Confidential communication system

[Detailed Description of the Invention]

[Industrial Application] The present invention relates to an unknown episode device, and relates to the improvement of the selective fading of an unknown episode device which attains secrecy-ization of the contents of communication by replacing especially with voice input and transmitting the vocal parameter, i.e., a spectrum envelope parameter, and sound source information. [Description of the Prior Art] Instead of transmitting voice input as it is, the unknown episode device which represents with the spectrum envelope and sound source information as a vocal parameter, transmits, and attains secrecy-ization of the contents of communication is used abundantly in many use fields reflecting the features -- advanced privacy is obtained fundamentally. In such an unknown episode device, means to attain secrecy-ization of the contents of communication are taken by replacing with voice input the sound source information which indicates microscopic spectrum distribution to be a spectrum envelope parameter which shows the macroscopic spectrum distribution of voice input, and transmitting it. However, as sound source information, the strength of V(Voice, voiced)/UV (Un-Voice, silent) information, a Pitch cycle, and a sound source is usually used. For transmitting such a vocal parameter using radio frequencies, such as shortwave, Low-speed CODEC use was carried out, and also [ like a vocoder ] an employment frequency band is divided into a plurality of subcarrier zones, and the thing of form which transmitted the vocal parameter via each of these subcarrier zones, and coped with the turbulence of the transmission way, etc. is used. [Problem(s) to be Solved by the Invention] A multipass is formed on the transmission way which spreads the conventional unknown episode device mentioned above from the transmitting side to a receiving side via reflection by the ionosphere, As compared with a voice band, the selective fading of sufficiently narrow frequency bandwidth occurs frequently, and multiple null (null) reception by the mutual interference of the multipass propagation wave in such a transmission way occurs. At mobile communications, there is a fault that device employment cannot be performed, in environments other than the employment situation which moved at a speed high-speed [ this null frequency ] and random, relating to a path course difference and a carrier frequency, therefore was limited. It is in the object of the present invention providing the unknown episode device which avoided the influence of phasing by multipass propagation by removing the fault mentioned above, having a frequency diversity means performed in a voice band, and performing unknown episode communication by vocal parameter transmission. [Means for Solving the Problem] An unknown episode device of the present invention comprises: The vocal parameter analysis / synthesizing means which compounds an original sound voice input from a vocal parameter while analyzing voice input and extracting a vocal parameter The vocal parameter / both frequency conversion method which changes this changed frequency domain data into an original sound voice parameter while changing a vocal parameter into predetermined frequency domain data expressed with a line spectrum for every component A frequency diversity means to carry out predetermined frequency domain data expressed with a line spectrum in a voice band by many seriousness exceeding 3. [Example] Next, with reference to drawings, it More in detail about the present invention. Drawing 1 is a block diagram showing the 1st example of the present invention. The high region interception which makes 4 kHz cutoff frequency by LPF(Low Pass Filter) I is supplied to voice input by after [ It was done ] A/D converter 2, What was sampled by an 8-kHz sampling frequency is quantized by the number of bits of 12 A bit, and LSP analysis machine 3, pitch extraction machine 4, and V/UV distinction machine 5 are supplied, respectively. LSP analysis machine 3 makes this an analysis cycle every 100 Hz, i.e., 10mSEC, and it extracts the 10th LPC (Linear Prediction Coding) coefficient of an input, The 10th LSP (Line Spectrum Pairs) frequency is obtained from this LPC coefficient, and while supplying this to frequency converter 7, the short-time average voice electric power for every analysis cycle is supplied to electric power compounder 6. The LSP frequency mentioned above shows the spectrum envelope of the voice input for every analysis cycle, and the frequency is distributed over the range of about 0~4 kHz. The Pitch frequency of an input is extracted with the analysis cycle of 10mSEC, and frequency converter 9 is provided with this, and a V/UV judging machine also extracts voiced / silent information on an input with the analysis cycle of 10mSEC, and pitch extraction machine 4 supplies this to frequency converter 9 and linear transducer 12. Electric power compounder 6 gives inputted nonlinear compression predetermined to average voice electric power for a short time, and provides frequency generator 8 with this as electric power data. The information about Pitch mentioned above, V/UV, and electric power is sound source information, and forms a vocal parameter with spectrum envelope information. Now, frequency converter 7 carries out linear transformation of the occupancy frequency band of the inputted LSP frequency data to the range of 0~4 to 0.2~1 kHz. Frequency generator 8 is changed into the frequency of the range of 0.1~0.2 kHz according to the level of the inputted electric power data. In UV, in V, the inputted Pitch frequency is changed into the frequency up to 0.1 kHz from specific frequency according to the size by zero, frequency converter 9 receiving V/UV information, In this way, all sound source information is changed into the frequency of a 0~1-kHz zone, and is supplied to alignment interpolation machines 10, 11, and 12, respectively. The frequency conversion of the Pitch frequency which frequency converter 9 was provided with V/UV information, and took voiced / silent information into consideration is made to perform in the frequency conversion mentioned above. Alignment interpolation machines 10, 11, and 12 carry out alignment interpolation to 2-kHz timing to the data inputted in this way. Although 8 kHz is basically required for this timing, 2-kHz timing is used with LPF13, 14, 15, and tone generator 16 for the reason mentioned below. LPF13 constituted as a transversal type filter, and 14 and 15 drive with a 2-kHz clock, respectively, It has the Takajo cutoff frequency of 1 kHz, 0.2 kHz, and 0.1 kHz, and supplies the LSP frequency data, power frequency data, and Pitch frequency data which were filtered to multi-tone generator 16. The data of the sound transmitted is changed into the data expressed by multi-tone generator 16 with a plurality of line spectra in the present invention. Drawing 2 is a block diagram showing the portion of multi-tone generator 16 in the example of Drawing 1 in detail. 10th LSP frequency by which frequency conversion of the LSP frequency data provided from LPF13 was carried out, and alignment interpolation was carried out (omega),₁, (omega)₂...... (omega)₁₀It is and power frequency data and Pitch frequency data including V/UV information are supplied to tone generator (1)~(10) 161-1~161-10 of multi-tone generator 16 built-in, (11) 161-11, and (12) 161-12 with the frequency of these ten pieces. Each of these tone genere is constituted including adding machine 1610, shift register 1611, and ROM1612 grade, when the case of tone generator (1)161-1 is made into an example, for example. 1 word is a shift register of 13 A bit (0~8191 step) composition, and ROM1612 is provided with shift register 1611, returning this to the input side and performing addition with an input with adding machine 1610 carrying out the delay output of the input with a 2-kHz clock. Therefore, it inputs (omega).₁With speed which is different according to a value, respectively, it rises up to 0 to 8191 steps, and this standup inclination (omega),₁It will correspond to a value. Each input data is an integer proportional to the frequency value which each data expresses. For example, the integral value expressing 500 Hz is 512 in this example. storing the sine wave data which takes -1.0 by +1.0 and 4096 and in which the address of 0 to 8191 boils ROM1612, respectively, and they take the value of about 1.0 [ +] by 8191 0, for example, and responding to the output of shift register 1611 -- 2-kHz timing -- To continue. Therefore, the output (omega) which occur one after another in this way₁It becomes a sine wave which has the frequency corresponding to a value. Input (omega)₂~ (omega)₁₀And a sine wave output is similarly obtained about each tone generator which considers power frequency data and A bit frequency data as an input, and the output of these 12 Wave's is added with adding machine 162, and is outputted as 2-kHz sampling data. Drawing 3 is a block diagram showing the portion of frequency multiplication-ized machine 17 in the example of Drawing 1 in detail. This frequency multiplication-ized machine is predetermined two or more zones in the output of multi-tone generator 16, i.e., the 2-kHz sampling data distributed over 0~1 kHz, in a voice band, In this example, it tends to be considered as the 8-kHz sampling data which carried out increase number representation to four channels, i.e., 0~1, 1~2, 2~3, and four 3~4-kHz zones, and is going to improve influence of phasing sharply according to the frequency diversity effect by this four-channel transmission. The details are as follows. The block diagram in which Drawing 4 shows the prototype of the frequency multiplication-ized machine of Drawing 3, and Drawing 18 are the main signal frequency spectrum feature figures showing the feature of the frequency spectrum of the main signals of the frequency multiplication-ized machine prototype of Drawing 4. Hereinafter, the frequency multiplication-ized machine prototype shown in Drawing 4 with reference to Drawing 18 is explained in detail. The 8-kHz sampling data etc. which have a spectrum shown in Drawing 18 (S41) inputted from input terminal 4100 It shall have a spectrum of the 0~1-kHz zone containing power frequency data and Pitch frequency data, and this shall be supplied from multi-tone generator 16. Therefore, alignment interpolation machine 10~12 of Drawing 1, LPF13~15, and multi-tone generator 16 assume that each is driven to 8-kHz timing in this case. Now, in Drawing 4, to multiplier 411-1,411-3,411-5, cos (1 kHz), cos (2 kHz), and cos (3 kHz) are supplied, respectively, and multiplication with the 8-kHz sampling data (S41) to input is carried out to it. Drawing 18 (S43) is an example of a multiplication result, and shows the output of multiplier 411-1. Each multiplication result is supplied to adding machine 412-1~3. On the other hand, in multiplier 411-2,411-4,411-6, it is SIN (1 kHz), respectively, SIN(2 kHz) SIN (3 kHz) is supplied and a multiplication-after It was done result is outputted for multiplication with the 8-kHz sampling data (S42) to input to adding machine 412-1,412-2,412-3, respectively. The sampling data (S42) supplied to multiplier 411-2,411-4,411-6 are 8-kHz data which carries out 1 / 2 fundamental-period delay for 1 / 2 delay child 418 about sampling data (S41). When all the signal ingredients of (S41) are real number portions, all the signal ingredients of (S42) turn into an imaginary part. Adding machine 412-1,412-2,412-3 reduces the output of multiplier 411-2,411-4,411-6. As a result, the 8-kHz sampling-data series (S45) whose frequency band of adding machine 412-1 is 1~2 kHz which carried out the 1-kHz Up shift, Adding machine 412-2 outputs the 3~4-kHz 8-kHz sampling-data series to which adding machine 412-3 carried out the 3-kHz Up shift of the frequency band for the 8-kHz sampling-data series which is 2~3 kHz in which the frequency band carried out the 2-kHz Up shift further. Each of these adding machine outputs are filtered by the zone (1~2 kHz, 2~3 kHz, and 3~4 kHz) by BPF(Band Pass Filter)414,415,416 next, respectively, and an unnecessary frequency component is removed. In the case of this example, these [ each / BPF ] use the transversal type filter driven at 8 kHz. Since the output of each these BPF generates the time delay of delta to the timing of an 8-kHz sampling-data input, respectively, Delay circuit 413 of time delay delta is passed for the 8-kHz sampling data of a 0~1-kHz zone, and it is an output, This is sent out to output terminal 4101 via adding machine 417 with the output of each BPF, and the sampling data of 8 kHz of multiplexing frequency-multiplication-ized by Here at each frequency band (0~1, 1~2, 2~3, and 3~4 kHz) are obtained. Of course, in Drawing 4, delay circuit 413 and BPF414,415,416 are fundamentally unnecessary. Now, the frequency multiplication-ized machine prototype mentioned above may change to the thing of quite simple composition by using what is called Tesimate processing that reduces a sampling rate. Drawing 5 is a block diagram showing the composition of a I figured frequency multiplication-ized machine conversion prototype for the simplification of the composition of the frequency multiplication-ized machine prototype of Drawing 4. In this frequency multiplication-ized machine conversion prototype 42, 4-kHz sampling data shall be received in input terminal 4200 instead of 0~1-kHz 8-kHz sampling data as an input. multiplier 421-1 and 421-2 -- respectively -- COS (1 kHz) and SIN (1 kHz) -- these 4-kHz sampling data -- and These 4-kHz sampling data were multiplied by 1 / 2 delay child 429 with the 8-kHz 4-kHz sampling data which carry out 1 / 2 fundamental-period delay, and also after-addition Decimator 423-1 is supplied with adding machine 422-1. Decimator 423-2 is provided with 4-kHz sampling data as it is, These two Decimator perform Decimator which samples and outputs an input at 2 kHz, the output of Decimator 423-1 is supplied to BPF424,425, and the output of Decimator 423-2 is supplied to LPF426 and BPF427. Drawing 6 is a main signal frequency spectral-characteristics figure showing the feature of the frequency spectrum of the main signals of the frequency multiplication-ized machine conversion prototype of Drawing 5. Explanation of Drawing 5 is continued, referring to Drawing 6 below. In Drawing 6, a spectrum (S1) has the information about the Pitch frequency which includes the 10th LSP frequency, electric power, and V/UV information in the frequency range of 0~1 kHz, and the maximum maximal level is an analog spectrum of L. It is the spectrum (S2) which sampled this spectrum (S1) by a 4-kHz sampling frequency, and also having multiplied COS (1 kHz) with the spectrum (S2) can express by a spectrum (S3). On the other hand, the spectrum which carries out 1 / 2 fundamental-period delay of the spectrum (S1) is an imaginary number ingredient to which it corresponds at the time of assuming Drawing 6 (S2) to be a real number ingredient as well as the case of Drawing 18 (S42). What multiplied SIN (1 kHz) for this ingredient is a spectrum shown in Drawing 6 (S4). the 1-kHz frequency which expressed the arrow discretely in a spectrum (S3) and (S4) -- all dotted lines express the spectral series which makes 1 kHz fundamental frequency and is generated by Rebirth based on abnormal conditions, and the cuff phenomenon. In this spectrum (S3) and (S4), that level is reduced to L/2. Now, a spectrum (S5) generates a spectrum (S3) by adding (S4). A level restores this spectrum to L. This spectrum (S5) is an output of adding machine 422-1, by Decimator 423-1, is given Decimator by 2-kHz sampling, and is outputted as a spectrum (S6). On the other hand, a spectrum (S2) is supplied to Decimator 423-2, and it is outputted to it as a spectrum (S8) as a result of Decimator. BPF424 and BPR425 receive the input of a spectrum (S6), respectively, and the former is 1~2 kHz, The latter performs 3~4-kHz zone filtering, the output is supplied to adding machine 422-2, as a result, selection extraction of a spectrum (S6) is performed, and a spectrum (S7) is obtained, and it is supplied to adding machine 428. On the other hand, LPF426 and BPF427 receive a spectrum (S8), respectively, and the former is 0~1 kHz, The latter performs 2~3-kHz zone filtering, a spectrum (S9) is obtained by selection extraction of the spectrum (S8) added with adding machine 428, and the output is supplied to adding machine 428. Adding machine 428 adds a spectrum (S7), and obtains a spectrum (10) (S9). Although this spectrum (10) is outputted as an analog output via D/A converter 18 and LPF19 as 8-kHz sampling data, this is a spectrum (S11). However, the composition of the frequency multiplication-ized machine conversion prototype of Drawing 5 mentioned above can also attain simplification further. Although the portions surrounded by a dotted line among the contents which it shows in Drawing 5 are a spectrum (S6) shown in Drawing 6, and a portion which generates (S8), simplification can be attained sharply as follows. Drawing 7 is a block diagram of the frequency multiplication-ized machine conversion prototype which shows the simplification of composition in Drawing 5 of I figured, The portion shown by the dotted line of Drawing 5 is replaced by the circuit containing numerals reversal machine 431, change machine 432, and flip-flop circuit 433, and since other portions are completely the same as that of the composition of Drawing 5, the detailed explanation about the portion same in these is omitted. Now, in the frequency multiplication-ized machine conversion prototype of the composition of Drawing 5, an input is 4-kHz sampling data, and it is Oh. Now, it is considered as the series which Decimator(ed) the 8-kHz sampling data which show these 4-kHz sampling data by (1) formula to one half. ...x_-3,x_-2,x_-1,x₀,x₁,x₂,x₃,x₄,x₅,x₆,x₇...(1) 4-kHz sampling data are shown by (2) types. ...x_-2,x₀,x₂,x₄,x₆,x₈......(2) Now, the series of COS (1 kHz) is shown by following the (3) type. ...,0,1,0,-1,0,1 ......(3) (2) The multiplication results of the series of a formula and the series of (3) types are ..., 0, and x.₀,0,-x₄,0,x₈......(4) On the other hand, the 4-kHz sampling-data series for which only 1/2 fundamental period was delayed in 4-kHz sampling data is shown by following the (5) type. ...x_-3,x_-1,x₁,x₃,x₅,x₇......(5) The series of SIN (1 Hz) is shown by following the (6) type. ...,-1,0,1,0,-1,0, ......(6) (5) The multiplication result of the series of a formula and the series of (6) types is shown by following the (7) type. ...x_-3,0,x₁,0,-x₅,0, ......(7) Therefore, following the (8) type can show if the series of x(input data) COS(1 kHz)+(data delayed 1/2 in input data) xSIN (1 Hz) is considered. ...,-x_-3,x₀,x₁,-x₄,-x₅,x₈......(8) (8) If the series of a formula is Decimate(ed) to 2 kHz, the series shown by following the (9) formula will be acquired. ...,-x_-4,x₀,-x₄,x₈,-x₁₂......(9) The 2-kHz sampling data inputted from input terminal 4300 in Drawing 7 are directly supplied to change machine 432 via numerals reversal machine 431. By Q terminal output of flip-flop circuit 433, change machine 432 changes an input by turns, and outputs it. Flip-flop circuit 433 returns, and considers the terminal output of D type flip-flop circuit as an input, a 1-kHz pulse is outputted to clock terminal CP from Q terminal output in response to 2 kHz, and the spectrum (S6) shown in Drawing 6 as the output is obtained by changing change machine 432 now. On the other hand, the 2-kHz sampling data with which direct LPF426 and BPF427 are provided are supplied as a spectrum (S8), and the completely same output as the case of Drawing 5 is taken out from output terminal 4301. Each of alignment interpolation machines shown in Drawing 1 from such a background, LPF(s), and multi-tone generators is replaced with 8 kHz, 2 kHz is made into a sampling and drive frequency, and simplification of large composition and reduction of the amount of operations are achieved by this. Now, frequency multiplication-ized machine conversion prototype 43 shown in Drawing 7 is specifically realizable in a still simpler form with frequency multiplication-ized machine 17 mentioned above. It will be as follows if the reason is explained in full detail. LPF(s) in Drawing 7 can also be considered to be one sort of BPF(s), and consider the case where four BPF(s) containing this LPF are constituted as a transversal type filter. Drawing 8 is a circuit diagram showing the fundamental composition of BPF in Drawing 7. BPF44 is a transversal type filter in which BPF45 targets 1~2 kHz a bus band for 3~4 kHz as a bus band, BPF44 has n unit delay element 441-1~441-n, multiplier 442-1~442- (n-1), and adding machines 443, and is constituted. r₀~r_o-1It is the number of Is filter systems. BPF45 has n unit delay element 451-1~451-n, multiplier 452-1~452- (n-1), and adding machines 453, and is constituted. S₀~S_(o-1)It is the number of Is filter systems. Although the output of these BPF44 and BPF45 is further added and outputted with adding machine 444, the function of these two BPF(s) can be easily represented by one BPF, and can be realized as BPF46. It is a transversal type filter of n stage, and this BPF46 is provided with n unit delay element 461-1~461-n, multiplier 462-1~462- (n-1), and adding machines 463, and is constituted. The filter factor in this case is t.₀~t_o-1Come out, and it is and is t.₁=r₁+s₁(They are i= 0, 1, 2, and ... (n-1).) In this way, BPF which it has as a bus band can constitute 1~2 kHz and 3~4 kHz from one transversal filter. LPF (0~1 kHz and 2~3 kHz) and BPF can also constitute this from one transversal type filter easily. In this way, four BPF(s) of Drawing 7 become realizable with two transversal type filters. Now, it is y now about the 2-kHz sampling data to input.₀,y₁,y₂It is t about the filter factor in the direction of a filter between two pass bands [ two ] BPF which were made into ...... and mentioned above (1~2, 3~4 kHz).₀,t₁,......t_o-1It carries out and is u about the coefficient of a filter (0~1, 2~3 kHz).₀,u₁,......u_o-1When it comes out and expresses, these filter factors are generally shown by Drawing 9 a. Drawing 9 is a frequency multiplication-ized processing explanatory view for explaining the contents of processing in the frequency multiplication-ized machine conversion prototype of Drawing 7. It is phase 0 sampling data (b) about the state in the timing which has 2-kHz sampling data now.¹It comes out, for example, is y.₇......y₂,0,0,0,y₁,0,0,0,y₀It shall be expressed with 0, 0, and 0. In this case, since a filter is driven at 8 kHz, naturally the 3-sample point between 2-kHz sampling data is set to 0. The output of this place is outputted (b).²The portion which carried out, was shown and pulled the underline is phase 0 sampling data (b), respectively.¹It is alike and is used as a receiving filter factor. Next, at phase 1 which he has already followed 1 sample, it is phase 1 sampling data (c).¹And an output (c)²It is alike, therefore filter ON and an output are expressed, and it is the following (d), for example, phase 3 sampling data.¹And an output (d)²Phase 4 sampling data (e)¹And an output (e)²It is phase 7 sampling data (f), outputting and inputting etc.¹And an output (f)²It comes out, 1-cycle Sentence of an 8-kHz sampling is completed, and the following cycle is phase 0 sampling data (g) again.¹And an output (g)²It will be continued by carrying out. If the multiplexing processing mentioned above is summarized, it will cut as follows. Namely, 2-kHz sampling data were prepared, and also it is obtained by sampling this with the sampling period of 8 kHz (b).¹~(b)⁷I hear that it becomes the basic processing to add what multiplied the filter factor of m pieces shown in a parenthesis to each of 8 sets of inputs. However, these filter factors are determined by combination addition of the filter factor of BPF and PBF (0~1, 2~3 kHz) as shown by Katsuko of Drawing 9 (1~2, 3~4 kHz), and they generally need an 8 set m piece, i.e., an 8-m piece, filter factor. m pieces are determined here as integer portions of (n+3) / 4, n is the number of A tap of BPF and 3 added to the number of division based on 4 sampling 2-kHz sampling data at 8 kHz and n is the A tap fraction maximum of the sampling unit by 8 kHz, for example, it is set to m= 8 when using BPF of n= 31. Come back explanation is again continued to Drawing 3. Drawing 3 is the composition of the frequency multiplication-ized machine which realizes processing mentioned above, and performs the operation fundamentally shown in Drawing 9 by the register of the stage (m-1), and an 8 set m piece filter factor memory. Unit delay element 171-1~171- (m-1) forms the shift register of the stage (m-1) which operates at 2 kHz, and data selector 173 is provided with 2-kHz sampling data in the state where it was shifted one after another to direct and 2-kHz timing. Performing data reset to 8-kHz timing, it reads M A bit counted at high speed, and M A bit counter 172-1 supplies it to data selector 173. N is the number of bits which can express m mentioned above, and, in the case of m= 8, is set to M= 3 here. Selecting the input from the output terminal of the shift register circuit determined corresponding to M A bit which counts for every cycle of 8 kHz in this way, and is read, it obtains every 8-set m inputs repeated from phase 0 to phase 7, and data selector 173 supplies this to multiplier 174. Multiplier 174 is provided with the 8-m filter factor which should be multiplied from ROM78 to the input mentioned above. Read-out of the filter factor from ROM178, It is carried out, determining the address of the 8-m filter factor which sets up even one phases 0-7 of an input after another at 3 A bit counter 179 which operates at 8 kHz, and is stored in ROM178 by the same M A bit counter 172-2 as M A bit counter 172-1. In multiplier 174, multiplication with an input and a filter factor is performed and shift register 176 is supplied via adding machine 175. Accumulating the filter factor multiplication result of the input from phase 0 to phase 7 in the form with which adding machine 175 is provided for every phase, it supplies this to Shyat register 177 for every 8-kHz periodic Sentence, and shift register 176 acts as Masachika as 8-kHz sampling data. Thus, frequency multiplication-ization is carried out easily. Come back explanation is again continued to Drawing 1. After the 8-kHz sampling data outputted from frequency multiplication-ized machine 17 remove a high region frequency component unnecessary at LPF19 after being analog-ized by D/A converter 18, they are changed into the transmitted signal of a predetermined abnormal-conditions form, and they are frequency-multiplication-ization-transmitted to a receiving side via a transmission way. In a receiving side, after restoring to this, took out 0~4 kHz as baseband, and the ingredient of four channels via LPF20, and this was digitized with an 8-kHz sampling rate by A/D converter 21, and also electric power spectrum analyzer 22 is supplied. Drawing 10 is a block diagram showing the portions of electric power spectrum analyzer 22 in the example of Drawing 1, peak Pittsburgh 23, and combiner 24 in detail. The 8-kHz sampling data inputted from A/D converter 21 are supplied to window processing machine 221. Window processing machine 221 carried out window processing of the input data every 32mSEC with the predetermined window function, and also it continues this with the cycle of 100 Hz, and supplies it to 256-point Fourier transform machine 223. A humming function is used as a window function mentioned above, and it is supplied from 256-point (32mSEC) humming coefficient generator 222 as data of 256 points of 8 kHz and 32mSEC. 256-point Fourier transform machine 223 will perform the 256-point Fourier transform of an input, and will send out that data to electric power calculation machine 224, and, as for the number of electric power calculation, it will be one half of 128 points in this case to perform electric power calculation. The output of electric power calculation machine 224 is supplied to maximum search machine 231 and peak picking machine 232 of peak Pittsburgh. An output of this 128-point electric power calculation machine 224 is electric power data of four channels which has a peak value of 12 in 1 kHz, respectively. A peak value of 12 corresponds to electric power as the 10th LSP frequency showing a spectrum envelope, and sound source-like news, and Pitch frequency. Four channels are multiplexed frequency 0~1, 1~2, 2~3, and a 3~4-kHz frequency band. Maximum search machine 231 searches the maximum of the output received from electric power calculation machine 224, and generates the peak picking level setpoint signal in peak picking machine 232 based on the level. Peak picking machine 232 sends out data concerning a Line four-channel intermediary [ 48 piece ] peak value in peak picking to the peak value of 12 contained in a 1-kHz zone to combiner 24 with this peak picking level setpoint signal. Combiner 24 undergoes the output of peak Pittsburgh 23 by the electric power adding machine of 32 channels, and electric power adding machine (1)241-1~electric power adding machine (32) 241-32. This 32 number is equivalent to 1/4 of the total [ output ] 128 sample numbers of electric power calculation machine 224, A corresponding phase adds collectively the electric power data of 128 points from zero point to 127 points distributed over four electric power adding machines Sentence every 4 point, For example, electric power adding machine 241-1 adds and outputs the electric power data in 0, 32, 64, and the point [ 96th ] frequency point as four of the phase point of four channels. In this way, 12 electric power data outputted from power amplifier 241-1~241-32 is supplied to peak frequency detector 242, and determines the peak frequency of 12 pieces from which electric power serves as a peak using interpolation processing etc. The peak frequency of 12 pieces obtained in this way serves as a reproduction output of multi-tone generator 16 of the transmitting side. Thus, the influence of phasing should be sharply oppressed by Sending(ing) and receiving a voice spectrum via a frequency diversity means to transmit a vocal parameter, by the multiplexed frequency band. Explanation by the side of operation of Come back 1st is again continued to Drawing 1. Among the outputs of combiner 24, the data about Pitch frequency is supplied to alignment interpolation machine 26 again at alignment interpolation machine 27, respectively, and, as for ten data about LSP frequency, the data about power frequency performs alignment interpolation processing in alignment interpolation machine 25. The output of alignment interpolation machine 25 is supplied to LSP filter 38 as a filter factor, after being restored to the 10th original LSP frequency with a frequency [ 10th / 0~4 kHz / from ] of 0.2~1 kHz by frequency converter 28. LSP filters 38 are all the pole type voice synthesis filters which make a filter factor alpha parameter produced by changing LSP frequency, K parameter, etc. The LSP frequency outputted from frequency converter 28 is supplied also to normalization Forecast remaining difference electric power generator 31, generates the Forecast remaining difference electric power of a normalization level, and supplies it to amplitude information generator 34. The output of alignment interpolation machine 26 was supplied to electric power information generator 29, and changed the electric power data as frequency domain data into the electric power information as an electric power level, and also it supplies this to electric power expander 32. Electric power expander 32 cancels the nonlinear processing added by electric power compounder 6 to the inputted electric power information, and supplies this to amplitude information generator 34. Amplitude information generator 34 corrects the level of normalization Forecast remaining difference electric power to an actual level corresponding to the electric power information supplied in this way, and uses it for profit adjustment of variable gain amplifier 37 as amplitude information. now After the Pitch frequency of the 0~0.1-kHz zone which alignment interpolation machine 27 outputs is changed into the frequency of even if frequency converter 30 is supplied, be supplied to pitch pulse train generator 35, generate the pitch pulse train of the frequency corresponding to Pitch frequency, and pass change machine 35. Variable gain amplifier 37 is supplied. Alignment interpolation machine 27 supplies again the V/UV information included with the information about Pitch frequency to frequency converter 30 and pitch pulse train generator 33, and it supplies it also to change machine 35 while it controls the operation, The change of change machine 35 is controlled to replace with the output of pitch pulse train generator 33, and to be able to provide variable gain amplifier 37 with the output of noise generator 36, when V/UV information specifies UV. LSP filter 38 is provided with the output of variable gain amplifier 37 as sound source information, it drives this, compounds digital voice input, and is supplied to D/A converter 39. D/A converter 39 changed the input into the analog signal, and removed the output and the unnecessary high frequency ingredient to LPF40, and also it is taken as voice input. Next, the 2nd example of the present invention is described. Drawing 11 is a block diagram showing the 2nd example of the present invention. Since only frequency multiplication-ized machine 47 of others is [ this 2nd example ] completely the same unlike the 1st example, the detailed explanation about these same contents is omitted. The block diagram showing the portion of frequency multiplication-ized machine [ in / in Drawing 12 / the 2nd example of Drawing 11 ] 47 in detail and Drawing 13 are main signal frequency spectral-characteristics figures showing the feature of the frequency spectrum of the main signals of the frequency multiplication-ized machine of Drawing 12. Although the spectrum of voice input is shown by the spectrum (S1), a signal with the spectrum (S21a) as the 8-kHz sampling data is given as an input of frequency multiplication-ized machine 47. This input is an output of multi-tone generator 16 which includes the 10th LSP frequency, electric power, and V/UV information in a 0~1-kHz zone. After multiplier 471,472 of frequency multiplication-ized machine 47 multiplies COS (1 kHz) and -SIN (1 kHz) in response to the input of the spectrum (S21b) which carried out 1 / 2 fundamental-period delay of a spectrum (S21a) and the (S21a), respectively, it is outputted to adding machine 473. The output spectrum of multipliers 471 and 472 is expressed as a spectrum (S22) and (S23), respectively. Therefore, the output of adding machine 473 serves as a spectrum (S24) which has the spectrum distribution of the sum of these two spectra. The spectrum (S21) as 8 more kHz sampling data is also added to adding machine 473, and the spectrum of the output is expressed as a spectrum (S25). Next, the output which multiplies -SIN (2 kHz) to what carried out COS (2 kHz) in multiplier 474, and carried out 1 / 2 fundamental-period delay of (S25) in multiplier 475, and has a spectrum (S26) and a spectrum (S27) in it, respectively is obtained to an input with this spectrum (S25). The thing adding both these outputs serves as a spectrum (S28), and also the spectrum of 8 kHz of output sampling data to which the spectrum (S25) which adding machine 473 outputs to this was added turns into a spectrum (S29). A 0~4-kHz zone is used as an analog output among this spectrum. Thus, multiplexing of a frequency band can be attained according to other abnormal-conditions forms. Drawing 14 is a block diagram showing the 3rd example of the present invention. This 3rd example operates at 2 kHz, and provides D/A converter 18 with the alignment interpolation machine in an example, LPF, and the multi-tone generator of Drawing 1, It is obtained by Decimate(ing) the 8-kHz sampling data which multi-tone generator 16 outputs fundamentally by a 2-kHz sampling frequency by Decimator 48. As the dotted line arrow of Drawing 14 shows, alignment interpolation machine 10~12, LPF13~15, and multi-tone generator 16 are operated at 8 kHz in this case. Drawing 15 is a Decimator processing explanatory view for explaining the effect of Decimator 48 in the 3rd example shown in Drawing 14. The 8-kHz sampling data inputted into Decimator 48 can apply the decimation by a 2-kHz sampling frequency, and output the 2-kHz sampling data shown in Drawing 15 according to Repeat and a cuff phenomenon. However, it is clear that such an output can be easily replaced in equivalent by operating each alignment interpolation machine, LPF, a multi-ton generator, etc. which were mentioned above at 2 kHz, Therefore, D/A converter 18 can be provided with the multiplexed signals which have a spectrum of P by composition of the solid line shown in Drawing 14. Drawing 16 is a block diagram showing the 4th example of the present invention. Since only the point of other portions of using frequency multiplication-ized multi-tone generator 49 with which the 4th example serves as a frequency multiplication-ized machine is completely the same unlike the 1st example, the detailed explanation about these same contents is omitted. Drawing 17 is a block diagram showing in detail the portion of frequency multiplication-ized multi-tone generator 49 of the 4th example shown in Drawing 16. LPF13, 14, the LSP frequency data outputted from 15, power frequency data, and Pitch frequency data are supplied to multi-tone generator 49. Each of these frequency data is supplied to direct multi-tone generator 491 again at multi-tone generators 494,496 and 498 via adding machine 493-1~493-3,495-1~495-3 and 497-1~497-3 grade, respectively. Each of these adding machines perform addition with the digital data and input each frequency data equivalent to 1 kHz, 2 kHz, and 3 kHz, respectively, By supplying the result to a multi-tone generator, a frequency shift (1 kHz, 2 kHz, and 3 kHz) is given to an input, respectively. Now, multi-tone generator 491~498 is all a thing of the almost same contents of composition as multi-tone generator 16 of Drawing 1, and it drives it by 8 kHz. 10th 0.2~1-kHz LSP frequency data in which multi-tone generator 491 is distributed over a 0~1-kHz frequency band, The 8-kHz sampling data of Pitch frequency data including 0.1~0.2 kHz power frequency data and 0~0.1-kHz V/UV information are outputted, and this is supplied to adding machine 492. Multi-tone generator 494 is a 1~2-kHz frequency band, Multi-tone generator 496 generates the output of the 12 same waves as multi-tone generator 491 in the state where it shifted to a 3~4-kHz frequency band, and supplies a 2~3-kHz frequency band and multi-tone generator 498 to adding machine 492. Adding machine 492 adds the output of the multi-tone generator of these 4 wave-band regions, and supplies it to D/A converter 18 as frequency multiplication-ized 8-kHz sampling data. The present invention has the basic feature at a point of having a frequency diversity means to carry out in a voice band, and performing unknown episode transmission and reception by a vocal parameter. the [ which was mentioned above ] -- various modification of the 1~4th example is also considered. the [ for example, / which was mentioned above ] -- although it is considered as a frequency diversity means to use the frequency band which quadrisected the voice band in the 1~4th example, it is clear that this number's of division it can set up arbitrarily in consideration of a phasing deterrent effect etc. It is also clear the frequency band about the spectrum envelope and sound source information which should be occupied within these frequency bands, and that it can set up arbitrarily, and these can all be carried out easily, without spoiling the main point of the present invention. [Effect of the Invention] As explained above, in the present invention, it should have a frequency diversity means in an unknown episode device which performs unknown episode communication via transmission of a vocal parameter. Therefore, it is effective in an unknown episode device which oppressed phasing sharply being realizable.

[Brief Description of the Drawings]

In Drawings 2, Drawing 1 is a block diagram showing the 1st example of the present invention, and a block diagram showing the portion of multi-tone generator 16 in the 1st example of Drawing 1 in detail, Drawing 3 is a block diagram showing the portion of frequency multiplication-ized machine 17 in the 1st example of Drawing 1 in detail, Drawings 5 are a block diagram in which Drawing 4 shows the prototype of the frequency multiplication-ized machine of Drawing 3, and a block diagram showing the composition of a I figured frequency multiplication-ized machine conversion prototype for the simplification of the composition of the frequency multiplication-ized machine prototype of Drawing 4, Drawing 6 is a main signal frequency spectral-characteristics figure showing the feature of the frequency spectrum of the main signals of the frequency multiplication-ized machine conversion prototype of Drawing 5, Drawing 7 is a block diagram of the frequency multiplication-ized machine conversion prototype which shows the simplification of composition in Drawing 5 of I figured, Drawing 8 is a circuit diagram showing the fundamental composition of BPF (band bus filter) in Drawing 7, Drawing 9 is a frequency multiplication-ized processing explanatory view for explaining the contents of processing in the frequency multiplication-ized machine conversion prototype of Drawing 7, Drawing 10 is a block diagram showing the portions of electric power spectrum analyzer 22 in the 1st example of Drawing 1, peak Pittsburgh 23, and combiner 24 in detail, It is a block diagram showing the portion of frequency multiplication-ized machine [ in / Drawing 11 can be set in the block diagram of the 2nd example of the present invention, and / in Drawing 12 / the 2nd example of Drawing 11 ] 47 in detail. Drawing 13 is a main signal frequency spectral-characteristics figure showing the feature of the frequency spectrum of the main signals of the frequency multiplication-ized machine of Drawing 12, In the block diagram and Drawing 15 showing the 3rd example of the present invention, Drawing 14 is Decimator processing explanatory views for explaining the effect of Decimator 48 in the 3rd example of Drawing 14, Drawings 17 are a block diagram in which Drawing 16 shows the 4th example of the present invention, and a block diagram showing the portion of frequency multiplication-ized multi-tone generator 49 of the 4th example of Drawing 16 in detail, Drawing 18 is The. It is a main signal frequency spectral-characteristics figure showing the feature of the frequency spectrum of the main signals of the frequency multiplication-ized machine prototype shown in a figure. 1 ...... LPF, 2 ...... An A/D converter, 3 ...... A LSP analysis machine, 4 ...... A pitch extraction machine, 5 ...... A V/UV distinction machine, 6 ...... An electric power compounder, 7 ...... A frequency converter, 8 ...... A frequency generator, 9 ...... A frequency converter, 10~12 ...... An alignment interpolation machine, 13~15 ...... LPF, 16 ...... A multi-tone generator, 17 ...... A frequency multiplication-ized machine, 18 ...... A D/A converter, 19, 20 ...... LPF, 21 ...... An A/D converter, 22 ...... An electric power spectrum analyzer, 23 ...... ... A -- Kupitzka and 24 ...... A combiner, 25~27 ...... An alignment interpolation machine, 28 ...... A frequency converter, 29 ...... An electric power information generator, 30 ...... A frequency converter, 31 ...... A normalization Forecast remaining difference electric power generator, 32 [ ...... A change machine, 36 / ...... A noise generator, 37 / ...... A variable gain amplifier, 38 / ...... LSP filter, ] ...... An electric power expander, 33 ...... A pitch pulse train generator, 34 ...... An amplitude information generator, 35 39 ...... D/A converter, 40 ...... LPF, 47 ...... frequency multiplication-ized machine, 48 ...... Decimator, 49 ...... frequency multiplication-ized multi-tone generator.