JP2023152510A - Voice output control device and voice output control method - Google Patents

Abstract

To appropriately cancel impact noise reaching a head portion of a user through the body thereof.SOLUTION: A voice output control device 60 is a voice output control device of an earphone, comprising: a voice output control unit 67 that controls a voice output from the earphone; an acceleration speed acquisition unit 63 that acquires an acceleration speed data indicating impact transmitted by bone conduction to an ear portion of a user from an acceleration speed sensor 53 arranged in the earphone; and a vibration cancellation processing portion 65 that cancels impact noise transmitted by the bone conduction to the ear portion of the used on the basis of the acceleration speed data acquired by the acceleration speed acquisition unit 63. The voice output control unit 67 controls an output of a voice cancelled by the impact noise by the vibration cancellation processing portion 65.SELECTED DRAWING: Figure 1

Description

The present invention relates to an audio output control device and an audio output control method.

Active noise outputs a control signal that mutes vibration noise from a vibration noise source from a speaker, and inputs an error signal between the vibration noise detected by a microphone and the control signal, and an acceleration signal of the vibration noise source detected by an acceleration sensor. A control device is known (for example, see Patent Document 1).

International Publication No. 2015/125275

It is known that wireless earphones cancel out surrounding noise to make it easier to hear the music being played. However, when a user wearing wireless earphones walks or runs, it may be difficult to hear the music being played due to the impact sound that travels through the user's body and reaches the user's head. Therefore, it is desirable to appropriately cancel the impact sound that travels through the user's body and reaches the user's head.

The present invention has been made in view of the above, and an object of the present invention is to appropriately cancel impact sound that travels through the user's body and reaches the user's head.

In order to solve the above-mentioned problems and achieve the objects, an audio output control device according to the present invention is an audio output control device for earphones, and includes an audio output control section that controls audio output from the earphones, and an audio output control section that controls audio output from the earphones; an acceleration acquisition unit that acquires acceleration data indicating an impact transmitted to the user's ear by bone conduction from an acceleration sensor disposed in the earphone; and a vibration cancellation processing section that cancels impact sound transmitted to the ear by bone conduction, and the audio output control section controls the vibration cancellation processing section to output sound with the impact sound canceled.

The audio output control method according to the present invention is an audio output control method for earphones, which includes: an audio output control step for controlling audio output from the earphones; an acceleration acquisition step of acquiring acceleration data indicating an impact transmitted by bone conduction; and a vibration that cancels the impact sound transmitted to the user's ear by bone conduction based on the acceleration data acquired by the acceleration acquisition step. a cancellation processing step, and the audio output control step controls to output the sound with the impact sound canceled by the vibration cancellation processing step.

According to the present invention, it is possible to appropriately cancel the impact sound that travels through the user's body and reaches the user's head.

FIG. 1 is a block diagram showing an example of the configuration of the left earphone according to the first embodiment. FIG. 2 is a block diagram showing a configuration example of the right earphone according to the first embodiment. FIG. 3 is a flowchart showing the flow of the control device according to the first embodiment. FIG. 4 is a block diagram showing a configuration example of the left earphone according to the second embodiment. FIG. 5 is a block diagram showing a configuration example of the right earphone according to the second embodiment. FIG. 6 is a flowchart showing the flow of the control device according to the second embodiment.

Embodiments of the present invention will be described below with reference to the accompanying drawings. In this embodiment, devices that output audio near the ear, such as earphones and headphones, are collectively referred to as "earphones," and in particular, an embodiment will be described in which the present invention is applied to wireless earphones. Embodiments of an audio output control device and an audio output control method for wireless earphones 10 according to the present invention will be described in detail. Note that the present invention is not limited to the following embodiments.

[First embodiment]
The wireless earphone 10 is a left and right separated type wireless earphone. The wireless earphone 10 has a left earphone 10L and a right earphone 10R. The left earphone 10L and the right earphone 10R are paired, for example, by Bluetooth (registered trademark) connection. In the following description, if it is not necessary to distinguish between the left earphone 10L and the right earphone 10R, they will be described as the wireless earphone 10. The left earphone 10L and the right earphone 10R can be charged by being housed in a charging case (not shown).

In the present embodiment, the wireless earphone 10 will be described assuming that the left earphone 10L is a base device that can communicate with a portable electronic device, and the right earphone 10R is a slave device that can communicate with the left earphone 10L. Not limited. In the wireless earphone 10, the right earphone 10R may be a parent device, and the left earphone 10L may be a child device. In this case, the configurations of the left earphone 10L and the right earphone 10R are opposite to those described below.

(Left earphone)
The left earphone 10L will be explained using FIG. 1. FIG. 1 is a block diagram showing an example of the configuration of the left earphone according to the first embodiment. The left earphone 10L is an earphone for the left ear. The left earphone 10L acquires music data from a portable electronic device. The left earphone 10L outputs left channel data of music data from the speaker 56L. The left earphone 10L outputs right channel data of music data to the right earphone 10R. The left earphone 10L includes a communication section 51L, a left and right communication section 52L, a triaxial sensor (acceleration sensor) 53L, a speaker 56L, a left battery 59L, and a control section (audio output control device) 60L.

The communication section 51L is a communication unit. The communication unit 51L connects to a portable electronic device so as to be able to transmit and receive data. In this embodiment, the communication unit 51L receives data including music data from a portable electronic device. The communication unit 51L is capable of short-range wireless communication and short-range electromagnetic induction, including, for example, Bluetooth or NFMI (Near-Field Magnetic Induction). In this embodiment, the communication unit 51L can be paired with a portable electronic device through Bluetooth connection.

The left and right communication section 52L is a communication unit. The left and right communication unit 52L is connected to the right earphone 10R so as to be able to transmit data. In this embodiment, the left and right communication unit 52L transmits right channel data to the right earphone 10R among the music data received from the portable electronic device. The left and right communication unit 52L is capable of short-range wireless communication including, for example, Bluetooth. The communication unit 51L can be paired with the right earphone 10R through Bluetooth connection.

The three-axis sensor 53L is an acceleration sensor that detects vibrations in the left earphone 10L, in other words, an impact transmitted to the head of the user wearing the left earphone 10L, more specifically, to the left ear by bone conduction. The three-axis sensor 53L detects, for example, an impact such as landing while the user is walking or running. The three-axis sensor 53L outputs the acquired acceleration data to the acceleration acquisition section 63L. The acceleration data includes acceleration data in the X-axis direction, acceleration data in the Y-axis direction, and acceleration data in the Z-axis direction.

The speaker 56L outputs audio to be listened to in the left ear. The speaker 56L converts the electrical signal obtained by D/A converting the left channel data of the music data into a sound in the audio output control section 67L, and outputs the sound.

The left battery 59L supplies power for operating the left earphone 10L. The left battery 59L is a battery that can be repeatedly charged and discharged. The left battery 59L is, for example, a nickel metal hydride rechargeable battery, a lithium ion rechargeable battery, or a lithium polymer rechargeable battery. The left battery 59L is built into the left earphone 10L. The left battery 59L is charged when housed in the charging case.

(Left earphone control)
The control unit 60L controls the output of audio from the left earphone 10L. The control unit 60L outputs sound that cancels the impact sound caused by the impact transmitted to the left ear of the user wearing the left earphone 10L. The control unit 60L is an arithmetic processing device including, for example, a CPU (Central Processing Unit). The control unit 60L loads a program stored in a storage unit (not shown) into memory and executes instructions included in the program. The control unit 60L includes an internal memory (not shown), which is used for temporary storage of data. The control unit 60L includes a communication control unit 61L, a left and right communication control unit 62L, an acceleration acquisition unit 63L, a vibration cancellation processing unit 65L, and an audio output control unit 67L.

The communication control unit 61L performs wireless communication with the portable electronic device by controlling the communication unit 51L.

The left and right communication control unit 62L performs wireless communication with the right earphone 10R by controlling the left and right communication unit 52L.

The acceleration acquisition unit 63L acquires acceleration data from the three-axis sensor 53L. The acceleration acquisition unit 63L acquires acceleration data indicating the vibration in the left earphone 10L, in other words, the impact transmitted to the left ear of the user wearing the left earphone 10L. The acceleration acquisition unit 63L acquires acceleration data indicating, for example, an impact such as landing while the user is walking or running.

The vibration cancellation processing unit 65L cancels the impact sound caused by the impact transmitted to the left ear of the user wearing the left earphone 10L, based on the acceleration data acquired by the acceleration acquisition unit 63L. The vibration cancellation processing unit 65L cancels, for example, impact sound caused by bone conduction in the user's left ear based on the acceleration data acquired by the acceleration acquisition unit 63L. The vibration cancellation processing unit 65L cancels, for example, an impact sound caused by an impact when the user lands while walking or running, based on the acceleration data acquired by the acceleration acquisition unit 63L. The vibration cancellation processing section 65L generates waveform data for canceling the impact sound and transmits it to the audio output control section 67L. More specifically, the vibration cancellation processing unit 65L generates waveform data having a phase opposite to the vibration caused by the impact when the user lands while walking or running, from the acceleration data.

The vibration cancellation processing unit 65L may directly generate waveform data of opposite phase from the acquired acceleration data. As a result, waveform data with the opposite phase of the vibration caused by the impact when the user lands while walking or running is generated in real time.

The vibration cancellation processing unit 65L may, for example, predict the user's walking speed from acceleration data for the most recent few minutes, generate predicted waveform data, and generate waveform data with the opposite phase of the predicted waveform data. For example, the walking speed when walking or running is constant. Therefore, the walking speed can be predicted from the acceleration data of the last several minutes or so.

The audio output control unit 67L controls the output of audio from the left earphone 10L. More specifically, the audio output control unit 67L controls the left earphone 10L to output music data as sound. The audio output control section 67L outputs a signal obtained by D/A converting the left channel data of the music data and amplifying it from the speaker 56L.

The audio output control unit 67L controls the vibration cancellation processing unit 65L to output sound with impact sound canceled when outputting from the speaker 56L. More specifically, the audio output control unit 67L superimposes waveform data generated by the vibration cancellation processing unit 65L and has an opposite phase to the vibration caused by the impact on the music data signal, and outputs the superimposed waveform data. For example, the audio output control unit 67L controls the speaker 56L to output audio that cancels impact sound caused by bone conduction in the user's left ear. For example, the audio output control unit 67L controls the speaker 56L to output audio that cancels the impact sound caused by the impact when the user lands while walking or running.

(right earphone)
The right earphone 10R will be explained using FIG. 2. FIG. 2 is a block diagram showing a configuration example of the right earphone according to the first embodiment. The right earphone 10R is an earphone for the right ear. The right earphone 10R acquires right channel data of music data from the left earphone 10L and outputs it. The right earphone 10R includes a left and right communication section 52R, a triaxial sensor (acceleration sensor) 53R, a speaker 56R, a right battery 59R, and a control section (audio output control device) 60R.

The left and right communication section 52R is a communication unit. The left and right communication unit 52R is connected to the left earphone 10L so as to be able to transmit and receive data. In this embodiment, the left and right communication unit 52R receives right channel data of music data from the left earphone 10L. The left and right communication unit 52R is capable of short-range wireless communication including, for example, Bluetooth. The left and right communication unit 52R can be paired with the left earphone 10L through Bluetooth connection.

The three-axis sensor 53R is an acceleration sensor that detects an impact on the right earphone 10R, in other words, an impact transmitted to the head of the user wearing the right earphone 10R, more specifically, to the right ear by bone conduction. The three-axis sensor 53R outputs the acquired acceleration data to the acceleration acquisition section 63R. The acceleration data includes acceleration data in the X-axis direction, acceleration data in the Y-axis direction, and acceleration data in the Z-axis direction.

The speaker 56R outputs audio to be listened to in the right ear. The speaker 56R converts the electrical signal obtained by D/A converting the right channel data of the music data into sound in the audio output control section 67R, and outputs the sound.

The right battery 59R supplies power for operating the right earphone 10R. The right battery 59R is a battery that can be repeatedly charged and discharged. The right battery 59R is, for example, a nickel metal hydride rechargeable battery, a lithium ion rechargeable battery, or a lithium polymer rechargeable battery. The right battery 59R is built into the right earphone 10R. The right battery 59R is charged when housed in the charging case.

(control section of right earphone)
The control unit 60R is an arithmetic processing device including, for example, a CPU. The control unit 60R loads a program stored in a storage unit (not shown) into memory and executes instructions included in the program. The control unit 60R includes an internal memory (not shown), which is used for temporary storage of data. The control unit 60R includes a left and right communication control unit 62R, an acceleration acquisition unit 63R, a vibration cancellation processing unit 65R, and an audio output control unit 67R. In this embodiment, each section of the control section 60R has the same function as each section of the control section 60L.

The left and right communication control unit 62R performs wireless communication with the left earphone 10L by controlling the left and right communication unit 52R.

The acceleration acquisition unit 63R acquires acceleration data from the three-axis sensor 53R. The acceleration acquisition unit 63R acquires acceleration data indicating the vibration in the right earphone 10R, in other words, the impact transmitted to the right ear of the user wearing the right earphone 10R. The acceleration acquisition unit 63R acquires acceleration data indicating, for example, an impact such as landing while the user is walking or running.

The vibration cancellation processing unit 65R cancels the impact sound caused by the impact transmitted to the right ear of the user wearing the right earphone 10R, based on the acceleration data acquired by the acceleration acquisition unit 63R. The vibration cancellation processing unit 65R cancels, for example, impact sound caused by bone conduction in the user's right ear based on the acceleration data acquired by the acceleration acquisition unit 63R. The vibration cancellation processing unit 65R cancels, for example, an impact sound caused by an impact when the user lands while walking or running, based on the acceleration data acquired by the acceleration acquisition unit 63R. The vibration cancellation processing section 65R generates waveform data for canceling the impact sound and transmits it to the audio output control section 67R. More specifically, the vibration cancellation processing unit 65R generates waveform data having a phase opposite to the vibration caused by the impact when the user lands while walking or running, from the acceleration data.

The vibration cancellation processing unit 65R may directly generate waveform data of opposite phase from the acquired acceleration data. As a result, waveform data with the opposite phase of the vibration caused by the impact when the user lands while walking or running is generated in real time.

The vibration cancellation processing unit 65R may, for example, predict the user's walking speed from acceleration data for the most recent few minutes, generate predicted waveform data, and generate waveform data with the opposite phase of the predicted waveform data. For example, the walking speed when walking or running is constant. Therefore, the walking speed can be predicted from the acceleration data of the last several minutes or so.

The audio output control unit 67R controls the output of audio from the right earphone 10R. More specifically, the audio output control unit 67R controls the right earphone 10R to output music data as sound. The audio output control unit 67R outputs a signal obtained by D/A converting the right channel data of the music data and amplifying it from the speaker 56R.

When outputting from the speaker 56R, the audio output control unit 67R controls the vibration cancellation processing unit 65R to output audio with impact sound canceled. More specifically, the audio output control unit 67R superimposes waveform data generated by the vibration cancellation processing unit 65R and has an opposite phase to the vibration caused by the impact on the music data signal, and outputs the superimposed waveform data. For example, the audio output control unit 67R controls the speaker 56R to output audio that cancels impact sound caused by bone conduction in the user's right ear. For example, the audio output control unit 67R controls the speaker 56R to output audio that cancels the impact sound caused by the impact when the user lands while walking or running.

(Voice control method)
Next, information processing in the wireless earphone 10 will be described using FIG. 3. FIG. 3 is a flowchart showing the flow of the control device according to the first embodiment. When the power of the wireless earphone 10 is turned on, when music reproduction is started, or when an operation to start vibration canceling processing is performed, the processing of the flowchart shown in FIG. 3 is started. In the following explanation of the flowchart of FIG. 3, the left earphone 10L will be explained as an example, but the same applies to the right earphone 10R.

The control unit 60L detects vibration (step S101). The control unit 60L uses the acceleration acquisition unit 63L to acquire acceleration data from the three-axis sensor 53L. The impact transmitted to the head of the user wearing the left earphone 10L is detected. The control unit 60L proceeds to step S102.

The control unit 60L performs vibration cancellation processing (step S102). The control unit 60L uses the vibration cancellation processing unit 65L to generate waveform data for canceling the impact sound and transmits it to the audio output control unit 67L. More specifically, the control unit 60L uses the vibration cancellation processing unit 65L to generate waveform data having a phase opposite to the vibration caused by the shock of walking or running of the user from the acceleration data. The control unit 60L proceeds to step S103.

The control unit 60L outputs audio (step S103). The control unit 60L controls the audio output control unit 67L to output the sound with the impact sound canceled by the vibration cancellation processing unit 65L. More specifically, the control unit 60L causes the audio output control unit 67L to superimpose and output waveform data having an opposite phase to the vibration caused by the impact, which is generated by the vibration cancellation processing unit 65L. The control unit 60L proceeds to step S104.

The control unit 60L determines whether or not to end (step S104). The control unit 60L determines to end when the left earphone 10L is powered on, when music starts playing, or when an operation to start vibration cancellation processing is performed. If the control unit 60L determines to end the process (Yes in step S104), it ends the process of this flowchart. If the control unit 60L does not determine to end (No in step S104), it executes the process in step S101 again.

In this way, the control unit 60L outputs sound that cancels the impact sound caused by the impact transmitted to the left ear of the user wearing the left earphone 10L.

(effect)
As described above, according to the present embodiment, it is possible to cancel the impact sound transmitted to the user's ear by bone conduction based on the acceleration data indicating the impact transmitted to the user's ear by bone conduction. According to the present embodiment, it is possible to output sound in which the impact sound caused by the impact transmitted to the ear of the user wearing the wireless earphone 10 is canceled.

[Second embodiment]
The wireless earphone 10A according to this embodiment will be described with reference to FIGS. 4 to 6. FIG. 4 is a block diagram showing a configuration example of the left earphone according to the second embodiment. FIG. 5 is a block diagram showing a configuration example of the right earphone according to the second embodiment. FIG. 6 is a flowchart showing the flow of the control device according to the second embodiment. The wireless earphone 10A has the same basic configuration as the wireless earphone 10 of the first embodiment. In the following description, components similar to those of the wireless earphone 10 will be denoted by the same or corresponding symbols, and detailed description thereof will be omitted. The left earphone 10L differs from the first embodiment in that it includes a microphone (sound collection section) 54LA, a voice acquisition section 64LA, and a voice cancellation processing section 66LA, and the processing in the voice output control section 67LA. The right earphone 10R differs from the first embodiment in that it includes a microphone (sound collection section) 54RA, a voice acquisition section 64RA, and a voice cancellation processing section 66RA, and the processing in the voice output control section 67RA.

The microphone 54L acquires external sound (noise) from the left earphone 10L. The microphone 54L outputs the acquired acceleration data to the acceleration acquisition section 63L.

The audio acquisition unit 64LA acquires audio data from the microphone 54L. The audio acquisition unit 64LA acquires audio data of external audio in the left earphone 10L.

The voice cancellation processing unit 66LA cancels surrounding noise based on the voice data acquired by the voice acquisition unit 64LA. The voice cancellation processing unit 66LA generates waveform data that cancels surrounding noise. The method for canceling surrounding sounds is not limited and can be any known method.

When outputting from the speaker 56L, the audio output control unit 67LA controls the vibration cancellation processing unit 65L to cancel the impact sound, and the audio cancellation processing unit 66LA to output the sound with surrounding noise canceled. More specifically, the audio output control unit 67L generates waveform data with the opposite phase of the vibration caused by the impact, which is generated by the vibration cancellation processing unit 65L, and waveform data with the opposite phase of the surrounding noise, which is generated by the audio cancellation processing unit 66LA. The waveform data is superimposed on the music data signal and output.

The microphone 54R acquires external sound (noise) from the right earphone 10R. The microphone 54R outputs the acquired acceleration data to the acceleration acquisition section 63R.

The audio acquisition unit 64RA acquires audio data from the microphone 54R. The audio acquisition unit 64RA acquires audio data of external audio in the right earphone 10R.

The voice cancellation processing unit 66RA cancels surrounding noise based on the voice data acquired by the voice acquisition unit 64RA. The voice cancellation processing unit 66RA generates waveform data that cancels surrounding noise. The method for canceling surrounding sounds is not limited and can be any known method.

When outputting from the speaker 56R, the audio output control unit 67RA controls the vibration cancellation processing unit 65R to cancel the impact sound, and the audio cancellation processing unit 66RA to output the sound with surrounding noise canceled. More specifically, the audio output control unit 67R generates waveform data with the opposite phase of the vibration caused by the impact, which is generated by the vibration cancellation processing unit 65R, and waveform data with the opposite phase of the surrounding noise, which is generated by the audio cancellation processing unit 66RA. The waveform data is superimposed on the music data signal and output.

Next, information processing in the wireless earphone 10 will be described using FIG. 6. Steps S111, S112, and S116 in the flowchart shown in FIG. 6 perform the same processing as steps S101, S102, and S104 in the flowchart shown in FIG.

The control unit 60LA detects surrounding noise (step S113). The control unit 60LA acquires audio data of external audio using the microphone 54L. The control unit 60LA proceeds to step S114.

The control unit 60LA performs a process of canceling surrounding noise (step S114). The control unit 60LA uses the audio cancellation processing unit 66L to generate waveform data for canceling surrounding noise and transmits it to the audio output control unit 67LA. The control unit 60LA proceeds to step S115.

The control unit 60LA outputs audio (step S115). The control unit 60LA controls the sound output control unit 67LA so that the vibration cancellation processing unit 65L cancels the impact sound, and the sound cancellation processing unit 66LA outputs the sound with surrounding noise canceled. More specifically, the control unit 60LA generates waveform data in the opposite phase of the vibration caused by the impact, generated by the vibration cancellation processing unit 65L, and waveform data in the opposite phase of the surrounding noise, generated by the voice cancellation processing unit 66LA. is superimposed on the music data signal and output. The control unit 60LA proceeds to step S116.

In this way, the control unit 60L cancels the impact sound caused by the impact transmitted to the left ear of the user wearing the left earphone 10L, and outputs sound with surrounding noise canceled.

As described above, according to the present embodiment, it is possible to cancel the impact sound caused by the impact transmitted to the ear of the user wearing the wireless earphone 10, and to output sound with surrounding noise canceled.

Each component of the illustrated wireless earphone 10 is functionally conceptual, and does not necessarily have to be physically configured as illustrated. In other words, the specific form of each device is not limited to what is shown in the diagram, and all or part of it may be functionally or physically distributed or integrated into arbitrary units depending on the processing load and usage status of each device. You can.

The configuration of the wireless earphone 10 is realized by, for example, a program loaded into a memory as software. The above embodiments have been described as functional blocks realized by cooperation of these hardware or software. That is, these functional blocks can be realized in various forms using only hardware, only software, or a combination thereof.

The components described above include those that can be easily imagined by those skilled in the art and that are substantially the same. Furthermore, the configurations described above can be combined as appropriate. Furthermore, various omissions, substitutions, or changes in the configuration are possible without departing from the gist of the present invention.

In the above description, the wireless earphone 10 has been described assuming that the left earphone 10L and the right earphone 10R perform vibration cancellation processing independently, but the present invention is not limited to this. For example, the three-axis sensor 53 may be provided only in either the left earphone 10L or the right earphone 10R. If only the left earphone 10L is equipped with the three-axis sensor 53L, the data after vibrations have been canceled by the vibration cancellation processing section 65L of the control section 60L may be transmitted to the right earphone 10R.

Although the present invention has been described above as an example of an embodiment in which the present invention is applied to wireless earphones, it is also possible to apply the present invention to wired earphones.

10 Wireless earphone 10L Left earphone 10R Right earphone 51L Communication section 52L Left and right communication section 52R Left and right communication section 53L 3-axis sensor (acceleration sensor)
53R 3-axis sensor (acceleration sensor)
56L Speaker 56R Speaker 59L Left battery 59R Right battery 60L Control unit (audio output control device)
60R control unit (audio output control device)
61L Communication control section 62L Communication control section for left and right 62R Communication control section for left and right 63L Acceleration acquisition section 63R Acceleration acquisition section 65L Vibration cancellation processing section 65R Vibration cancellation processing section 67L Audio output control section 67R Audio output control section

Claims (4)

An audio output control device for earphones,
an audio output control unit that controls audio output from the earphone;
an acceleration acquisition unit that acquires acceleration data indicating an impact transmitted to the user's ear by bone conduction from an acceleration sensor disposed in the earphone;
a vibration cancellation processing unit that cancels impact sound transmitted to the user's ear by bone conduction based on the acceleration data acquired by the acceleration acquisition unit;
Equipped with
The audio output control unit controls the vibration cancellation processing unit to output sound with impact sound canceled.
Audio output control device. an audio acquisition unit that acquires audio data of surrounding sounds from a sound collection unit disposed in the earphone;
a voice cancellation processing unit that cancels noise around the user based on the voice data acquired by the voice acquisition unit;
Equipped with
The audio output control unit controls the audio cancellation processing unit to output noise-cancelled audio.
The audio output control device according to claim 1. The acceleration acquisition unit acquires acceleration data indicating a landing impact while the user is walking or running.
The audio output control device according to claim 1. A method for controlling audio output of earphones, the method comprising:
an audio output control step of controlling audio output from the earphone;
an acceleration acquisition step of acquiring acceleration data indicating an impact transmitted to the user's ear by bone conduction from an acceleration sensor disposed in the earphone;
a vibration cancellation processing step of canceling impact sound transmitted to the user's ear by bone conduction based on the acceleration data acquired in the acceleration acquisition step;
including;
The sound output control step controls to output sound with the impact sound canceled by the vibration cancellation processing step.
Audio output control method.

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