WO2019082389A1 - Dispositif et programme de sortie de signal sonore - Google Patents

Dispositif et programme de sortie de signal sonore

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Publication number
WO2019082389A1
WO2019082389A1 PCT/JP2017/038947 JP2017038947W WO2019082389A1 WO 2019082389 A1 WO2019082389 A1 WO 2019082389A1 JP 2017038947 W JP2017038947 W JP 2017038947W WO 2019082389 A1 WO2019082389 A1 WO 2019082389A1
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WO
WIPO (PCT)
Prior art keywords
sound signal
sound
output device
unit
signal
Prior art date
Application number
PCT/JP2017/038947
Other languages
English (en)
Japanese (ja)
Inventor
磯崎　善政
Original Assignee
ヤマハ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ヤマハ株式会社 filed Critical ヤマハ株式会社
Priority to PCT/JP2017/038947 priority Critical patent/WO2019082389A1/fr
Publication of WO2019082389A1 publication Critical patent/WO2019082389A1/fr

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • 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

Definitions

  • the present invention relates to a sound signal output device and a program.
  • Patent Document 1 and Non-Patent Document 1 disclose ear protectors that attenuate sound.
  • the sound transmitted to the ear protector through the headband portion can be reduced. Moreover, according to the technique disclosed in Non-Patent Document 1, it is possible to reduce the frequency band that damages the ear. However, the use of such ear protectors and ear plugs causes a problem that live music can not be enjoyed.
  • One of the objects of the present invention is to provide a sound signal output device and program that outputs sound at a desired volume and a desired sound quality while protecting the ear from loud noise that damages the ear.
  • a sound signal output device acquires a first sound signal, and performs processing to invert the phase of at least the first sound signal based on the first sound signal to generate a cancellation signal.
  • Cancellation signal generation unit a sound quality adjustment unit for acquiring the first sound signal, adjusting a frequency characteristic of the first sound signal to generate a second sound signal, the cancel signal, and the second sound signal
  • a first combining unit that combines
  • the sound signal output device further includes a microphone that generates an external sound signal indicating the external sound based on an external sound, and the cancellation signal generation unit acquires the first sound signal based on the external sound signal.
  • the sound quality adjustment unit may include a sound quality control unit that controls adjustment of the frequency characteristic of the first sound signal.
  • the sound signal output device may further include a correction unit that corrects the second sound signal based on user information.
  • the sound signal output device may further include a reproduction sound signal acquisition unit that acquires a third sound signal, and a synthesis unit that synthesizes the third sound signal and the second sound signal.
  • the sound signal output device comprises: a reproduction sound signal acquisition unit for acquiring a third sound signal; a reproduction sound signal adjustment unit for adjusting a frequency characteristic of the third sound signal to generate a fourth sound signal;
  • the image processing apparatus may further include a second synthesis unit that synthesizes the sound signal and the fourth sound signal.
  • the sound quality adjustment unit may include a volume adjustment unit that adjusts the volume of the second sound signal according to the passage of time.
  • the sound signal output device may further include an operation unit that acquires the first sound signal and calculates a sound pressure based on the first sound signal, and a notification unit that notifies the user of the sound pressure. Good.
  • the sound signal output device may further include a sound volume adjustment unit that adjusts and outputs a magnitude of the second sound signal based on a sound volume adjustment instruction input from a user.
  • the sound signal output device may further include a driver unit that outputs a sound based on a synthesized signal obtained by synthesizing the cancel signal and the second sound signal.
  • a sound signal output device acquires a first sound signal, and performs processing to invert the phase of at least the first sound signal based on the first sound signal to generate a cancellation signal.
  • Cancellation signal generation unit, and a second sound signal generated by adjusting the frequency characteristic of the first sound signal and the cancel signal are acquired, and synthesis is performed to synthesize the cancel signal and the second sound signal And a unit.
  • a program causes a computer to acquire a first sound signal, performs a process of inverting the phase of at least the first sound signal based on the first sound signal, and outputs a cancel signal. Generating a first sound signal, adjusting a frequency characteristic of the first sound signal to generate a second sound signal, and combining the cancellation signal and the second sound signal.
  • a sound signal output device acquires a sound signal, reduces the volume of the sound signal, and adjusts and outputs the frequency characteristic of the sound signal.
  • the present invention it is possible to output the sound with the best sound quality and the optimum volume while protecting the ear from the explosive sound that damages the ear.
  • FIG. 1 is a view showing an example of a sound signal output apparatus according to an embodiment of the present invention.
  • the sound signal output device 100 will be described as a smartphone as shown in FIG.
  • the sound signal output device is a portable device such as a smartphone
  • headphones or earphones that output sound output from the sound signal output device are used.
  • the headphones or earphones can be wired / wirelessly connected to the sound signal output device.
  • the sound signal output device 100 shown in FIG. 1 can be wirelessly connected to the earphone 101 used by the user.
  • the sound signal output device 100 acquires an external sound by the microphone incorporated in the sound signal output device 100 or the earphone 101, reduces the volume of the acquired external sound, and adjusts and outputs the frequency characteristic of the acquired external sound.
  • the earphones 101 may be wireless earphones or headphones. As the earphones 101, canal type earphones and over-ear headphones having high sound insulation are preferable.
  • the earphone 101 may optionally be equipped with a controller (not shown).
  • FIG. 2 is a schematic diagram showing an example of the hardware configuration of the sound signal output device 100.
  • the sound signal output device 100 includes a control unit 201, a storage unit 203, a signal processing unit 205, and a microphone 207. These components are connected to one another via a bus 209.
  • the control unit 201 includes an arithmetic processing circuit such as a CPU.
  • the control unit 201 causes the CPU to execute the control program 219a stored in the storage unit 203 to realize various operations of the sound signal output device 100.
  • the storage unit 203 is a storage device such as a non-volatile memory and a hard disk.
  • the storage unit 203 stores a control program 219a for controlling various operations of the sound signal output device 100.
  • the control program 219a may be provided as stored in a computer readable recording medium such as a magnetic recording medium, an optical recording medium, a magneto-optical recording medium, or a semiconductor memory.
  • the sound signal output device 100 may be provided with a device for reading a recording medium.
  • the control program 219a may be downloaded via a network.
  • the storage unit 203 may optionally store reproduction sound data 219 b and a parameter setting table 219 c.
  • the reproduction sound data 219b and the parameter setting table 219c may be provided in a state of being stored in a computer readable recording medium such as a magnetic recording medium, an optical recording medium, a magneto-optical recording medium, or a semiconductor memory. It may be downloaded.
  • a computer readable recording medium such as a magnetic recording medium, an optical recording medium, a magneto-optical recording medium, or a semiconductor memory. It may be downloaded.
  • the reproduced sound data 219b and the parameter setting table 219c will be described in detail in a modification to be described later.
  • the signal processing unit 205 includes an amplifier, an A / D converter, a D / A converter, and the like. External sound from the environment around the sound signal output device 100 is converted into an electric signal by the microphone 207 and input to the signal processing unit 205, and is amplified by the amplifier in the signal processing unit 205. The amplified external sound is A / D converted and output to the control unit 201.
  • the signal processing unit 205 performs D / A conversion on a cancellation signal described later and an adjusted sound signal (corresponding to a second sound signal described later) generated in the control unit 201, and is output to the earphone 101.
  • the A / D converter and the D / A converter may be omitted.
  • the microphone 207 acquires an external sound of the environment around the sound signal output device 100, converts the acquired external sound into an electric signal, and outputs the electric signal to the signal processing unit 205.
  • the microphone 207 may be incorporated in the earphone 101 shown in FIG. 1 instead of the sound signal output device 100.
  • the sound signal output device 100 may include an operation unit 213, a display unit 215, and a communication interface (communication IF) 217 in addition to the above-described configuration.
  • the operation unit 213 is an operation button such as an operation button or a keyboard provided on a remote control or the like, and outputs a signal corresponding to the input operation to the control unit 201.
  • the display unit 215 is a display device such as a liquid crystal display or an organic EL display, and a screen based on control by the control unit 201 is displayed.
  • the operation unit 213 and the display unit 215 may be integrated to form a touch panel.
  • the communication IF 217 is connected to a communication line such as the Internet based on the control of the control unit 201 to transmit and receive information with an external device such as a server.
  • the communication IF 217 performs wired / wireless connection with the earphone 101 to transmit and receive information.
  • the function of the storage unit 203 may be realized by an external device that can communicate in the communication IF 217.
  • FIG. 3 is a block diagram showing a functional configuration of the sound signal output device 100 according to an embodiment of the present invention.
  • FIG. 4 is a block diagram showing the details of the functional configuration of the sound signal output device 100 according to an embodiment of the present invention. In FIG. 4, a part of the configuration shown in FIG. 3 is omitted.
  • the functional configuration described below is realized by any of the hardware described above.
  • the sound signal output device 100 includes an external sound acquisition unit 301, a cancellation signal generation unit 303, a D / A converter 305, a power amplifier 307, a sound quality adjustment unit 309, a D / A converter 311, a power amplifier 313, and a synthesis unit (first A synthesis unit) 315 is provided.
  • a synthesis unit first A synthesis unit 315
  • the processing executed by the control unit 201 may be digital processing.
  • the processing executed by the control unit 201 may be analog processing.
  • the D / A converter 305 and the D / A converter 311 may be omitted.
  • the external sound acquisition unit 301 acquires an analog first sound signal Senvi_a corresponding to the sound pressure of the external sound of the environment around the sound signal output device 100 from the microphone 207 and outputs the analog first sound signal Senvi_a to the cancellation signal generation unit 303.
  • the cancellation signal generation unit 303 includes a preamplifier 401, an A / D converter 403, and a cancellation signal generation circuit 405.
  • the acquired analog first sound signal Senvi_a is amplified by the preamplifier 401.
  • the amplified analog first sound signal Senvi_a is output to the A / D converter 403.
  • the A / D converter 403 A / D converts the input amplified analog first sound signal Senvi_a to generate a digital first sound signal Senvi_d.
  • the generated digital first sound signal Senvi_d is output to the cancellation signal generation circuit 405 and the sound quality adjustment unit 309.
  • the cancellation signal generation circuit 405 generates a cancellation signal Scancel_d for canceling the external sound based on the acquired digital first sound signal Senvi_d.
  • the digital cancellation signal Scancel_d is generated so as to have the opposite phase of the analog first sound signal Senvi_a when analog conversion is performed.
  • the cancellation signal generation circuit 405 outputs the generated digital cancellation signal Scancel_d to
  • the D / A converter 305 D / A converts the input digital cancellation signal Scancel_d to generate an analog cancellation signal Scancel_a.
  • the generated analog cancel signal Scancel_a is input to the power amplifier 307.
  • the power amplifier 307 amplifies the analog cancel signal Scancel_a.
  • the amplified analog cancel signal Scancel_a is output to the synthesis unit 315.
  • the sound quality adjustment unit 309 acquires the digital first sound signal Senvi_d output from the A / D converter of the cancellation signal generation unit 303.
  • the sound quality adjustment unit 309 adjusts the frequency characteristic of the acquired digital first sound signal Senvi_d.
  • the sound quality adjustment unit 309 includes an equalizer (adjustment unit) that adjusts the frequency characteristic of the digital first sound signal Senvi_d.
  • the sound quality adjustment unit 309 may have a plurality of equalizers that adjust the frequency characteristics of the sound signal in different predetermined frequency bands. As shown in FIG. 4, the sound quality adjustment unit 309 may have three parametric equalizers (PEQ) 407 a, 407 b, and 407 c.
  • the PEQ 407 a adjusts the frequency characteristics of the digital first sound signal Senvi_d in the low frequency range.
  • the PEQ 407 b adjusts the frequency characteristics of the digital first sound signal Senvi_d in the midrange.
  • the PEQ 407 c adjusts the frequency characteristics of the digital first sound signal Senvi_d in the high range.
  • the center frequency, the bandwidth to be adjusted, and the gain value are individually set in advance.
  • the digital second sound signal Sout_d in which the frequency characteristic of the digital first sound signal Senvi_d is adjusted for each frequency band so as to obtain the sound volume and the maximum amount of sound optimum for the user It is generated.
  • the number of equalizers in the sound quality adjustment unit 309 is not limited to three.
  • the digital second sound signal Sout_d generated by the sound quality adjustment unit 309 is output to the D / A converter 311.
  • the D / A converter 311 D / A converts the input digital second sound signal Sout_d to generate an analog second sound signal Sout_a.
  • the generated analog second sound signal Sout_a is input to the power amplifier 313.
  • the power amplifier 313 amplifies the analog second sound signal Sout_a.
  • the amplified analog second sound signal Sout_a is output to the synthesis unit 315.
  • the combining unit 315 combines the analog cancel signal Scancel_a and the analog second sound signal Sout_a.
  • the synthesized signal is output to a driver unit (not shown) of the earphone 101.
  • the cancellation signal generation unit 303 is the external sound of the environment around the sound signal output device 100 acquired via the microphone 207 A cancellation signal having an antiphase characteristic is generated.
  • the sound quality adjustment unit 309 adjusts the frequency characteristics of the external sound of the environment around the sound signal output device 100 so as to obtain the sound volume and the maximum amount of sound that are optimal for the user, and the adjusted sound signal (second sound Signal) to the synthesis unit 315.
  • the synthesizing unit 315 generates a synthesized signal by synthesizing the cancellation signal and the adjusted sound signal (second sound signal), and the sound signal output device 100 transmits the synthesized signal to the earphone 101 via the communication IF 217. Output.
  • the earphone 101 obtains a synthesized signal from the sound signal output device 100.
  • the acquired composite signal is converted into an acoustic wave by the driver unit of the earphone 101 and output.
  • the external sound Senvi of the environment around the sound signal output device 100 can be reduced or completely shielded.
  • the external sound of the environment around the sound signal output device 100 is adjusted to the desired volume and maximum sound quality Can be provided.
  • the sound signal output device of the present invention is a smartphone has been described.
  • the sound signal output device is an earphone or a headphone
  • the earphones or headphones canal type earphones and over-ear headphones having high sound insulation are preferable.
  • These earphones or headphones may be wired / wirelessly connectable to an audio player or the like.
  • FIG. 5 is a schematic view showing an example of the hardware configuration of the sound signal output device 500 according to the present embodiment.
  • the sound signal output device 500 includes a control unit 201, a storage unit 203, a signal processing unit 205, a microphone 207, and a driver unit 501. These components are connected to one another via a bus 209.
  • the microphone 207 may be provided to the sound signal output device 500 and an external device such as a smartphone capable of wired / wireless connection. In this case, the sound signal output device 500 may obtain an electrical signal corresponding to the external sound generated by the microphone 207 via the communication IF 217 optionally provided in the sound signal output device 500.
  • the sound signal output device 500 has the same configuration as the sound signal output device 100 according to the first embodiment except that the driver unit 501 is provided.
  • the operations and functions of the components of the sound signal output device 500 are substantially the same as the operations and functions of the components of the sound signal output device 100 described with reference to FIGS. .
  • the driver unit 501 of the sound signal output device 500 acquires the combined signal output from the combining unit 315 shown in FIG. 3, converts the combined signal into a sound wave, and outputs the sound wave. By outputting a sound wave based on the analog cancellation signal Scancel_a included in the synthesized signal, the external sound Senvi in the environment around the sound signal output device 500 can be reduced or completely shielded.
  • the external sound of the environment around the sound signal output device 500 can be provided by adjusting to the desired volume and maximum amount of sound quality.
  • the sound signal output device of the present invention is an earphone or a headphone.
  • the sound signal output device is not limited to earphones or headphones.
  • the sound signal output device may be an ear protector.
  • the sound signal output device of the present invention is an earphone or a headphone has been described.
  • another example of the case where the sound signal output device is an earphone or a headphone will be described.
  • FIG. 6 is a schematic view showing an example of the hardware configuration of the sound signal output device 600 according to the present embodiment.
  • the configuration of the sound signal output device 600 shown in FIG. 6 is the same as or similar to the configuration of the sound signal output device 100 according to the first embodiment shown in FIG. 2 or the sound signal output device 500 shown in FIG.
  • the same reference numerals will be assigned, and duplicate explanations will be omitted.
  • the sound signal output device 600 includes a control unit 201, a storage unit 203, a signal processing unit 205, a microphone 207, and a communication IF 217. These components are connected to one another via a bus 209.
  • the microphone 207 may be provided not in the sound signal output device 600 but in an external device such as a smartphone that can be connected to the sound signal output device 600 by wire or wireless.
  • the sound signal output device 600 is an earphone or a headphone having a noise canceling function.
  • the sound signal output device 600 generates a cancellation signal for reducing or completely shielding external sounds in the environment around the sound signal output device 600.
  • the sound signal output device 600 acquires, from an external device such as a smartphone, an adjustment sound signal generated by adjusting the frequency characteristic of the external sound in the environment around the sound signal output device 600, and combines it with the cancellation signal. Do.
  • the sound signal output device 600 converts the synthesized signal into a sound wave and outputs it.
  • control program 601a stored in the storage unit 203 of the sound signal output device 600 is different from the control program 219a stored in the storage unit 203 of the sound signal output device 100 according to the first embodiment.
  • a program for adjusting the frequency characteristics of the external sound of the environment around 600 is not included.
  • FIG. 7 is a block diagram showing a functional configuration of the sound signal output device 600 according to the present embodiment.
  • the sound signal output device 600 includes an external sound acquisition unit 301, a cancellation signal generation unit 303, a D / A converter 305, a power amplifier 307, an adjustment sound signal acquisition unit 701, a power amplifier 313, and a synthesis unit 315.
  • the external sound acquisition unit 301, the cancellation signal generation unit 303, the D / A converter 305, and the power amplifier 307 are the same as the configurations described in the first embodiment.
  • the adjustment sound signal acquisition unit 701 acquires, through the communication IF 217, an adjustment sound signal generated by adjusting the frequency characteristics of the external sound of the environment around the sound signal output device 600 in an external device such as a smartphone.
  • the cancellation signal generation unit 303 AD-converts the analog first sound signal Senvi_a acquired from the external sound acquisition unit 301 or the analog first sound signal Senvi_a.
  • the digital first sound signal Senvi_d is output to an external device such as a smartphone via the communication IF 217.
  • the external device such as a smartphone adjusts the frequency characteristics of the acquired external device digital first sound signal Senvi_d such as a smartphone to generate an adjustment sound signal.
  • the adjustment sound signal is acquired by the adjustment sound signal acquisition unit 701 of the sound signal output device 600 via the communication IF 217.
  • the adjustment sound signal may be a digital signal or an analog signal.
  • the sound signal output device 600 may include a D / A converter that performs DA conversion on the adjustment sound signal.
  • the synthesis unit 315 synthesizes the cancellation signal generated by the cancellation signal generation unit 303 and the adjustment sound signal acquired by the adjustment sound signal acquisition unit 701.
  • the synthesis unit 315 outputs a synthesized signal generated by synthesizing the cancel signal and the adjustment sound signal to the driver unit 501.
  • the external sound of the environment around the sound signal output device 600 can be at a desired volume and It can be adjusted to the maximum amount of sound quality and provided.
  • Modification 1 In the first embodiment, in the PEQ 407 a to PEQ 407 c of the sound quality adjustment unit 309, the center frequency, the adjustment bandwidth, and the gain value are individually set in advance, but the frequency at the center of PEQ, the adjustment band The width and gain value may be changed as appropriate.
  • a sound signal output device capable of appropriately changing the setting of the PEQ parameter of the sound quality adjustment unit will be described. In the following description, among the configurations in the second embodiment, the descriptions of the configurations similar to the first embodiment will be omitted.
  • FIG. 8 is a block diagram showing details of a functional configuration of the sound signal output device according to the first modification.
  • the sound signal output device of the modification 1 has the same configuration as that of the first embodiment except for the configuration of the sound quality adjustment unit.
  • a part of the configuration shown in FIG. 3 is omitted.
  • the functional configuration described below is realized by any of the hardware shown in FIG.
  • the sound quality adjustment unit 801 includes a sound quality control unit 803 and PEQ 805 a to PEQ 805 c.
  • the sound quality adjustment unit 801 controls each of the parameters of the PEQ 805a to PEQ 805c, that is, the center frequency, the bandwidth to be adjusted, and the gain value.
  • the sound quality control unit 803 may change each parameter of the PEQ 505 a to PEQ 505 c based on the sound quality adjustment instruction input from the user.
  • the user can input the sound quality adjustment instruction via the operation unit 213 or the communication IF 217 shown in FIG.
  • the sound quality adjustment instruction is an instruction for controlling each parameter of the PEQ 505 a to PEQ 505 c, that is, the center frequency, the adjusted bandwidth, and the gain value.
  • the sound quality control unit 803 can control each of the parameters of the PEQ 505 a to PEQ 505 c based on the sound quality adjustment instruction.
  • the sound quality control unit 803 controls the parameters of the PEQs 505a to PEQ 505c so that the sound volume of the sound signal output device is optimum for the user to obtain the optimum sound volume and the maximum sound quality.
  • the frequency characteristics of the external sound from the environment can be finely adjusted.
  • FIG. 9 is a block diagram showing the details of the functional configuration of the sound signal output apparatus according to the second modification of the present invention.
  • the sound signal output device according to the second modification has substantially the same configuration as that of the first modification except that the sound volume adjustment unit is provided will be described.
  • the functional configuration described below is realized by any of the hardware shown in FIG. About the same or similar composition as modification 1, the overlapping explanation is omitted.
  • the sound signal output device according to the second modification shown in FIG. 9 has the same configuration as that of the first variation shown in FIG. 8 except that it has a volume adjustment unit, but is not limited to this. is not.
  • the sound signal output device includes a volume adjuster 901.
  • the volume adjustment unit 901 adjusts the volume of the digital second sound signal Sout_d output from the sound quality adjustment unit 801, which is output to the D / A converter 311.
  • the sound quality adjustment unit 801 adjusts the volume of the digital second sound signal Sout_d according to the passage of time. For example, even if the volume is not a large volume, listening to for a long time may burden the hearing. Therefore, the sound quality adjustment unit 801 adjusts the volume of the digital second sound signal Sout_d to be reduced according to the elapsed time.
  • the sound signal output device may include a sound pressure calculation unit 903 and a notification unit 905.
  • the sound pressure calculation unit 903 obtains the analog first sound signal Senvi_a output from the preamplifier 401 of the cancellation signal generation unit 303, and calculates the sound pressure of the external sound Senvi.
  • the sound pressure calculator 903 calculates the sound pressure of the external sound Senvi based on the amplitude of the analog first sound signal Senvi_a.
  • the sound pressure calculation unit 903 outputs the calculated sound pressure of the external sound Senvi to the notification unit 905.
  • the notification unit 905 notifies the sound pressure of the external sound Senvi acquired by the sound pressure calculation unit 903 to the user of the sound signal output device.
  • the notification unit 905 may correspond to the display unit 215 shown in FIG.
  • the notification unit 905 can display the sound pressure of the external sound Senvi in a spectrum for each predetermined frequency band.
  • the user may check the sound pressure of the external sound Senvi displayed on the notification unit 905, and switch on / off the function of the volume adjustment unit 901. Also, the user may confirm the sound pressure of the external sound Senvi displayed on the notification unit 905, and determine the adjustment amount of the volume of the digital second sound signal Sout_d.
  • FIG. 10 is a block diagram showing details of the functional configuration of the sound signal output apparatus according to the third modification of the present invention.
  • the sound signal output device according to the third modification has the same configuration as that of the first modification except that the correction unit 1001 is included will be described.
  • the functional configuration described below is realized by any of the hardware shown in FIG. About the same or similar composition as modification 1, the overlapping explanation is omitted.
  • the sound signal output device according to the third modification shown in FIG. 10 has the same configuration as that of the first modification shown in FIG. 8 except that the correction unit 1001 is included, the present invention is not limited to this. is not.
  • the sound signal output device has a correction unit 1001.
  • the correction unit 1001 may have one or more equalizers (not shown).
  • the equalizer in the correction unit 1001 may be a parametric equalizer (PEQ).
  • PEQ parametric equalizer
  • the correction unit 1001 corrects the digital second sound signal Sout_d output from the sound quality adjustment unit 801.
  • the correction unit 1001 corrects the digital second sound signal Sout_d based on the parameter setting table 219c stored in the storage unit 203.
  • the parameter setting table 219c user information and parameter settings of the correction unit 1001 are associated.
  • gender and age of the user may be associated with parameter settings of the correction unit 1001.
  • the correction unit 1001 adjusts the frequency characteristic of the digital second sound signal Sout_d based on the parameter setting table 219c that defines the relationship between the age and the equalizer parameter setting according to the age.
  • the parameter setting table 219c may be separated by gender.
  • the parameter setting table 219 c is stored in the storage unit 203 of the sound signal output device.
  • the parameter setting table 219c may be stored in advance in the storage unit 203.
  • the parameter setting table 219 c may be downloaded from the outside via the communication IF 217 in accordance with the user's instruction, and may be stored in the storage unit 203.
  • the correction unit 1001 includes a storage unit (not shown)
  • the parameter setting table 219 c may be stored in the storage unit of the correction unit 1001.
  • FIG. 11 is a graph showing hearing threshold distribution (based on ISO 7029) according to age. Referring to FIG. 11, it can be seen that as the age of male and female increases, the audible range narrows. In particular, it can be seen that as we get older, the hearing ability for the sound in the high frequency band, that is, the high range, decreases.
  • the correction unit 1001 corrects the digital second sound signal Sout_d acquired from the sound quality adjustment unit 801 according to the age of the user who uses the sound signal output device.
  • the user can input the age of the user via the operation unit 213 or the communication IF 217 shown in FIG.
  • the user may enter gender as well as age.
  • the correction unit 1001 further adjusts the frequency characteristics of the digital second sound signal Sout_d according to the input age and sex of the user.
  • the equalizer parameters of the correction unit 1001 are controlled according to the input user's age and gender. For example, when the age of the input user is a predetermined age or more, at least one of the equalizer parameters of the correction unit 1001, that is, the center frequency, the bandwidth to be adjusted, and the gain value is changed according to the input age. Be done.
  • the parameter of the correction unit 1001 that corrects the frequency characteristic of the digital second sound signal Sout_d is set based on the information of the user to output the sound signal according to the hearing ability of the user who uses the sound signal output device. It is possible to finely adjust the frequency characteristics of the external sound of the environment around the device.
  • FIG. 12 is a block diagram showing the details of the functional configuration of the sound signal output apparatus according to the fourth modification of the present invention.
  • the sound signal output device according to the fourth modification has the same configuration as that of the first modification except that the sound signal output device according to the fourth modification includes the reproduced sound signal acquisition unit 1201 and the synthesis unit 1203 will be described.
  • the functional configuration described below is realized by any of the hardware shown in FIG. About the same or similar composition as modification 1, the overlapping explanation is omitted.
  • the sound signal output device according to the fourth modification shown in FIG. 11 has the same configuration as that of the first modification shown in FIG. 8 except that it has the reproduced sound signal acquisition unit 1201 and the combining unit 1203. Not limited to this.
  • the sound signal output device includes a reproduced sound signal acquisition unit 1201 and a synthesis unit 1203.
  • the reproduction sound signal acquisition unit 1201 acquires a reproduction sound signal Srep_a (third sound signal).
  • the reproduction sound signal Srep_a is a signal related to the reproduction sound output from the sound signal output device, and may be music data or the like.
  • Music data is stored in the storage unit 203 of the sound signal output device. For example, as illustrated in FIG. 2, the storage unit 203 is stored as reproduced sound data 219 b.
  • the reproduction sound data 219 b may be stored in advance in the storage unit 203.
  • the reproduced sound data 219 b may be downloaded from the outside via the communication IF 217 in accordance with the user's instruction, and may be stored in the storage unit 203.
  • the reproduction sound signal acquisition unit 1201 may download reproduction sound data from the outside via the communication IF 217 according to a user's instruction to acquire the reproduction sound signal Srep_a.
  • the reproduction sound signal acquisition unit 1201 outputs the acquired reproduction sound signal Srep_a to the synthesis unit 1203.
  • the synthesizing unit 1203 synthesizes the reproduced sound signal Srep_a acquired from the reproduced sound signal acquiring unit 1201 and the analog second sound signal Sout_a which is output from the sound quality adjusting unit 801 and D / A converted by the D / A converter 311.
  • the combined signal is input to the combining unit 315 (not shown in FIG. 12) via the power amplifier 313, combined with the analog cancellation signal Scancel_a, and output to the earphone driver unit.
  • an external sound adjusted to a desired volume and sound quality and a desired reproduced sound are released simultaneously with a sound wave based on a cancellation signal that reduces or shields an external sound from the environment around the sound signal output device. It can sound.
  • the frequency characteristic of the reproduction sound signal Srep_a acquired by the reproduction sound signal acquisition unit 1201 may be adjusted.
  • the sound signal output device may include a reproduction volume adjustment unit (not shown) that adjusts the frequency characteristic of the reproduction sound signal Srep_a acquired by the reproduction sound signal acquisition unit 1201.
  • the reproduction volume adjuster adjusts, for example, the frequency characteristic of the reproduction sound signal Srep_a so as to reduce the volume of the reproduction sound according to the elapsed time.
  • the reproduction volume adjustment unit may adjust the frequency characteristic of the reproduction sound signal Srep_a based on, for example, an instruction input from the user.
  • the reproduction volume adjuster may adjust the frequency characteristic of the reproduction sound signal Srep_a in accordance with the frequency characteristic of the analog second sound signal Sout_a output from the sound quality adjustment unit 801, for example.
  • the control program 219a executed in the sound signal output device described above may be provided by being recorded on a recording medium such as an optical disc, a semiconductor memory or the like, or may be provided by being downloaded via a network.
  • DESCRIPTION OF SYMBOLS 100 Sound signal output device, 101 ... Earphone, 201 ... Control part, 203 ... Storage part, 205 ... Signal processing part, 207 ... Microphone, 209 ... Bus, 213 ... Operation part, 215 ... Display part, 217 ... Communication IF, 219a, 601a ... control program, 219b ... reproduced sound data, 219c ... parameter setting table, 301 ... external sound acquisition unit, 303 ... cancellation signal generation unit, 305, 311 ... D / A converter, 309, 801 ...
  • sound quality adjustment unit 307, 313: power amplifier, 401: preamplifier, 403: A / D converter, 405: cancel signal generation circuit, 407a to 407c, 805a to 805c: PEQ, 501: driver unit, 701: adjustment sound signal acquisition unit, 803: ... Sound quality control unit 901 Volume adjustment unit 903 Sound pressure calculation unit 905 Knowledge unit, 1001 ... correction unit, 1201 ... reproduced sound signal acquisition unit, 1203 ... synthesis unit

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

Selon un mode de réalisation de la présente invention, le dispositif de sortie de signal sonore comprend : une unité de génération de signal d'annulation qui acquiert un premier signal sonore et, sur la base du premier signal sonore, génère un signal d'annulation en effectuant un traitement pour inverser au moins la phase du premier signal sonore ; une unité de réglage de qualité acoustique qui acquiert le premier signal sonore et génère un second signal sonore par réglage de la caractéristique de fréquence du premier signal sonore ; et une première unité de synthèse qui synthétise le signal d'annulation et le second signal sonore.
PCT/JP2017/038947 2017-10-27 2017-10-27 Dispositif et programme de sortie de signal sonore WO2019082389A1 (fr)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012063483A (ja) * 2010-09-15 2012-03-29 Audio Technica Corp ノイズキャンセルヘッドホン及びノイズキャンセルイヤーマフ
JP2012169839A (ja) * 2011-02-14 2012-09-06 Sony Corp 音声信号出力装置、音声信号出力方法
JP2015173369A (ja) * 2014-03-12 2015-10-01 ソニー株式会社 信号処理装置、信号処理方法、およびプログラム
WO2016002358A1 (fr) * 2014-06-30 2016-01-07 ソニー株式会社 Dispositif de traitement d'informations, procédé de traitement d'informations et programme
JP2016015585A (ja) * 2014-07-01 2016-01-28 ソニー株式会社 信号処理装置、信号処理方法及びコンピュータプログラム
JP2016213845A (ja) * 2016-06-17 2016-12-15 ソニー株式会社 信号処理装置、信号処理方法
JP2017175332A (ja) * 2016-03-23 2017-09-28 ヤマハ株式会社 耳装着音響再生装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012063483A (ja) * 2010-09-15 2012-03-29 Audio Technica Corp ノイズキャンセルヘッドホン及びノイズキャンセルイヤーマフ
JP2012169839A (ja) * 2011-02-14 2012-09-06 Sony Corp 音声信号出力装置、音声信号出力方法
JP2015173369A (ja) * 2014-03-12 2015-10-01 ソニー株式会社 信号処理装置、信号処理方法、およびプログラム
WO2016002358A1 (fr) * 2014-06-30 2016-01-07 ソニー株式会社 Dispositif de traitement d'informations, procédé de traitement d'informations et programme
JP2016015585A (ja) * 2014-07-01 2016-01-28 ソニー株式会社 信号処理装置、信号処理方法及びコンピュータプログラム
JP2017175332A (ja) * 2016-03-23 2017-09-28 ヤマハ株式会社 耳装着音響再生装置
JP2016213845A (ja) * 2016-06-17 2016-12-15 ソニー株式会社 信号処理装置、信号処理方法

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