Acoustic-adjusting device

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to an acoustic adjustment device such as a mobile phone including PHS.

【0002】

[Conventional technology]

Pagers (pagers) wireless calls allow people who are out or away from their desks to carry a small receiver and wirelessly transmit ringing sounds, vibrations, and messages to notify them that they need to be contacted.

【0003】

Conventionally, in a mobile phone, when an incoming signal is received from a base station, a ringing tone of the device sounds to notify the user that the incoming signal has been received.

【0004】

In addition, an in-vehicle hands-free kit is generally provided as an option for an automobile for a mobile phone. When the received signal from the base station side is received, a ringing tone sounds from the in-vehicle speaker to notify the user that the signal has been received. The user presses the receive button on the device to enter a call state. At this time, the user can talk with the other party by using the in-vehicle speaker and the in-vehicle microphone without directly holding the mobile phone or the like.

【0005】

[Problems to be Solved by the Invention]

However, in such a conventional mobile phone, a ringing tone may suddenly start to sound without considering the intention of the user, which may cause annoyance to the surrounding people / situations. As a countermeasure, the user puts the mobile phone in the standby state by adjusting the ringing tone (or the vibrator mode) in advance. However, the user is constantly moving, and the surrounding conditions are constantly changing. The user has to adjust the telephone each time, and even if there is a function in reality, it is a function that is not actually used.

【0006】

Further, since the mobile phone receives an incoming call regardless of the surrounding conditions in which the user is present, when the ambient noise in which the user is present is loud, the voice of the other party is muted by the ambient noise and becomes extremely difficult to hear. Therefore, the user adjusts the volume to a level that can counter the ambient noise each time.

【0007】

Furthermore, even when using an in-vehicle hands-free kit, it is necessary to adjust the volume according to the ambient noise level inside the vehicle, and if the work is performed while driving, it poses a big problem in safe driving. It will be.

【0008】

INDUSTRIAL APPLICABILITY According to the present invention, the ringing volume can be specified according to the volume of ambient noise (noise), an incoming call can be received without causing trouble to surrounding people, and acoustic adjustment capable of transmitting only a clear voice to the other party. The purpose is to provide the device.

【0009】

[Means for solving problems]

The sound adjusting device according to the present invention is set by a noise signal detecting means for detecting ambient noise, a volume setting means for setting a ringing sound level based on the noise signal detected by the noise signal detecting means, and a volume setting means. It is configured to include a ringing means that rings at the ringing sound level.

【0010】

The sound adjusting device according to the present invention includes a noise signal detecting means for detecting ambient noise, a volume setting means for setting the volume of the handset of the mobile terminal based on the noise signal detected by the noise signal detecting means, and a volume setting. It is configured to include a volume adjusting means for adjusting the volume of the handset at a volume set by the means.

【0011】

The sound adjusting device according to the present invention includes a noise signal detecting means for detecting the amount of ambient noise at regular time intervals or a predetermined level change by an in-vehicle microphone during a call, and a noise signal detected by the noise signal detecting means. A volume setting means for setting the volume of the vehicle-mounted external speaker based on the above, and a volume adjusting means for adjusting the volume of the vehicle-mounted external speaker with the volume set by the volume setting means at regular time intervals or at predetermined level changes. Be prepared and configured.

【0012】

Even if the acoustic adjusting device according to the present invention is provided with a transmitting volume measuring means for measuring the transmitting volume and is configured to control the output of the handset based on the volume measured by the transmitting volume measuring means. Good.

【0013】

The acoustic adjustment device according to the present invention includes a pattern measuring means for measuring a characteristic pattern of ambient noise, an antiphase pattern generating means for generating a pattern opposite to the ambient noise measured by the pattern measuring means, and an antiphase pattern generating means. It may be configured to include audio signal processing means for reducing ambient noise by synthesizing the output and input sound of the means.

【0014】

The sound adjusting device according to the present invention has a first audio signal detecting means for detecting an audio signal by an external microphone mounted on a vehicle, and a second audio signal detecting means for detecting an audio signal by a built-in microphone built in a mobile terminal. And the audio signal processing means for calculating the input difference between the output of the first audio signal detecting means and the output of the second audio signal detecting means to reduce the ambient noise. ..

【0015】

The acoustic adjustment device according to the present invention is provided with an audio signal processing means for reducing ambient noise by cutting the combined signal level of the combined signal of the audio signal and ambient noise at a predetermined level and then amplifying the cut level. It may be configured.

【0016】

Further, the sound adjusting device may be used for a mobile terminal capable of transmitting and receiving wireless signals and carrying a call.

【0017】

BEST MODE FOR CARRYING OUT THE INVENTION

The acoustic adjustment device according to the present invention can be applied to a digital wireless mobile terminal device such as a mobile phone.

【0018】

FIG. 1 is a diagram showing a configuration of an acoustic adjustment device according to the first embodiment of the present invention, and is an example applied to an automatic ringing acoustic adjustment device in a mobile phone.

【0019】

In FIG. 1, 1 is an acoustic adjustment device, 11 is a control unit that controls the entire device, and the control unit 11 is composed of a CPU and the like, and uses a memory that stores data used for calculation of the acoustic adjustment device. Controls the operation of acoustic adjustment.

【0020】

The control unit 11 is connected to a mobile phone radio 12, a microphone (microphone unit) 13, a ringer unit 14 for ringing a ringer, and a handset 15 equipped with various key buttons and the like.

【0021】

The microphone 13 is a microphone that detects a noise signal around the mobile phone, and for example, an omnidirectional condenser microphone is used.

【0022】

The ringer unit 14 emits an optimum ringer sound according to the output from the control unit 11.

【0023】

The first embodiment makes it possible to control the ringing volume of a mobile phone at the time of an incoming call in accordance with the ambient noise level without the direct operation of the telephone by the user.

【0024】

Hereinafter, the operation of the acoustic adjustment device configured as described above will be described.

【0025】

FIG. 2 is a flowchart for explaining the operation of the acoustic adjustment device, and ST in the figure shows each step of the flow.

【0026】

First, in step ST1, when the incoming call instruction signal is sent from the base station to the mobile phone, the mobile phone transmits a signal to notify the base station that the signal can be received.

【0027】

During the communication with this base station, the microphone 13 built in the mobile phone is used to measure the volume of the ambient noise in the mobile phone (step ST2).

【0028】

In step ST3, the mobile phone determines the ringing volume preset in the mobile phone according to the measured volume, and rings the ringing tone from the ringer unit (sounder) 14 built in step ST4.

【0029】

The user hears this ringer sound and presses a key button to receive the sound (step ST5).

【0030】

As described above, the sound adjusting device according to the first embodiment measures the noise around the user after receiving an incoming call, sets the ringing sound level based on the measured noise signal, and sets the ringing sound. Since the ringing volume is set to ring at the level, the ringing volume can be specified according to the volume of ambient noise (noise), so it is possible to set the ringing volume at a low volume in a quiet environment (for example, a conference room or library). It will be possible and you will be able to receive calls without disturbing the people around you.

【0031】

In addition, in a mobile phone with a built-in vibrator, it is possible to operate this vibrator to make a call when there is noise below a certain level, and it is possible to operate without the user having to bother to set this mode. Become. On the contrary, in a situation where the ambient noise is extremely large, the ringing volume can be made high from the beginning, and the incoming call is less likely to be missed.

【0032】

The sound adjusting device according to the second embodiment of the present invention enables the user to make a call at a comfortable receiving volume immediately after receiving an incoming call. Since the hardware configuration of the acoustic adjustment device according to the present embodiment is the same as that in FIG. 1, the description of this part will be omitted.

【0033】

FIG. 3 is a flowchart for explaining the operation of the acoustic adjustment device according to the second embodiment, and the steps for performing the same processing as those in FIG. 2 are designated by the same reference numerals.

【0034】

First, in step ST1, when the incoming call instruction signal is sent from the base station to the mobile phone, the mobile phone transmits a signal to notify the base station that the signal can be received.

【0035】

During the communication with this base station, the microphone 13 built in the mobile phone is used to measure the volume of the ambient noise in the mobile phone (step ST2).

【0036】

In this way, first, the ambient noise at the place where the mobile phone is used is measured when receiving an incoming call.

【0037】

Next, in steps ST4 and ST5, the ringing tone and the receiving operation (incoming call operation) are performed. That is, the mobile phone determines the ringing volume set in the mobile phone in advance according to the measured volume, rings the ringing tone from the ringer unit 14 built in step ST4, and presses the key button in step ST5. Press to receive. Perform a reception operation.

【0038】

During this operation, the volume is adjusted to the volume level of the handset (speaker) of the mobile phone registered in advance in the mobile phone according to the amount of ambient noise in step ST6. The user will talk to the other party on this volume-controlled handset (step ST7).

【0039】

As described above, the sound adjusting device according to the second embodiment measures the noise around the user after receiving an incoming call, sets the volume of the handset of the mobile terminal based on the measured noise signal, and is set. Since the volume of the handset is adjusted according to the volume of the handset, the initial volume of the handset can be specified according to the volume of the ambient noise, so even if the ambient noise is loud, the other party's earpiece volume can be heard loudly from the beginning of the conversation. Therefore, it becomes possible to confirm the other party and hear the voice clearly. For the same reason, it is possible to obtain the effect that the user does not have to adjust the volume after the conversation.

【0040】

In addition, it is possible to have an initial conversation in a quiet environment without the other party's voice being heard abnormally loudly.

【0041】

The acoustic adjustment device according to the third embodiment of the present invention is limited to an in-vehicle hands-free kit for a mobile phone, and provides a function of automatically controlling the volume of an external speaker in response to ambient noise. Since the hardware configuration of the acoustic adjustment device according to the present embodiment is the same as that in FIG. 1, the description of this part will be omitted.

【0042】

FIG. 4 is a flowchart for explaining the operation of the acoustic adjustment device according to the third embodiment, and the steps for performing the same processing as those in FIGS. 2 and 3 are designated by the same reference numerals.

【0043】

After the incoming signal is input to the mobile phone connected to the in-vehicle hands-free kit (step ST1), the ambient noise volume measurement described in detail in the first embodiment is performed during the connection operation with the base station side. Is carried out using the external mounting microphone of the in-vehicle hands-free kit (step ST2). Next, in step ST3, the ringing tone from the external speaker is determined based on the measurement result, and in step ST4, the ringing tone is sounded by the external speaker.

【0044】

While the ringing tone is ringing (between sounds), the ambient noise volume is further measured in step ST2, and the earpiece volume of the external speaker is adjusted in step ST6.

【0045】

Here, when the reception operation is performed in step ST5 and the conversation is started (step ST7), the voice of the other party whose volume has been adjusted from the beginning can be heard.

【0046】

In addition, as shown in the latter part of Fig. 4, the amount of ambient noise is measured at regular intervals (when the user is not speaking) even during conversation, and the volume of the external speaker is exchanged according to the ambient noise level. Automatic adjustment can be performed during the talk time.

【0047】

Further, the external speaker volume can be adjusted when a certain amount of volume level difference occurs with the ambient noise amount measured at the initial stage as a reference value.

【0048】

As described above, the sound adjusting device according to the third embodiment detects the ambient noise amount at regular time intervals or at predetermined level changes by the vehicle-mounted microphone during a call, and is based on the detected noise signal. Since the volume of the in-vehicle external speaker is set and the volume of the in-vehicle external speaker is adjusted by the set volume, the volume of the external speaker of the in-vehicle hands-free kit is automatically adjusted according to the ambient noise amount. The following effects can be expected by being able to adjust.

【0049】

That is, since the user can recognize the telephone ringing tone at a volume corresponding to the ambient noise, it is possible to perform a natural reception line, and it is possible to reduce operation mistakes during driving as much as possible.

【0050】

Further, since the call sound of the other party is adjusted according to the ambient noise level, the user does not need to adjust the volume volume during the call, and the user can talk without neglecting the driving operation.

【0051】

The sound adjusting device according to the fourth embodiment of the present invention measures the transmission volume level on the side using the mobile phone and determines the reception volume according to the volume. Since the hardware configuration of the acoustic adjustment device according to the present embodiment is the same as that in FIG. 1, the description of this part will be omitted.

【0052】

FIG. 5 is a flowchart for explaining the operation of the acoustic adjustment device according to the fourth embodiment, and the steps for performing the same processing as those in FIGS. 2 and 3 are designated by the same reference numerals and the description of the overlapping portion is omitted. To do.

【0053】

When the user uses a mobile phone (or when the in-vehicle hands-free kit is installed), after entering the conversation mode in step ST7, the microphone (or external microphone) with built-in transmission volume on the user side is set in step ST8. The earpiece volume is adjusted according to the volume in step ST6, and the other party's voice is played from the handset in step ST7 in the subsequent stage.

【0054】

As described above, the sound adjusting device according to the fourth embodiment measures the transmission volume and controls the output of the handset based on the measured volume. The following effects can be expected by adjusting the listening volume.

【0055】

That is, the user usually talks with the other party by making the transmitted sound (voice) louder when the other party's voice cannot be heard well due to ambient noise or the like. In this case, when one's own voice becomes louder, the other party's voice (received sound) automatically becomes louder, so that the user can make a natural call.

【0056】

Further, even when the user has a slight deafness, the transmitted sound becomes louder and the received sound becomes louder accordingly, so that the user can make a comfortable call without adjusting the volume volume or the like.

【0057】

The acoustic adjustment device according to the fifth embodiment of the present invention provides a function of measuring ambient noise on the mobile phone side in advance and reducing noise during conversation. Since the hardware configuration of the acoustic adjustment device according to the present embodiment is the same as that in FIG. 1, the description of this part will be omitted.

【0058】

FIG. 6 is a flowchart for explaining the operation of the acoustic adjustment device according to the fifth embodiment, and the steps for performing the same processing as those in FIGS. 2 and 3 are designated by the same reference numerals and the description of the overlapping portion is omitted. To do.

【0059】

First, in step ST11, the incoming signal is received from the base station side, and while the user performs the reception operation, the noise pattern around the use is measured using the built-in microphone of the mobile phone used by the user.

【0060】

Next, the ambient noise pattern measured in step ST12 is digitally processed to generate an anti-phase pattern of the pattern.

【0061】

In addition, when the user enters a call state and transmits voice, ambient noise is also transmitted at the same time (steps ST13 to ST15).

【0062】

In step ST16, the signal obtained by digitally processing these composite sounds inside the device and the data obtained by first digitally processing the ambient noise into an anti-phase pattern are mixed, and the audio signal processing for removing only the ambient noise is performed.

【0063】

After being mixed, only the user's voice data remains. This is sent to the other party (step ST17).

【0064】

In step ST18, the received signal is processed by the other party, and in step ST19, the receiver (speaker) can hear the received signal as reproduced voice with reduced ambient noise.

【0065】

As described above, the acoustic adjustment device according to the fifth embodiment measures the characteristic pattern of the ambient noise, generates a pattern of the opposite phase to the measured ambient noise, and generates the antiphase pattern and the input sound. Since the voice signal processing for reducing the ambient noise is performed by synthesizing, the ambient noise using the mobile phone can be reduced, and only the clear voice can be transmitted to the other party. Further, by using this method during a call, noise reduction with higher accuracy can be achieved.

【0066】

The acoustic adjustment device according to the sixth embodiment of the present invention realizes a call in which ambient noise is reduced by using an external microphone and a built-in microphone of the mobile phone when the in-vehicle hands-free kit for the mobile phone is used. is there.

【0067】

FIG. 7 is a flowchart for explaining the operation of the acoustic adjustment device according to the sixth embodiment, and the steps for performing the same processing as those in FIG. 6 are designated by the same reference numerals and the description of the overlapping portion is omitted.

【0068】

First, in step ST21, the user emits a voice (input voice) to the external microphone of the in-vehicle hands-free kit. At this time, ambient noise is picked up by the external microphone together with the voice (step ST22). Assuming that the input voice is (A) and the ambient noise is (B), (Α) + (B) is input to the external microphone (step ST23).

【0069】

In addition, the mobile phone is fixed to the main body of the in-vehicle hands-free kit. In step ST24, ambient noise (B) is picked up by operating the built-in microphone of this telephone. At this time, since the user's voice has a sufficient distance from the input level on the external microphone side, it becomes sufficiently small and can be almost ignored.

【0070】

Next, in step ST26, the mobile phone (or the main body of the in-vehicle hands-free kit) converts the sound input from the above two distant microphones into data, and the converted data is converted into data according to the equation (1). Calculate the difference.

【0071】

Ambient noise (B) can be eliminated by performing the difference calculation of each of the converted data.

【0072】

(A + Β)-Β = A ... (1) Only the user's voice data remains in the difference-calculated voice data. This transmission signal (A) is transmitted to the other party (step ST17).

【0073】

In step ST18, the received signal (A) is processed by the other party, and in step ST19, only the input voice (A) with reduced ambient noise can be reproduced from the other party's handset (speaker).

【0074】

As described above, the sound adjustment device according to the sixth embodiment detects voice signals by an external microphone for an in-vehicle device and a built-in microphone built in a mobile terminal, and calculates an input difference between these voice signals. Since the audio signal processing for reducing the ambient noise is performed, the ambient noise can be reduced extremely easily, and a clear output of only the audio can be expected to the other party.

【0075】

Further, by having two or more external microphones of the in-vehicle hands-free kit, this difference method can be used only with the hands-free kit, and ambient noise can be reduced.

【0076】

The acoustic adjustment device according to the seventh embodiment of the present invention is good because it reduces ambient noise by cutting the input sound at a certain level and further amplifying it in a mobile phone (or an in-vehicle hands-free kit). It provides call quality.

【0077】

FIG. 8 is a diagram for explaining the operation of the acoustic adjustment device according to the seventh embodiment.

【0078】

First, in step ST31, the built-in microphone of the mobile phone collects the synthetic sound of the user's transmitted voice and the ambient voice of the usage environment. These synthetic sounds are digitally processed in the mobile phone and sampled as signal levels.

【0079】

Comparing the call sound and the ambient noise level, this composite signal is cut at a certain level by utilizing the characteristic that the level of the call sound of the user who is usually close to the microphone side becomes large (step ST32).

【0080】

Then, in step ST33, this composite signal is amplified by the cut level and raised to the original level. This amplified signal is transmitted to the other party.

【0081】

As described above, the acoustic adjustment device according to the seventh embodiment cuts the composite signal level of the voice signal and the composite signal of the ambient noise at a predetermined level, and then amplifies the cut level to reduce the ambient noise. Since the audio signal processing is performed, it is possible to cut almost all the ambient noise, and it is possible to transmit the audio with less ambient noise to the other party.

【0082】

Here, by combining with the methods of each of the above-described embodiments, the ambient noise level is measured in advance, and the cut level is set up to that level, so that more reliable ambient noise cutting is possible.

【0083】

Therefore, if an acoustic adjustment device having such excellent features is applied to a wireless mobile terminal device such as a mobile phone including PHS or an in-vehicle mobile terminal by transmitting and receiving a wireless signal, it is more convenient to use in these wireless mobile terminal devices. You can make good calls.

【0084】

The acoustic adjustment device according to each of the above embodiments can be applied to a wireless calling device such as a mobile phone as described above, but of course, the present invention is not limited to this, and any device that performs the above acoustic adjustment can be applied. Needless to say, it is applicable to the device (for example, pager).

【0085】

Further, in each of the above embodiments, the processing in the control unit is shown as an example of the processing means, but any one that detects the noise around the user after receiving an incoming call and performs a predetermined processing based on the detected data output. Needless to say, such a processing method may be used.

【0086】

Further, it goes without saying that the types of devices constituting the sound adjusting device, the wired / wireless system, and the like are not limited to the above-described embodiments.

【0087】

[Effect of the invention]

In the sound adjusting device according to the present invention, the noise signal detecting means for detecting ambient noise, the volume setting means for setting the ringing sound level based on the noise signal detected by the noise signal detecting means, and the volume setting means for setting the ringing sound level. Since it is configured with a ringing means that rings at the ringing sound level, it is possible to make the ringing volume at a low volume in a quiet environment, and it is possible to receive an incoming call without disturbing people around. .. Further, in a situation where the ambient noise is extremely large, it is possible to make the ringing volume high from the beginning, and it is possible to obtain the effect of reducing missed incoming calls.

【0088】

In the sound adjusting device according to the present invention, a noise signal detecting means for detecting ambient noise, a volume setting means for setting the volume of the handset of the mobile terminal based on the noise signal detected by the noise signal detecting means, and a volume setting. Since it is provided with a volume adjusting means for adjusting the volume of the handset at the volume set by the means, even if the ambient noise is loud, the receiving volume of the other party can be heard loudly from the start of the conversation, and the other party's receiving volume can be heard loudly. You can confirm and hear the voice clearly, and you can have an initial conversation in a quiet environment without the other party's voice being heard abnormally loudly.

【0089】

In the sound adjusting device according to the present invention, the noise signal detecting means for detecting the ambient noise amount at regular time intervals or each predetermined level change by the vehicle-mounted microphone during a call, and the noise signal detected by the noise signal detecting means. A volume setting means for setting the volume of the vehicle-mounted external speaker based on the above, and a volume adjusting means for adjusting the volume of the vehicle-mounted external speaker with the volume set by the volume setting means at regular time intervals or at predetermined level changes. Since it is configured to be prepared, the user can recognize the telephone ringing sound at a volume corresponding to the ambient noise, which enables a natural reception line and reduces operation mistakes during driving as much as possible. In addition, the user does not need to adjust the volume volume during a call, and can obtain the effect of enabling conversation without neglecting the driving operation.

【0090】

Since the sound adjusting device according to the present invention is provided with a speech volume measuring means for measuring the speech volume and is configured to control the output of the handset based on the volume measured by the speech volume measuring means, the user can use it. Natural calls are possible, and comfortable calls can be realized without adjusting the voice volume or the like.

【0091】

In the acoustic adjustment device according to the present invention, a pattern measuring means for measuring a characteristic pattern of ambient noise, an anti-phase pattern generating means for generating a pattern opposite to the ambient noise measured by the pattern measuring means, and an anti-phase pattern generating means. Since it is configured with an audio signal processing means that combines the output and input sound of the means to reduce ambient noise, it is possible to reduce ambient noise using a mobile phone and it is clear to the other party. It is possible to convey only voice.

【0092】

In the sound adjusting device according to the present invention, a first audio signal detecting means for detecting an audio signal by an external microphone mounted on a vehicle and a second audio signal detecting means for detecting an audio signal by a built-in microphone built in a mobile terminal. And, since the audio signal processing means for reducing the ambient noise by calculating the input difference between the output of the first audio signal detecting means and the output of the second audio signal detecting means is provided, the ambient noise is extremely reduced. It can be easily reduced, and a clear output of only audio can be expected from the other party.

【0093】

The acoustic adjustment device according to the present invention is provided with an audio signal processing means for reducing ambient noise by cutting the combined signal level of the combined signal of the audio signal and ambient noise at a predetermined level and then amplifying the cut level. Since it is configured, it is possible to cut almost all the ambient noise, and it is possible to transmit a sound with less ambient noise to the other party.

[Simple explanation of drawings]

[Figure 1]

It is a block diagram which shows the structure of the acoustic adjustment apparatus which concerns on 1st Embodiment to which this invention is applied.

[Figure 2]

It is a flowchart for demonstrating the operation of the said acoustic adjustment apparatus.

[Fig. 3]

It is a flowchart for demonstrating operation of the acoustic adjustment apparatus which concerns on 2nd Embodiment which applied this invention.

[Fig. 4]

It is a flowchart for demonstrating operation of the acoustic adjustment apparatus which concerns on 3rd Embodiment to which this invention is applied.

[Fig. 5]

It is a flowchart for demonstrating operation of the acoustic adjustment apparatus which concerns on 4th Embodiment to which this invention was applied.

[Fig. 6]

It is a flowchart for demonstrating operation of the acoustic adjustment apparatus which concerns on 5th Embodiment to which this invention was applied.

[Fig. 7]

It is a flowchart for demonstrating operation of the acoustic adjustment apparatus which concerns on 6th Embodiment to which this invention was applied.

[Fig. 8]

It is a figure for demonstrating operation of the acoustic adjustment apparatus which concerns on 6th Embodiment to which this invention is applied.

[Explanation of symbols]

1 Sound regulator, 11 Controls, 12 Radios, 13 Microphones, 14 Ringers, 15 Handsets