pair of steering diodes D10 and D11 are added to positive [ of widening machine 172a ], and a negative input at the terminal, respectively. The spot weld of resistance R10 and R11 for partial pressures of 1 to 1 is connected to the right input terminal of widening machine 172a. Diode D11 is connected to the negative input terminal of widening machine 172a through resistance R12, and the emitter of transistor 176a is connected to the negative input terminal of widening machine 172a through resistance R13. When are constituted in this way and an increase rapid to amplitude or a rapid reduction of the signal from widening machine 156a occurs, the output of widening machine 172a serves as a high level, and it carries out the electrical connection of the transistor 176a more greatly. Therefore, if this composition is used, standup marginal detector 78 will come to answer only the rapid increase in the signal strength of a L-R ingredient also at a rapid reduction of L-R signal strength. The output from widening machine 180 is supplied to adding point 80 through one pair of resistance 181 and 182. A pair of 2nd resistance 183 and 184 is connected in series between spot weld with resistance 181 and 182 the input side of widening machine 178. Furthermore, 5th resistance 185 is connected to spot weld with two resistance 183 and 184. The 1st switch 186 that has two switching elements 186a and 186b is formed, and switch 186 is opened in the position shown in Drawing 8. If switch 186 is pushed down on a closed position, switching element 186a will connect determination temporal logic device 36 to a 12-v power supply. If the 2nd switch 187 that has two switching elements 187a and 187b closes, switching element 187a will also connect determination temporal logic device 36 to a 12-v power supply. Switching element 187b grounds the end of resistance 185, and makes a part of L-R signal which flows into resistance 184 from resistance 183 reveal. If both switches 186 and 187 close, it is clear that determination temporal logic device 36 is connected to a 12-v power supply. Since both switching elements 186b and 187b are also closed, the spot weld with resistance 183 and 184 comes to be directly grounded through element 186b and element 187b. These resistance 181 thru/or 185 and switches 186.187 are noise control devices 79. Therefore, temporal logic device 36 operates to Mastication which closed only switch 186, without making a signal reveal through resistance 183 and 184. When switch 187 is closed and switch 186 is opened, determination temporal logic device 36 is connected to a 12-v power supply, but a part of signal which passes along resistance 183 and 184 is revealed. Finally, when both switches 186 and 187 are closed, the signal which passes along resistance 183 in addition to voltage being supplied to determination temporal logic circuit 36 one time is grounded directly. Since it is the L-R signal ingredient received directly from terminal 46 of input matrix 30, if this signal has very much noise as for this signal, it can remove this noise sharply by what both switches 186 and 187 are pushed on a closed position for (it pushes down). If noise is not on the other hand so troublesome, it can be made to decrease to some extent by closing switch 187 and assuming that switch 186 has been opened. If a great thing does not have noise, it will be lost that the signal which can close switch 186, can open switch 187 and rises by this and along which it passes in parallel with marginal detector 78 is Notification(ed). However, even when this signal is not revealed, note that it is what is comparatively weak as for the L-R signal which makes widening machines 178 and 180 approximately, and does not generate Mostly noise completely. Drawing 9 is a circuit diagram of logic drive output Swigging circuit 38. Switching input terminal 190 receives the signal from determination temporal logic device 36. Circuit 38 also has L input terminal 192 and R input terminal 194. These are connected to output terminals 103 and 107 of output matrix 12. It also has 2nd [ further ] L input terminal 196 and 2nd R input terminal 198, and these are connected to output lines 32 and 34 of input matrix 30. 40 and 42 have shown the above-mentioned L and R output terminal, respectively. Operation of switching device 38 is explained. Logic input 190 is connected to the pace of transistor Q1. The collector is connected to the source of +12 v of emitter voltage of this transistor Q1 in the source of -12-v voltage through resistance again. The collector of transistor Q1 is connected also to the base of the 2nd transistor Q2. The emitter of transistor Q2 is connected to the source of -12-v voltage, and the collector is connected to the source of +12-v voltage. The collector of transistor Q1 is connected to the gate of two electric field young fruit transistors Q5 and Q4, and the collector of transistor Q2 is connected to the gate of the 3rd and 4th field effect transistors Q5 and Q6, respectively. +Since two transistors Q1 and Q2 will be intercepted if a 12-v signal is impressed to switching input terminal 190, -12 v is supplied to the gate of field effect transistors Q3 and Q4, and these also serve as a non-electrical connection. On the other hand, a +12-v input is impressed to the gate of field effect transistors Q5 and Q6, and you make it flow through these. Therefore, in this state, a signal reaches outputs 40 and 42 directly through lines 32 and 34 from input matrix 30. However, if the pace of transistor Q1 will be 0 v, both transistors Q1 and Q2 will flow, As a result, -12 v is impressed to the gate of field effect transistors Q5 and Q6, and, on the other hand, the voltage very near +12 v comes to be impressed to the gate of field effect transistors Q3 and Q4. Since transistors Q3 and Q4 flow by this, the signal supplied to outputs 40 and 42 will be drawn from input terminals 192 and 194 connected to output matrix 52. Now, Drawing 10 is a block diagram which shows the main function of determination temporal logic device 36. The outline of operation of this device 36 is explained with reference to introduction and Drawing 10, and it explains in detail with reference to Drawing 11 below. As mentioned above, the function of logic device 36 is determining whether be what inspects a compound FM stereo signal and it can supply to output terminals 40 and 42 as a signal good enough. If it becomes clear that a signal is strong enough and it is comparatively small, L and R signal will be supplied to outputs 40 and 42 of direct logic drive appearance dregs itching device 38 from input matrix 30. If it determines that a signal is insufficient for supplying directly as a result of logic circuit 36 inspecting FM stereo signal on the other hand, device 38 will operate so that the signal may be made to reach output matrix 52 finally through various ingredients of the present invention. Next, the output of output matrix 52 reaches output terminals 40 and 42 through switching device 38. Switch 200 is connected to the source of 12-v voltage as shown in Drawing 10. This switch 200 is illustrated as a switch which explanation expedient-upper-separated, although combined with switch 186 or any of 187 they are in fact. Or if it closes switch 186 or any of 187 they are for switch 200 as a separation switch, it may be made to interlock so that this switch may also be closed. If this switch 200 is closed, logic device 36 will go into operation. Although it is what carries out the common function in which this switch 200 supplies electric power to various ingredients of device 200, In addition, it is To work also so that a 12-v pulse may be supplied to trigger device 202 and muting signal input 204 may be made to enable by a 12-v input. Trigger device 202 activates temporal logic circuit 206 for about 1.5 seconds, shortly after receiving a 12-v input. Trigger device 202 supplies a signal to D flip-flop 0208, and makes it enable simultaneously. Temporal logic circuit 206 generates the "window" for about 1.5 useless seconds which activates multiplex way distortion level indicator 210 and signal strength indicator 212. A compound signal is supplied to two indicators 210 and 212 through line 213. If a compound signal judges with it being fully low quality any of indicators 210 and 212 they are, indicator 210 or 212 will send a signal to the input of gate 214. If it will be in this state, the clock input impressed to gate 214 can be said to the clock terminal of D flip-flop 208, and D flip-flop 208 will supply an activation signal to the binary device of two To work as time delay actuation devices 216 and 218. Two time delay actuation devices 216 and 218 supply electric power to the two above-mentioned time delay devices 56 and 62 (Drawing 2). The output from D flip-flop 208 lets line 220 pass, and is switching input terminal 190 Sent to of logic drive appearance dregs itching device 38. Two indicators 210 and 212 are activated, and also temporal logic circuit 206 supplies a muting signal to the main tuner through line 222, activates the tuner muting circuit in an inspection period for 1.5 seconds, and makes a sound absorb. Since the muting circuit of the common tuner is publicly known, explanation is omitted. A muting circuit is activated while changing into another office from a certain office, and while changing an office, random noise generates abstract To. Line 224 connected to the existing muting circuit of a tuner supplies an input to muting signal input 204. When this muting signal input 204 is activated, it is made to determine whether it should activate temporal logic circuit 206, should make it operate during 1.5 seconds of the inspection, and should make it follow L and R signal to output matrix 52. as mentioned above, determination temporal logic Den -- an operation of chair 36 will determine whether whenever it changes an office, temporal logic circuit 206 should be activated for 1.5 seconds every, the quality of the signal from a new office should be inspected, and the processing ingredient of the present invention should be operated. Two oscillators 226 and 228 are provided. oscillator 226 -- time delay actuation device 216 -- supplying a pulse to the input of gate 214 -- a hand -- the ingredient of these is made to operate Shedder 228 supplies a drive input to time delay actuation device 218, and operates it. Probably, it will be better to explain operation of the ingredient explained in Drawing 10, before explaining the details of logic circuit 36 with reference to Drawing 11. A power supply will be supplied to the main FM tuner combined with the present invention, and I will assume that the stereo signal has occurred, and will assume that switch 200 is open. In this state, the left and the right stereo signal from a tuner appear in lines 32 and 34 through matrix 30, and are directly supplied to outputs 40 and 42 next. the listener should have the signal improved, the pigeon should wish and it should close switch 200 It is, as for the effect, trigger device 202 continuing during the inspection for 1.5 seconds directly, and activating temporal logic circuit 206. Amplitude change of the compound signal of multiplex way distortion level indicator 210 is A festival(ed) during the inspection for these 1.5 seconds, and it is determined whether sufficient distortion which makes it this to process L and R signal through various ingredients of the present invention exists. Simultaneously, it is determined whether it is so low enough that signal strength indicator 212 inspects signal strength and makes processing of L and R signal natural. (Since it is possible that random noise sufficient in a widening It was signal exists if a signal is quite weak) It is not so high quality as processing of a signal is natural through the ingredient of the versatility [ output ] of the present invention. At least one indicator 210 or 212 should judge [ make / into this / processing ] with those with defective to the degree signal. If it carries out, Indicator 210 of one side or another side or 212 is to the input of gate 214. Gate 214 where sending (gate 214) has already received the pulse from oscillator 226 carries out pulse supply of the activation signal at D flip-flop 208 (D flip-flop 208 is The begging and is already activated by trigger device 202). D flip-flop 208 supplies an activation signal to two time delay actuation devices 216 and 218, and makes two time delay circuits 56 and 62 activate. D flip prop 208 makes the output from output matrix 52 output to output Ruko 40 and 42 through device 38, and makes the output of lines 32 and 34 intercept via input 190 of logic drive appearance dregs itching device 38. During 1.5 seconds of the determination, temporal logic circuit 206 sends a signal through line 222, and activates the muting circuit of a tuner. Whether indicators 210 and 212 will react immediately in the second half of the portion early in the determination period for 1.5 seconds, or this period by the time a sound occurs, or they do not react after all, please note being accompanied by the delay for these 1.5 seconds. On the other hand, although switch 200 has closed and temporal logic circuit 206 is energized, the stereo signal from a tuner considers it as a thing good enough. Temporal logic circuit 206 sends a muting signal to a tuner, and makes the sound between the determination periods for 1.5 seconds still intercept under these states. However, since indicator 210 or neither of 212 sends an activation signal, L and R signal are outputted to output terminals 40 and 42 through lines 32 and 34 in the end of the determination period for 1.5 seconds from input matrix 30. Now, the listener should determine to change an office by FM tuner, closing switch 200 previously. This eventually makes the muting circuit in a tuner generate a muting signal. Since this Trace line 224, and is sent to muting signal input 204 and muting signal input 204 sends a signal to temporal logic circuit 206, the inspection period for 1.5 another seconds comes to be started to the office which will seemingly be new. Note the output from muting signal input 204 answering the end of the muting signal on line 224, and generating. That is, if the office which will seemingly be new is found out first, the muting circuit in a tuner will stop operation. Then, indicators 210 and 212 inspect the signal from a new office as A time at the whole period for 1.5 seconds, and determine whether to be processing Should for a signal. It should determine to listen to the music which arises with L and R stereo signal with which a listener does not open and process switch 200. In this case, when trigger device 202 opens switch 200, it activates temporal logic circuit 206 for 1.5 seconds, and activates the muting circuit of a tuner for these 1.5 seconds. The delay for these 1 or 5 seconds gives temporal separation to generating of The sound between a processing signal and a non-processing signal. Drawing 11 shows the details of Open logic device 36 at the time of determination. Switch 200 is connected to the pace of transistor Q10 via line 230. The collector of transistor QIO is connected to the source of +12 v. Line 230 carries out the side way of the transistor Q10, and supplies a 12-v pulse to inverter 234 via line 232. This sets output 236 of inverter 234 to 0. This zero voltage is impressed to input terminal 238 of NAND gate 240 through resistance R2 and capacitor C1. 242 has shown other input terminals of NAND gate 240. If 12 v is impressed to both input terminals 238 and 242, output 244 of this NAND gate 240 will descend to 0. On the other hand, if which voltage of two input terminals 23B and 240 descends to 0, output 244 will jump to 12 Porto. In this case, since output 236 of inverter 234 descends to 0 rapidly, output 244 goes up to 12 bolt Leper rapidly by descent to 0 of input terminal 238. These 12 Porto is returned to the input of inverter 234 through resistance R1, and comes to hold output 236 on zero voltage. However, please note that input terminal 238 is connected to the source of +12-v voltage through two resistance R2 and R3 for partial pressures, and capacitor Cl is connected to spot weld with resistance R2 and R3. The damping time constant of capacitor C1 makes output 244 of NAND gate 240 become low in 1.5 seconds, and it makes it charged toward a 12-v level at it to sufficient grade to raise output 236 of inverter 234 to a 12-v level. If explanation is related to the block diagram of Drawing 10, ingredients 234 thru/or 244, resistance R1 thru/or R3, and capacitor C1 will form temporal logic circuit 206, and it will give the window for the inspection for 1.5 seconds. Transistor QIO and line 232 are a part of trigger devices 202. Outputting point 236 of inverter 234 supplies the signal to multiplex way distortion level indicator 210, and the signal on line 222 activates the muting circuit in FM tuner. From output 244 of NAND gate 240, the activation signal to signal strength indicator 212 is supplied. Now, signal strength indicator 212 contains To work operation widening machine 250 as a comparator, One input terminal of widening machine 250 is connected to the source of a compound signal from a tuner through line 213, and the terminal of another side is connected to output 244 of NAND gate 240 through resistance R4, and it is grounded through another resistance R5. If output 244 just becomes, this will be supplied to widening machine 250 as reference voltage via two resistance R4 and R5 for partial pressures. If signal strength is comparatively large, the output of NAND gate 254 will be set to 0. However, since a very low signal will be outputted when a signal with Working operation widening machine 250 weak as a comparator is detected, the output of NAND gate 254 becomes high, and a 12-v signal comes to be impressed to one terminal 256 of NAND gate 214. Input terminal 260 of another side of NAND gate 214 is connected to the output of oscillator 226 (that is, oscillator 226 is impressing the right pulse of 12 Porto to terminal 260). The above operation widening machine 250, resistance R4 and R5, and NAND gate 254 are a part of signal strength indicators 212. There is oscillator 226 and it waves, and since it is a Was done design, it omits detailed explanation. Next, multiplex way distortion level indicator 210 is explained. One terminal of operation widening machine 262 is connected to the source of a compound signal through capacitor C2 and line 213. This operation widening machine 262 answers small Rippl in a compound signal which originates in multiplex way distortion. The output of widening machine 262 is impressed to one terminal of To work operation widening machine 264 as a comparator. It is connected to the terminal of another side of comparator 264 through resistance R6 at a +12-v power supply. It is connected to output 236 of inverter 234 through variable resistor R7. If output 236 is set to 0, two resistance R6 and R7 will give a reference voltage level to Working and comparator 264 as resistance for partial pressures. If the output from widening machine 262 reaches a level high enough, comparator 264 will supply a signal to input terminal 256 of NAND gate 214. Probably, NAND gate 214 became clear [ answering for any of two inputs being and generating a pulsating output ] from the above explanation. One of the inputs of these originates in low signal strength, and this is supplied with indicator 212 (it consists of comparator 250 and NANO gate 254). The input of another side is a thing from multiplex way distortion level indicator 210 (it consists of widening machine 262 and comparator 264). Shortly after above K and switch 200 are closed, oscillator 226 supplies fixed pulsating voltage to terminal 260 of NAND gate 214. If NAND gate 214 is activated by indicator 210 or any of 212 they are, it will come to supply a positive pulse to clocking input 266 of D flip-flop 208. Input terminal 268 of D flip-flop 208 is connected to the collector of transistor Q1O. If switch 200 is opened, the voltage of set input 268 will be 12 v, and Q output terminal of D flip-flop 208 will stop at 12 v. Since the switching input of logic drive appearance dregs itching device 38 is not activated, without activating time delay device 216 or 218 even if these 12 v is outputted, a signal is equal to not being impressed after all. However, if switch 200 is closed and transistor QIO is operated, the collector voltage will descend to Mostly 0, and will reduce set human power 268 up to Mostly 0 voltage. To the same voltage as a D connector, i.e., zero voltage, if a positive pulse is supplied to clock input 266, Q output terminal will descend. 0 voltage levels come to be impressed to set inputs 270 and 272 of D flip-flops 274 and 276 by this. D flip-flops 274 and 276 are time delay actuation devices 216 and 218, respectively. The pulse input to D flip-flop 274 is supplied from oscillator 226. Two output lines 278 and 280 of D flip-flop 274 supply the drive signal for 1st time delay circuit 56. The pulse input to D flip-flop 276 is supplied from oscillator 228 of the common design. Two output lines 282 and 284 of D flip-flop 276 supply a drive signal to 2nd time delay device 62. Q output of D flip-flop 208 is supplied also to input terminal 190 of drive appearance dregs itching device 38 through line 220. As this device 38 was explained, L and R outputs 40 and 42 are direct Be led from L from matrix 30, and R input as the voltage on line 220 is 12 v. However, when the voltage of line 220 descends to 0, this acts on switching device 38 and makes an output take out from output matrix 52. As for muting signal input device 204, this NAND gate 290 has the 1st input terminal 292 and 2nd input terminal 294 including NAND gate 290. It is directly connected to switch 200 and terminal 292 receives fixed 12 v. Other input terminals 294 undergo the output from the muting circuit in FM stereo tuner through line 224. Output terminal 296 of NAND gate 290 is connected to the input of inverter 298. Output 300 of inverter 298 is connected to NAND gate 240 of temporal logic circuit 206. Output 296 will be set to 0 if there are two terminals 292 and 294 of NAND gate 292 in +12 v. At this time, since resistance R8 is grounded, output 300 of inverter 298 serves as +12 Porto. By this, NAND gate 240 operates, as mentioned above. Switch 200 shall close, and A container C1 shall be completely charged to 12 v, therefore input terminal 238 shall also be 12 v. A muting circuit assumes that a 12-v signal is sent to terminal 294 by having operated FM tuner and having changed the office. In this case, since both terminals 292 and 294 are +12 v, it does not have influence of what on inverter 298, either. However, when a tuner moves to a new office and a muting circuit stops an operation, Since the voltage of terminal 294 is set to 0, output 296 of NAND gate 290 will be 12 v, therefore output 300 of inverter 298 will be set to 0, and output 244 of NAND gate 240 will be positive 12 v. Since output 236 of inverter 234 is set to 0 by this, temporal logic circuit 206 comes to be activated. Thus, the above-mentioned process of signal strength indicator 212 and multiplex way distortion level indicator 210 is started, and the intensity of a new signal and distortion come to be judged. In order to further explain operation of muting signal input device 204, the power supply to the whole FM tuner is intercepted, and I will assume that switch 200 has closed. If a power supply is supplied to FM tuner, the muting circuit will operate automatically for about 0.5 second. Since the voltage of terminal 294 descends to The end 9 for this 0.5 second 0 and output 296 of NAND gate 290 is pulled up to 12 v, it comes to make temporal logic circuit 206 start FM Suedeo signal inspection period for 1.5 seconds through inverter 298 and NAND gate 240. Finally, the main FM tuner will operate and switch 200 will consider it as a It is silly thing. Here, it is assumed that the listener is wanted to do the side way of the processing ingredient of the present invention, and to hear original L and R stereo signal. Since transistor Q10 serves as a non-electrical connection shortly after opening switch 200, the collector voltage of transistor Q10 rises to 12 v. This serves as a 12-v pulse, is told to inverter 234, and activates temporal logic circuit 206 as mentioned above. As this effect, the muting signal for about 1.5 seconds is only supplied to line 222. Therefore, by the time FM stereo tuner generates a certain sound, the delay for 1.5 seconds will be produced. This temporal segmentation in a processing signal to non-Gem signal Oh is desirable although a certain rapid transient is avoided. I will finish detailed explanation of the device of the present invention above, and will explain comprehensive operation of the present invention based on Drawing 2 again. as mentioned above, the fitting of the present invention was shown in (example -- as --) -- a Suedeo signal is received and it is used with common FM tuner which changes them into the left and the right An audio output signal which can carry out use directly generating FM Suedeo music. However, it is since these lefts and a right stereo signal are reconstructed from L+R and the L-R signal ingredient which were transmitted as pointed out before, The left and the right output signal (namely, L and R signal) which were reconstructed include the defect by the noise resulting from multiplex way distortion and a L-R ingredient which is not desirable. The left and the right input are directly told to lines 32 and 34, and these lines supply these signals to input terminals 196 and 198 of logic drive output switching device 38. Simultaneously, input matrix 30 supplies L+R signal Ingredient to line 44, and supplies a L-R signal ingredient to line 46. The circuit processing ingredient of the present invention goes into operation by closing switch 200 of logic device 36. As mentioned above, this determines whether logic device 36 has enough whether a compound signal is inspected and there is any sufficient signal strength and a low multiplex way distortion. If the state of these both exists, logic device 36 will not act any more, but will continue impressing a +12-v signal to input 190 of logic drive appearance dregs itching device 38. L and R input signal are directly transmitted to outputs 40 and 42 by this. However, if judged with it being inferior in the compound signal, as for logic device 36, a 0-v signal will be supplied to terminal 190 of switching device 38, and output terminals 40 and 42 will be separated from input terminals 196 and 198, These output terminals attach and detach to output terminals 103 and 107 of output matrix 52 instead. Determination temporal logic device 36 activates two time delay actuation devices 216 and 218 (these are D flip-flops 274 and 276), and makes electric power supply to two time delay devices 56 and 62. As outline explanation of the present invention which refers to the block diagram of Drawing 2 described, a L+R signal passes along line 54, time delay device 56, and high pass filter 58. The L+R signal of the frequency range higher than about 3 kHz delayed about 11 milliseconds by this is acquired. The output from high pass filter 58 is supplied to adding point 59. A L+R signal passes also along low pass filter 60, time delay device 62, and high pass filter 64. The frequency range of about 480 Hz thru/or 3 kHz (the output of some of 480 Hz or less is included) delayed about 26 milliseconds by this is obtained. This output is also supplied to adding point 59. as mentioned above, the output from adding point 59 -- a ratio -- when L-R/L+R is small, amplitude control is carried out as the profit of automatic-gain-control widening machine 66 is made low. on the other hand -- a ratio -- when L-R/L+R is large, the profit of widening machine 66 also becomes high suitably. Filter 74 is impressed to the output of widening machine 66 by adding point 80 right through. Since the L-R signal ingredient obtained from output terminal 46 of matrix 30 has filter 76 let it pass, an input including L-R information of 450 Hz or less is supplied to adding point 80. It passes also along L-R signal standup marginal detector 78. When there is no rapid change of sufficient amplitude for a L-R signal ingredient so that he can understand easily from detailed explanation of the above-mentioned standup green detector 78, detector 78 transmits a L-R signal on a low level. Therefore, the range of a L-R signal ingredient is mainly 450 Hz or less, and it is a low level. Since it is impressed by adding point 80 on a low level that there is no Mostly, that the L-R signal ingredient of the number range of low frequency waves produces random noise and multiplex way distortion does not become a cause by which the output of filter 76 invites degradation of the object signal. A L-R signal follows device 79 on a low level, and is supplied to adding point 80. However, if the noise in a L-R ingredient is excessive, this signal can be made to reveal by closing switches 186 and 187 alternatively. Package-ization quite rapid to the amplitude of a L-R signal ingredient rises to a Ah case, and marginal detector 78 flows more greatly than between this change. In the shape shown in Drawing 8, detector 78 induces only the rapid increase in amplitude. the -- in the modification shown inA [ 8 ] figure, detector 78 answers both a rapid increase and reduction, and transmits a L-R signal to adding point 80 on a high level during these rapid increases or reduction. I will investigate how various inputs are mixed by matrix 52 and an output is generated, laying the above thing on heart. FM stereo music is passed, and the sound it can consider that is the same starts being rapid, or I will look at the short-time increment of the music in which the end does not exist. A signal shall be weak enough, or shall fully include multiplex way distortion, and the signal-processing ingredient of the present invention should go into operation. In this case, two delay L+R signals appear in adding point 80, the L-R signal containing the frequency of 450 Hz or less is also supplied a little to adding point 80 on a low level, and several copies of high frequency of a L-R ingredient comes to be supplied on a sharply low level. This mixed signal is supplied to input terminal 82 from adding point 80, is added to a L+R signal, and is outputted from output 40, and is deducted from a L+R signal, and appears in output 42. Although L signal ingredient is outputted from output 40 and considering the frequency of 450 Hz or less R signal ingredient is outputted from output 42 in this state, it will be accompanied by some crossover owing to low frequency wave L-R of a low level. In the frequency of 450 Hz or more, since very few L-R ingredients are added, or since a L-R ingredient is not added at all, 450 Hz or more L and R signal are outputted from L output 40 and R output 42. However, since there is little direction information in a sound in this case, a stereo effect does not have a Almost Lost crack. Since the output from adding point 59 supplies the Ambient ingredient of the delayed redundant sound to L+R, the completeness of a music Suedeo sound is not spoiled. A person will acquire the case where it is a music signal with which a clear music sound from which standup marginal detector 78 detects a "standup edge" is started as a case of being another. In this case, total [ of L-] R signal is impressed to adding point 80. Since this is supplied to matrix 52, output 40 serves as purer L signal, and output 42 serves as a purer signal. In this case, since music includes direction information, people come to identify as that to which the sound newly guided mentally came out of the speaker of one side or another side. As for standup marginal detector 78 which detected now that a rapid change of amplitude passed immediately after people orientated the position of a sound mentally, a L-R signal of 450 Hz or more is decreased sharply. however, the heart of the person who heard the start of the sound of a stereo still continued having a direction impression, and the stereo effect decreased -- as -- I do not consider. Since the noise in the short period of time of short Kako is not extremely conspicuous, the period when, as for the harmful effect of the noise which is not [ in the number of high frequency in the L-R sound to maintain ] desirable, standup marginal detector 78, on the other hand, transmits total [ of L-] R signal strength is eventually made to decrease substantially. Although the above explanation is slightly common and it is rationally thought as explanation of the occurring music phenomenon that it is right, please understand that other effects which were not touched exist in this explanation. However, it is involved, the perfection, i.e., the correctness, of the above explanation, and there is nothing, the perfection of a stereo sound and the direction information on a stereo sound are effectively reproduced by the present invention, and it is checking that the random noise which is not desirable, and Multiple path distortion are removed by Mostly completeness. The device of the present invention is without it deviates from the fundamental instruction. It can be understood easily that various change is possible.

[Brief Description of the Drawings]

Drawing 1 is an outline figure showing the typical way of stereophonic recording, and Drawing 2 is block Diamondrum which shows the main ingredients of the present invention of operation, Drawing 3 is a graph which shows the spectral shape of the filter for the L+R time delay device of the present invention, Drawing 4 is a circuit diagram of an input matrix, Drawing 5 is a circuit diagram of an output matrix, and it is Drawing 6, It is a circuit diagram of a comparator and Drawing 7 is a circuit diagram of an automatic-gain-control widening machine, Drawing 8 is a circuit diagram of a standup detector and a noise control device -- the --A [ 8 ] figure is a circuit diagram of some modifications of a standup marginal detector Drawing 9 is a circuit diagram of a logic drive output switching device, and Drawing 10 is a block diagram of a determination temporal logic device, the -- the [A / 11 / figure and ] --B [ 11 ] figure is a circuit diagram (2 sets [ 1 ]) of the determination temporal logic device of Drawing 10 -- the [ and ] --C [ 11 ] figure -- the -- the [A / 11 / figure and ] -- it is a figure showing a coupling method withB [ 11 ] figure. 10, 12 ... A microphone, 14, 16, 18, 20, 22 ... Sound source, 30 ... input matrix, 36 ... determination temporal logic device, 38 ... physical drive appearance dregs itching device, 40 ... left output, 42 ... right output, 52 ... output matrix, 56 ... the -- The delay device of one, and 58 and 64 ... a high pass filter, 59 and 80 ... an adding point, and 60 and 76 ... a low pass filter and 62 ... the -- the delay device of two, 65, 130, 132, 150, 152, 154, 168, 170, 181, 182, 183, 184, 185, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12 ... Resistance, 66 ... AGC widening machine, 68 ... comparator, 70 ... L+R DC converter, 72 ... L-R DC converter, 74 ... low Q zone prevention filter, 78 ... standup marginal detector, 79 ... a noise control device and 90, 92 ... buffer, 94, 96, 100, 102, 104, 106, 108, 110, 112, 114, 118, 124, 134, 142, 144, 156, 172, 178, 180, 250, 262, 264 ... (operation) Widening machine, 122 ... A bridge, 146 and 148, D10, D11 ... Diode, 158, 160, 162, 164, 166, 174C1, C2 ... Capacitor, 176, Q1, Q2, Q10 ... A transistor, Q3, Q4, Q5, Q6 ... The electrolysis effect transistor, 186, 187, 200 ... A switch, 202 ... Trigger device, 204 ... muting signal input, 206 ... temporal logic circuit, 208, 274, 276 ... D flip-flop, 210 ... Multiplex way distortion level indicator, 212 ... signal strength indicator, 214 ... a gate and 216, 218 ... a time delay device and 226, 228 ... an oscillator and 234, 298 ... an inverter, and 240 and 254, 290 ... NAND gate. FIG, 3 1 KHz FIG, 5 FIG, 6 -ss is carried out and it is 111. J dish 1;''M Sereneu device 0 and Sleeveless city It displays into Successor ilE document (method) 1 ('I□). 111Jl sum 58 years! t!i Petition Application No. [ two ] 99299, name Bj of an invention - When it carries out, it is a skewer (Seki of '1 (system appearance 190 person generation-2, Rohato Tab Lew Carwa 4 representative)).