WO2020255601A1 - Dispositif de commande sonore de sortie, procédé de commande sonore de sortie et programme - Google Patents

Dispositif de commande sonore de sortie, procédé de commande sonore de sortie et programme Download PDF

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Publication number
WO2020255601A1
WO2020255601A1 PCT/JP2020/019417 JP2020019417W WO2020255601A1 WO 2020255601 A1 WO2020255601 A1 WO 2020255601A1 JP 2020019417 W JP2020019417 W JP 2020019417W WO 2020255601 A1 WO2020255601 A1 WO 2020255601A1
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Prior art keywords
sound
level
external sound
output
external
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PCT/JP2020/019417
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English (en)
Japanese (ja)
Inventor
英治 斧
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ソニー株式会社
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Priority to DE112020002932.8T priority Critical patent/DE112020002932T5/de
Publication of WO2020255601A1 publication Critical patent/WO2020255601A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones

Definitions

  • the present disclosure relates to an output sound control device, an output sound control method, and a program. More specifically, the present invention relates to an output sound control device for controlling an output sound from a speaker of a headphone of a system having an external sound capturing function, an output sound control method, and a program.
  • Patent Document 1 Japanese Patent Laid-Open No. 2009-528275. This patent document discloses a configuration for adjusting the synthesis ratio of a reproduced sound signal such as music and an ambient sound signal.
  • the composite ratio of the reproduced music and the ambient sound signal is maintained constant unless the user is adjusted. Therefore, when the ambient sound becomes louder, the volume of the reproduced music also becomes louder and the reproduced volume becomes louder. Becomes excessive, causing problems such as the user feeling noisy. In order to prevent such a problem, a restriction is applied so that the music does not become loud from a certain external sound level, or the user adjusts the volume to make the music smaller, and the composition ratio adjustment process is sequentially performed. It has to be done, which reduces the comfort of the user's music listening.
  • the present disclosure has been made in view of the above problems, for example, from the headphone speaker while maintaining the relative level difference between the external sound felt by the user's drum membrane and the sound pressure of the music even if the external sound becomes loud. It provides an output sound control device, an output sound control method, and a program that enable control without making the output sound of the headphone excessive without user adjustment.
  • the first aspect of the disclosure is The external sound level is analyzed based on the input sound from the microphone that captures the external sound that is the ambient sound of the headphones, and the output sound that determines the playback external sound level output from the headphone speaker and the playback sound source level according to the analysis result.
  • Has a control unit The output sound control unit In the area where the external sound level is above the specified value, It is in the output sound control device that executes the playback external sound control process that suppresses the playback external sound level.
  • the second aspect of the present disclosure is This is an output sound control method executed by the output sound control device.
  • the output sound control unit The external sound level is analyzed based on the input sound from the microphone that captures the external sound that is the ambient sound of the headphones, and the output sound that determines the playback external sound level output from the headphone speaker and the playback sound source level according to the analysis result.
  • Execute control processing The output sound control unit In the area where the external sound level is above the specified value, There is an output sound control method that executes playback external sound control processing that suppresses the playback external sound level.
  • the third aspect of the present disclosure is A program that executes output sound control processing in the output sound control device.
  • the output sound control unit The external sound level is analyzed based on the input sound from the microphone that captures the external sound that is the ambient sound of the headphones, and the output sound that determines the playback external sound level output from the headphone speaker and the playback sound source level according to the analysis result.
  • Execute control processing The program is applied to the output sound control unit. In the area where the external sound level is above the specified value, It is in the program that executes the playback external sound control process that suppresses the playback external sound level.
  • the program of the present disclosure is, for example, a program that can be provided by a storage medium or a communication medium that is provided in a computer-readable format to an information processing device or a computer system that can execute various program codes.
  • a program that can be provided by a storage medium or a communication medium that is provided in a computer-readable format to an information processing device or a computer system that can execute various program codes.
  • system is a logical set configuration of a plurality of devices, and the devices having each configuration are not limited to those in the same housing.
  • the reproduced sound source and the outside while maintaining the relative level difference between the reproduced sound source such as music felt by the user's drum membrane and the sound pressure of the external sound.
  • a device and a method for executing output sound control that reduces the total amount of sound pressure of sound are realized.
  • the external sound level is analyzed based on the input sound from the microphone that captures the external sound that is the ambient sound of the headphones, and the reproduced external sound level output from the headphone speaker and the reproduced sound source according to the analysis result. It has an output sound control unit that determines the level.
  • the output sound control unit suppresses the reproduced external sound level in the region where the external sound level is equal to or higher than the specified value, and further adjusts the reproduced sound source level so as to maintain the relative level difference from the external sound level felt by the eardrum.
  • the playback external sound level is set to a fixed level. Even if the playback external sound level is set to a fixed level, there is leakage noise that is transmitted to the eardrum through headphones and the head, so when the noise becomes loud, the external sound level that the user feels on the eardrum is To rise. Then, at this time, the same level as the increase in the external sound level felt by the user's eardrum is also increased in the reproduced sound source.
  • FIG. 1 shows a user 1 wearing headphones 10 and a playback device (user terminal) 20 owned by the user 1.
  • the connection between the headphones and the playback device may be wired or wireless.
  • the reproduced sound reproduced in the reproduction device (user terminal) 20, for example, music data is transmitted to the headphones 10 by wireless communication, and the music reproduction sound is output from the left and right (LR) speakers of the headphones.
  • the figure shows a type of headphone that covers the entire ear as the headphone 10, the process of the present disclosure can also be used for an inner type headphone that is inserted into the ear.
  • the headphones will be described as including both headphones of the type that covers the entire ear and headphones of the inner type.
  • the headphone 10 has a microphone for capturing external sound.
  • the user 1 wears the headphones 10 and listens to music, the user 1 can listen to the external sound captured by the microphone together with the music through the headphone speaker without blocking the external sound (ambient sound).
  • a problem with headphones having such an external sound capturing function is that when the volume of the external sound is increased, it becomes difficult to hear the reproduced music. This problem will be described with reference to FIG.
  • the horizontal axis shows the external sound level of the noise generated around the user
  • the vertical axis shows the level of the eardrum listening sound of the user wearing headphones.
  • the unit of both the vertical axis and the horizontal axis is [dBSPL], which represents sound pressure.
  • the example shown in FIG. 2 is an example in which the volume of the reproduced sound such as music is set to a constant level, specifically about 41 dBSPL, regardless of the volume of the external sound.
  • the graph shows a line (solid line) of the reproduced music having a constant volume (about 41 dBSPL) and a line (broken line) of the outside sound (reproduced outside sound + leaking outside sound).
  • the listening external sound includes the following two external sound elements.
  • Playback external sound captured by the microphone of the headphone 10 and output from the speaker of the headphone 10.
  • Leakage external sound that is transmitted through the headphones 10 and the head and is felt by the eardrum.
  • both (1) and (2) above become louder.
  • the level of the external sound heard by the headphone-wearing user increases.
  • the music reproduction volume is fixed at about 41 dBSPL.
  • the outside sound level rises and the outside sound (reproduced outside sound + leaking outside sound) rises to 40 dBSPL or more
  • the playback volume of the music is controlled to be raised in accordance with the rise of the outside sound level. It is a composition.
  • the timing for raising the playback volume of the music in accordance with the rise in the listening sound level is set to 40 dBSPL, but it does not have to be 40 dBSPL.
  • the playback volume of music is about 41 dBSPL, which is close to 40 dBSPL, it is easy to misunderstand, but the control timing is a value that varies depending on the design, and 40 dBSPL is an example.
  • the listening external sound (reproduced external sound + leaking external sound) is set so as to increase the eardrum listening sound level on the vertical axis in proportion to the increase in the external sound level on the horizontal axis.
  • the setting of the amplifier that determines the level of the reproduced external sound is a fixed gain.
  • the playback volume of the music is also raised from the position of about 41 dBSPL by the same level as the rise of the outside sound.
  • the music reproduction volume is 50 dBSPL
  • the music reproduction volume is increased by the same level as the increase in the non-listening sound based on the position of 40 dBSPL. That is, from a position where the external sound level is 40 dBSPL or higher, the listening reproduced music and the listening external sound have a parallel positional relationship regardless of the playback volume of the music.
  • the output sound control device of the present disclosure makes the output sound from the headphone speaker excessive while maintaining the relative level difference between the music playback sound and the listening external sound perceived by the user's eardrum even when the external sound level rises. Perform control that you do not have to do. That is, the user does not need to adjust the volume of the music caused by the external sound, and reduces the possibility of making the user feel the reproduced sound noisy.
  • the horizontal axis shows the voice level of the external sound of the noise generated around the user
  • the vertical axis shows the level of the eardrum listening sound of the user wearing headphones. It is a graph.
  • the unit of both the vertical axis and the horizontal axis is [dBSPL].
  • FIG. 4 shows the following four lines.
  • A Playback external sound (dashed line)
  • B Leakage external sound (dotted line)
  • D Playback music (thin solid line)
  • the reproduced external sound is not increased according to the increase in the external sound level on the horizontal axis as in the example of FIG. 3 described above, but on the horizontal axis.
  • a certain specified value 40 dBSPL in the example shown in FIG. 4
  • the process of lowering the gain of the amplifier that determines the level of the reproduced external sound by the amount of increase in the external sound level is performed. That is, when the external sound level is equal to or higher than the specified value, (a) is a control example in which the control for fixing the eardrum listening sound level of the reproduced external sound is executed.
  • the external sound level is 40 dBSPL or higher, which is a specified value
  • the specified value of the external sound level is set to 40 dBSPL, but this is an example and can be changed to various values.
  • the specified value of the external sound level may be set to 35 dBSPL, 45 dBSPL, 50 dBSPL, or the like.
  • This specified value is a design value that varies depending on the system, such as the sound insulation characteristics of headphones and the noise characteristics of music players.
  • This volume level is the level shown in (d) the line (thin solid line) of the reproduced music shown in FIG.
  • the user can listen to the music while always maintaining the relative level difference between (d) the reproduced music and (c) the listening external sound even if the loudness of the noise, which is the external sound level, changes. Does not need to adjust the volume of music caused by external sounds.
  • the output sound control device of the present disclosure performs control as follows.
  • the user can listen to (d) the reproduced music while (c) maintaining the relative level difference from the outside sound.
  • the relative level difference from the non-listening sound can be changed by adjusting the volume of the reproduced music of the user. For example, when the user adjusts the reproduced music so that it sounds 5 dB louder than the outside sound by adjusting the volume of the reproduced music, even if the noise becomes noisy, the level is always 5 dB louder than the noise in a noise environment above the specified value. Since the music is adjusted so that it can be heard, the user does not need to make a volume adjustment due to noise.
  • (Effect 2) (e) It is possible to suppress an excessive increase in the total listening sound. In other words, it is possible to reduce the stress on noise when listening to music while grasping the ambient sound.
  • the example shown in FIG. 4 is an example in which (d) the initial set volume level of the reproduced music is set to about 41 dBSPL, but as described above, the initial set volume level of the (d) reproduced music varies depending on the user. It can be set to a level.
  • FIG. 5 shows a graph for explaining (d) the change in the eardrum listening sound level according to the change in the external sound level of the reproduced music when (d) the initial setting volume level of the reproduced music is changed.
  • (d) the default volume level of the reproduced music is shown.
  • (D1) 30 dBSPL,
  • (D2) Approximately 41 dBSPL (D3) 50dB SPL,
  • (D) The change in the eardrum listening sound level according to the change in the external sound level of the reproduced music is shown.
  • the suppression start point of the reproduced external sound is a fixed external sound level, for example, 40 dBSPL.
  • the line of (a) reproduced external sound shown in FIG. 6 is set to increase in accordance with the external sound level until the external sound level shown on the horizontal axis reaches the specified value (40 dBSPL), and the level of the reproduced external sound is increased.
  • the gain of the determined amplifier is fixed. This is the same as the embodiment described above with reference to FIGS. 4 and 5.
  • the line of (a) reproduced external sound shown in FIG. 6 is a region where the external sound level shown on the horizontal axis is equal to or higher than the specified value (40 dBSPL), as in the embodiment described above with reference to FIGS. 4 and 5.
  • the eardrum listening sound level is not fixed at about 38 dBSPL, but is set to increase as the external sound level rises. However, in the region where the external sound level is equal to or higher than the specified value (40 dBSPL), the amount of increase in the eardrum listening sound level is set smaller than the amount of increase in the external sound level.
  • the user-configurable configuration may be used as to how small the increase amount of the eardrum listening sound level is set with respect to the increase amount of the external sound level. For example, control according to user input via a UI (user interface) for changing the adjustment amount is executed.
  • UI user interface
  • the output sound control shown in FIG. 6 is an example in which the following control is performed.
  • control 2 is the same control as in the embodiment described above with reference to FIGS. 4 and 5.
  • FIG. 7 Another control example will be described with reference to FIG. 7.
  • the line of (a) reproduced external sound shown in FIG. 7 is set to increase in accordance with the external sound level until the external sound level shown on the horizontal axis reaches the specified value (40 dBSPL), and the level of the reproduced external sound is increased.
  • the gain of the determined amplifier is fixed. This is the same as the embodiment described above with reference to FIGS. 4 and 5.
  • the line of (a) reproduced external sound shown in FIG. 7 is a region where the external sound level shown on the horizontal axis is equal to or higher than the specified value (40 dBSPL), as in the embodiment described above with reference to FIGS. 4 and 5.
  • (A) The reproduction external sound level is not fixed to about 38 dBSPL, but is set to decrease as the external sound level rises. That is, the amount of decrease in the gain of the amplifier that determines the level of the reproduced external sound is made larger than the examples shown in FIGS. 4 and 5.
  • the user-configurable configuration may be used as to how much the amount of decrease in the eardrum listening sound level is set with respect to the amount of increase in the external sound level. For example, control according to user input via a UI (user interface) for changing the adjustment amount is executed.
  • UI user interface
  • the output sound control shown in FIG. 7 is an example in which the following control is performed.
  • control 2 is the same control as in the embodiment described above with reference to FIGS. 4 and 5.
  • FIG. 8 is a diagram showing a configuration example of the output sound control device 100 of the present disclosure.
  • Each component of the output sound control device 100 shown in FIG. 8 can be configured inside the headphone device.
  • configurations other than the microphone and the speaker may be configured in an external device such as a device capable of communicating with headphones, for example, a smartphone (smartphone).
  • the microphone 11L and the speaker 12L shown in FIG. 8 are a microphone and a speaker configured on the left ear side of the headphones worn by the user.
  • the microphone 11R and the speaker 12R are a microphone and a speaker configured on the right ear side of the headphones worn by the user.
  • the microphone may be a microphone for capturing external sound or a microphone for noise canceling, and the purpose of use of the microphone is not limited.
  • the sound source unit 101 is, for example, a supply unit for music or the like. This can be configured in various ways, such as a memory inside the output sound control device 100, a detachable SD card, an external memory such as a USB memory, or a receiver for distribution music provided from an external server, for example.
  • the sound source data supplied from the sound source unit 101 is subjected to a predetermined amplification process or the like by the sound source output adjustment amplifier 102, and is input to the addition unit 121.
  • the sound source output adjustment amplifier 102 generates a sound source output sound of a level determined by the sound source control amount determination unit 123 of the output sound control unit 120 and outputs it to the addition unit 121.
  • the addition unit 121 adds the reproduced sound such as music supplied from the sound source unit 101 and the external sound input from the external sound output adjustment amplifier 114, that is, the external sound acquired by the microphones 12L and 12R.
  • the external sound output adjusting amplifier 114 generates an external sound of a level determined by the external sound control amount determining unit 122 of the output sound control unit 120 and outputs it to the adding unit 121. The details of the external sound level control process of the output sound control unit 120 will be described later.
  • the reproduced sound such as music generated by the addition unit 121 and the addition result of the external sound are converted from digital data to analog data by the D / A conversion unit 122 and output to the speakers 12L and 12R via the drive circuit 123.
  • the sound output to the speakers 12L and 12R here is, for example, an output sound corresponding to the sum of (a) reproduced external sound and (d) reproduced music in the graph shown in FIG.
  • the external sound acquired by the microphones 11L and 11R is converted into digital data by the A / D conversion unit 112 after being subjected to a predetermined amplification process by the microphone amplifier 111.
  • the digital data of the external sound generated by the A / D conversion unit 112 is input to the filter 113 and the external sound analysis unit 121 of the external sound control unit 120.
  • dBSPL When handling audio digital data in units of dB, dBFS is used, but in the following description, the explanation will be given as dBSPL for the sake of simplicity. Normally, conversion such as 100 dBSPL ⁇ 0 dBFS is performed. The value of this conversion is a design value that differs depending on the system.
  • the filter 113 executes frequency characteristic filtering processing and the like so that the captured external sound can be heard naturally. For example, in consideration of the frequency characteristics of the microphones 11L and 11R, the sound insulation frequency characteristics when the headphones are attached, the frequency characteristics of the speakers 12L and 12R, etc., a filtering process for reproducing the frequency characteristics of the desired ambient sound is executed, and the filter result is obtained. Input to the external sound output adjustment amplifier 114.
  • the external sound output adjusting amplifier 114 generates an external sound of a level determined by the external sound control amount determination unit 122 of the output sound control unit 120 and outputs it to the addition unit 121.
  • the output sound control unit 120 includes an external sound analysis unit 121, an external sound control amount determination unit 122, and a sound source control amount determination unit 123.
  • the external sound analysis unit 121 inputs the external sound digital data captured by the microphones 11L and 11R and converted by the A / D conversion unit 122, executes the external sound analysis process, and determines the analysis result as the external sound control amount. Input to unit 122 and sound source control amount determination unit 123.
  • the external sound control amount determination unit 122 adjusts the reproduction level of the external sound based on the external sound analysis result of the external sound analysis unit 121. Specifically, for example, (a) an external sound output adjustment parameter for executing the output along the line of the reproduced external sound shown in FIG. 4, that is, a parameter used in the external sound output adjustment amplifier 114 is generated and outside. Output to the sound output adjustment amplifier 114.
  • the external sound output adjustment amplifier 114 adjusts the level of the reproduced external sound according to the external sound output adjustment parameter input from the external sound control amount determination unit 122. For example, the reproduced external sound along the line of (a) reproduced external sound shown in FIG. 4 is generated and output to the addition unit 121.
  • the sound source control amount determination unit 123 adjusts the reproduction level of the sound source based on the external sound analysis result of the external sound analysis unit 121. Specifically, for example, (d) the sound source output adjustment parameter for executing the output along the line of the reproduced music shown in FIG. 4, that is, the parameter used in the sound source output adjustment amplifier 102 is generated and the sound source output adjustment amplifier Output to 102.
  • the sound source output adjustment amplifier 102 adjusts the level of the reproduced sound source according to the sound source output adjustment parameter input from the sound source control amount determination unit 123. For example, (d) a sound source reproduction signal along the line of the reproduced music shown in FIG. 4 is generated and output to the addition unit 121.
  • the output sound control unit 120 includes an external sound analysis unit 121, an external sound control amount determination unit 122, and a sound source control amount determination unit 123.
  • the external sound analysis unit 121 includes an output sound control execution necessity determination unit 201 and an external sound level / reference level difference calculation unit 202.
  • the output sound control execution necessity determination unit 201 has an external sound level / reference level comparison unit 211.
  • the external sound analysis unit 121 is input with the external sound digital data captured by the microphones 11L and 11R and converted by the A / D conversion unit 122.
  • This external sound digital signal is first input to the output sound control execution necessity determination unit 201, and determines whether or not to control the output sound.
  • the output sound control execution necessity determination unit 201 determines whether or not to control the output sound.
  • various signal processing is required in order to effectively exert the present invention, such as averaging external sound digital data before being input to the output sound control execution necessity determination unit 201, but the essence of the invention Since it is different from the above, the description is omitted.
  • the output sound is controlled by (a) the reproduced external sound and (d) the reproduced music shown in FIG. (A)
  • the reproduced external sound corresponds to the signal finally output from the speaker through the external sound output adjusting amplifier 114 shown in FIGS. 8 and 9, and (d) the reproduced music is shown in FIGS. 8 and 9. It corresponds to the signal finally output from the speaker through the sound source output adjustment amplifier 102 shown.
  • the output sound control execution necessity determination unit 201 follows the process of the present disclosure. It is determined that it is necessary to execute the output sound control, and the external sound level value is output to the following external sound level / reference level difference calculation unit 202.
  • the level value of the external sound input from the microphones 11L and 11R is input to the external sound level / reference level difference calculation unit 202.
  • the difference value between the external sound level and the specified value (reference level) calculated by the external sound level / reference level difference calculation unit 202 is input to the external sound control amount determination unit 122 and the sound source control amount determination unit 123.
  • the external sound control amount determination unit 122 and the sound source control amount determination unit 123 determine the output sound level of the external sound and the output sound level of the sound source based on the input difference value.
  • FIG. 10 is a graph similar to FIG. 4 described above.
  • the input external sound level is 60 dBSPL.
  • the external sound control amount determining unit 122 controls so as to follow the line of (a) reproduced external sound shown in FIG. (A)
  • Eardrum listening sound level approx. 38 dBSPL Is shown.
  • the external sound level is increased from the specified value (40 dBSPL).
  • the level may be lowered by the external sound output adjusting amplifier 114. That is, in this example, since the difference from the specified value is 20 dB, the gain of the external sound output adjustment amplifier 114 may be lowered by 20 dB.
  • the sound source control amount determination unit 123 controls so as to follow the line of (d) reproduced music shown in FIG.
  • the gain difference due to the increase in the external sound (reproduced external sound + leaking external sound) from the specified value (40 dBSPL). Is realized by adding to the level of the reproduced music set by the user.
  • the audible external sound at the specified value (40 dBSPL) is 40 dBSPL
  • the audible external sound is about 47 dBSPL
  • Eardrum listening sound level sound source playback sound at a level equivalent to about 48 dBSPL
  • Eardrum listening sound level external sound reproduction sound at a level equivalent to about 38 dBSPL
  • the external sound control amount determination unit 122 determines the control amount so as to follow the line of (a) reproduced external sound as shown in any of FIGS. 4 to 7, and the sound source control amount determination unit 123 determines the control amount from FIGS. 4 to 4.
  • the control amount is determined so as to follow the line of the reproduced music as shown in any of FIG. 7. Further, for example, as described above with reference to FIGS. 6 and 7, (a) user input for adjusting the inclination of the playback external sound line is also possible, and if there is user input, the user input is input. The control amount is determined accordingly.
  • the user can listen to the external sound and the music while maintaining the relative level difference between the (c) listening external sound and (d) the reproduced music even when the external sound level becomes large, and further (e). )
  • the total listening sound can be lowered compared to the conventional technology. That is, it is not necessary for the user to adjust the volume caused by the external sound due to the fluctuation of the external sound level, and the noise can be reduced in a noisy environment, so that the stress of the user can be reduced.
  • the control amount of the reproduced external sound (external sound suppression curve) has been described as being controlled according to the external sound level, but the stress may increase depending on the user, for example. Therefore, it is assumed that you want to hear the outside sound as it is.
  • the system may input the user's request and do not suppress the external sound.
  • external sound may be suppressed.
  • a status determination unit is provided in the system, and the status determination unit receives information input from the sensor.
  • the situation determination unit is configured to determine and control whether the user wants to hear the external sound as it is even if he / she feels stress, or whether he / she wants to suppress the external sound in order to reduce the stress.
  • the outside sound should be suppressed so that the outside sound can be heard at the same volume even if the stress is increased. Stop.
  • the outside sound that the user wants to hear is, for example, an announcement. Analyze that it is the voice of the announcement, not the voice of the person who is talking nearby, analyze the behavior of the user, analyze that the announcement is related to the user, and analyze the external sound Determine if you want to stop the suppression.
  • FIG. 11 is an example of the hardware configuration of the output sound control device described in the above-described embodiment.
  • the CPU (Central Processing Unit) 301 functions as a control unit or a data processing unit that executes various processes according to a program stored in the ROM (Read Only Memory) 302 or the storage unit 308. For example, the process described in the above-described embodiment is executed.
  • the RAM (Random Access Memory) 303 stores programs and data executed by the CPU 301. These CPU 301, ROM 302, and RAM 303 are connected to each other by a bus 304.
  • the CPU 301 is connected to the input / output interface 305 via the bus 304, and the input / output interface 305 is connected to an input unit 306 including a microphone, a sensor, an operation unit, and an output unit 307 including a speaker.
  • the CPU 301 executes various processes according to the input information from the input unit 306, and outputs the process results to the output unit 307.
  • the storage unit 308 connected to the input / output interface 305 is composed of, for example, a hard disk or the like, and stores programs executed by the CPU 301 and various data.
  • the communication unit 309 is composed of a proximity communication unit such as NFC, Wi-Fi communication, Bluetooth (registered trademark) (BT) communication, and other communication units for data communication via a network such as the Internet or a local area network. Communicate with the device.
  • the drive 310 connected to the input / output interface 305 drives a removable medium 311 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory such as a memory card, and records or reads data.
  • a removable medium 311 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory such as a memory card
  • the technology disclosed in the present specification can have the following configuration.
  • (1) The external sound level is analyzed based on the input sound from the microphone that captures the external sound that is the ambient sound of the headphones, and the reproduced external sound level and the reproduced sound source level that are output from the speaker of the headphones are determined according to the analysis result.
  • Has an output sound control unit The output sound control unit In the area where the external sound level is above the specified value, An output sound control device that executes playback external sound control processing that suppresses the playback external sound level.
  • the output sound control unit is In the area where the external sound level is above the specified value, The output sound control device according to (1), which executes a playback sound source control process for changing the playback sound source level.
  • the output sound control unit is In the area where the external sound level is above the specified value,
  • the volume level of the external sound heard by the user wearing the headphones is the level of the volume obtained by adding the external sound for reproduction and the external sound for leakage.
  • the output sound control unit In the area where the external sound level is above the specified value, Set the playback sound source level to the default playback sound source level,
  • the output sound control device according to any one of (1) to (3), which executes a reproduction sound source control process for adding an increase in volume level from the specified value time point of the non-listening sound of the user wearing the headphones.
  • the output sound control unit is In the area where the external sound level is above the specified value, Instead of adjusting the playback external sound level to a fixed level
  • the output sound control device according to any one of (1) to (4), which executes a reproduction external sound control process for increasing the reproduction external sound level at an arbitrary ratio according to the increase in the external sound level.
  • the output sound control unit is In the area where the external sound level is above the specified value, Instead of adjusting the playback external sound level to a fixed level
  • the output sound control device according to any one of (1) to (5), which executes a reproduction external sound control process for lowering the reproduction external sound level at an arbitrary ratio according to an increase in the external sound level.
  • the output sound control device is The output sound control unit has an adder unit (1) to (1) to (1) to (1) to (1) to (1) to (1) to (1) to (1) to (1) to (1) to (1) to (1) to (1) to (1) to (1) 7) The output sound control device according to any one.
  • the output sound control device is An external sound output adjustment amplifier that generates a reproduced external sound of the reproduced external sound level determined by the output sound control unit, and The output sound control device according to any one of (1) to (8), which has a sound source output adjustment amplifier that generates a reproduced sound source of a reproduced sound source level determined by the output sound control unit.
  • the output sound control unit The external sound level is analyzed based on the input sound from the microphone that captures the external sound that is the ambient sound of the headphones, and the output sound that determines the playback external sound level output from the headphone speaker and the playback sound source level according to the analysis result. Execute control processing, The output sound control unit In the area where the external sound level is above the specified value, An output sound control method that executes playback external sound control processing that suppresses the playback external sound level.
  • a program that executes output sound control processing in the output sound control device In the output sound control unit, The external sound level is analyzed based on the input sound from the microphone that captures the external sound that is the ambient sound of the headphones, and the output sound that determines the playback external sound level output from the headphone speaker and the playback sound source level according to the analysis result. Execute control processing, The program is applied to the output sound control unit. In the area where the external sound level is above the specified value, A program that executes playback external sound control processing that suppresses the playback external sound level.
  • the series of processes described in the specification can be executed by hardware, software, or a composite configuration of both.
  • executing processing by software install the program that records the processing sequence in the memory in the computer built in the dedicated hardware and execute it, or execute the program on a general-purpose computer that can execute various processing. It can be installed and run.
  • the program can be pre-recorded on a recording medium.
  • LAN Local Area Network
  • the various processes described in the specification are not only executed in chronological order according to the description, but may also be executed in parallel or individually as required by the processing capacity of the device that executes the processes.
  • the system is a logical set configuration of a plurality of devices, and the devices having each configuration are not limited to those in the same housing.
  • a device and a method for executing output sound control that makes it easier to hear a reproduced sound source such as music are realized in a system for reproducing external sound.
  • the external sound level is analyzed based on the input sound from the microphone that captures the external sound that is the ambient sound of the headphones, and the reproduced external sound level output from the headphone speaker and the reproduced sound source according to the analysis result. It has an output sound control unit that determines the level.
  • the output sound control unit executes a control process that suppresses the reproduced external sound level in the region where the external sound level is equal to or higher than the specified value, and further changes the reproduced sound source level so as to maintain the relative level difference from the unlistened external sound. ..
  • the playback external sound level is set to a fixed level. This makes it possible to reduce the total amount of the external sound level and the music level while maintaining the relative gain difference between the external sound level and the music level heard by the user. With this configuration, in a system that reproduces external sound, a device and a method for executing output sound control that makes it easier to hear a reproduced sound source such as music are realized.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Stereophonic System (AREA)

Abstract

L'invention concerne un dispositif et un procédé qui permettent d'exécuter une commande sonore de sortie afin de faciliter l'écoute d'une source sonore reproduite, telle que de la musique, dans un système qui effectue une reproduction sonore externe. Le dispositif comprend une unité de commande sonore de sortie qui analyse un niveau sonore externe en fonction d'un son d'entrée provenant d'un microphone captant un son externe constituant un son autour d'écouteurs. Ensuite, l'unité de commande sonore de sortie, conformément à un résultat d'analyse, détermine un niveau sonore externe reproduit et un niveau de source sonore reproduit devant être émis par un haut-parleur du casque d'écoute. L'unité de commande sonore de sortie exécute un processus de commande afin de limiter le niveau sonore externe reproduit dans une région dans laquelle le niveau sonore externe est supérieur ou égal à une valeur spécifiée, et de changer le niveau de source sonore reproduit en un niveau auquel une différence de niveau relative, par rapport à un niveau sonore externe audible, est maintenue. Par exemple, un procédé de réglage du niveau sonore externe reproduit à un niveau fixe est exécuté.
PCT/JP2020/019417 2019-06-20 2020-05-15 Dispositif de commande sonore de sortie, procédé de commande sonore de sortie et programme WO2020255601A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112020002932.8T DE112020002932T5 (de) 2019-06-20 2020-05-15 Ausgangston-steuervorrichtung, ausgangston-steuerverfahren und programm

Applications Claiming Priority (2)

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JP2019-114254 2019-06-20
JP2019114254 2019-06-20

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WO2020255601A1 true WO2020255601A1 (fr) 2020-12-24

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120101819A1 (en) * 2009-07-02 2012-04-26 Bonetone Communications Ltd. System and a method for providing sound signals
US20150171813A1 (en) * 2013-12-12 2015-06-18 Aliphcom Compensation for ambient sound signals to facilitate adjustment of an audio volume
US20150280669A1 (en) * 2014-03-26 2015-10-01 Nokia Corporation Method and apparatus for sound playback control
US20170048609A1 (en) * 2015-08-10 2017-02-16 Hearing Lab Technology, LLC Multi-source audio amplification and ear protection devices

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7903826B2 (en) 2006-03-08 2011-03-08 Sony Ericsson Mobile Communications Ab Headset with ambient sound

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120101819A1 (en) * 2009-07-02 2012-04-26 Bonetone Communications Ltd. System and a method for providing sound signals
US20150171813A1 (en) * 2013-12-12 2015-06-18 Aliphcom Compensation for ambient sound signals to facilitate adjustment of an audio volume
US20150280669A1 (en) * 2014-03-26 2015-10-01 Nokia Corporation Method and apparatus for sound playback control
US20170048609A1 (en) * 2015-08-10 2017-02-16 Hearing Lab Technology, LLC Multi-source audio amplification and ear protection devices

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