WO2015190160A1 - オーディオシステム、オーディオ装置、携帯端末装置、及びオーディオ信号制御方法 - Google Patents

オーディオシステム、オーディオ装置、携帯端末装置、及びオーディオ信号制御方法 Download PDF

Info

Publication number
WO2015190160A1
WO2015190160A1 PCT/JP2015/060045 JP2015060045W WO2015190160A1 WO 2015190160 A1 WO2015190160 A1 WO 2015190160A1 JP 2015060045 W JP2015060045 W JP 2015060045W WO 2015190160 A1 WO2015190160 A1 WO 2015190160A1
Authority
WO
WIPO (PCT)
Prior art keywords
audio
audio signal
volume
sound
unit
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2015/060045
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
康雄 高須
福島　浩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
D&M Holdings Inc
Original Assignee
D&M Holdings Inc
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 D&M Holdings Inc filed Critical D&M Holdings Inc
Priority to EP15806556.5A priority Critical patent/EP3157169B1/en
Priority to US15/317,747 priority patent/US10026416B2/en
Publication of WO2015190160A1 publication Critical patent/WO2015190160A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0324—Details of processing therefor
    • G10L21/034—Automatic adjustment
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/02—Remote control of amplification, tone or bandwidth
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/002—Control of digital or coded signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers

Definitions

  • the present invention relates to an audio system, an audio device, a mobile terminal device, and an audio device that amplifies and outputs an audio signal, and a mobile terminal device that sets the volume or sound quality of the audio signal output from the audio device via a wireless network, And an audio signal control method.
  • an audio device that receives an audio signal from a playback device that reproduces an audio signal using a wireless network system, amplifies the received audio signal, and outputs the received audio signal is known (for example, Patent Documents). 1))).
  • a mobile terminal device such as a mobile phone is connected to the above-described audio device via a wireless network, and the audio device receives an audio signal transmitted from the mobile terminal device, amplifies the audio signal, and then from a speaker.
  • An audio system including an audio device that outputs data and a mobile terminal device is known. Such a conventional audio system can remotely and arbitrarily change the selection of the music of the audio signal output from the audio device and the adjustment of the volume by operating the portable terminal device.
  • An audio system that transmits and receives audio signals using such a wireless network system does not need to connect the playback device and the speaker device with a signal cable as in the past, so there is no need to fix the installation location of the audio device.
  • the ambient environmental sound differs depending on the location where the audio device is installed. For example, if the installation location of an audio device installed in an indoor living room is changed to the kitchen, and the user wants to listen to the audio signal in the kitchen, the same volume as that used in the living room until then. If you listen to the audio signal in the room, the ambient sound such as the operation sound of the kitchen ventilation fan and refrigerator will increase from the living room, so the audio signal will be output at the same volume as when the audio device was installed in the living room. Even when listening, the audio signal may be difficult to hear due to ambient environmental sounds. In such a case, the user must adjust the volume of the audio signal to be output from the audio device every time the place where the audio device is installed is changed, and this volume adjustment work becomes very troublesome.
  • the conventional audio system can easily change the installation location of the audio device, but forgets to check the outdoor environment of the installed room, and the audio signal may leak to the outdoors. May increase.
  • the present invention provides an audio system for amplifying and outputting an audio signal and an audio system comprising a portable terminal device for setting the volume or sound quality of the audio signal output from the audio device via a wireless network. It is an object of the present invention to provide an audio system that can be set to an appropriate volume or sound quality.
  • the present invention relates to an audio system comprising one or a plurality of audio devices that amplify and output an audio signal and a portable terminal device that sets the volume or sound quality of the audio signal output from the audio device via a wireless network.
  • a microphone unit for collecting sound waves; and a volume or sound quality of an audio signal amplified by the audio device based on the sound waves collected by the microphone unit; and information on the volume or sound quality of the set audio signal Information on setting of volume or sound quality of audio signal, portable terminal device provided with transmission section for transmitting to apparatus, amplification section for amplifying audio signal, control section for adjusting volume or sound quality of audio signal by said amplification section
  • an audio device comprising a receiving unit for receiving from the portable terminal device The control unit, and controls the amplifying unit to adjust the volume or sound quality of audio signals based on the volume or the information of the quality of the setting of the audio signal received by the reception unit.
  • the present invention provides an audio device that amplifies and outputs an audio signal, and includes an amplifying unit that amplifies the audio signal, and a control unit that sets a volume or a sound quality of the audio signal by the amplifying unit,
  • the volume of the audio signal is set based on the information on the volume or the sound quality of the audio signal received by the receiving unit via the wireless network from the portable terminal device that sets the volume or the sound quality of the audio signal based on the surrounding sound wave.
  • the amplification unit is controlled to adjust the sound quality.
  • the present invention also relates to a portable terminal device that sets the volume or sound quality of an audio signal output from one or more audio devices via a wireless network, and a microphone unit that collects surrounding sound waves and the microphone unit
  • a transmission unit configured to set a volume or sound quality of an audio signal to be amplified by the audio device based on a sound wave that has been sounded, and to transmit information on the volume or sound quality of the set audio signal to the audio device; .
  • the present invention also relates to an audio signal control method for controlling the volume or sound quality of an audio signal output from one or a plurality of audio devices, and detects the level or frequency characteristics of ambient sound waves collected by the microphone of the mobile terminal device. Setting the volume or sound quality of the audio signal amplified by the audio device based on the detected sound wave level or frequency characteristics, and setting the volume or sound quality setting information of the set audio signal to the audio It is characterized by including the step which controls to transmit to an apparatus.
  • an audio signal to be listened to in an audio system comprising an audio device that amplifies and outputs an audio signal and a mobile terminal device that sets the volume or quality of the audio signal output from the audio device via a wireless network Can be automatically set to an appropriate volume or sound quality.
  • the audio device 2 is installed indoors, and a user who is in the same room as the audio device 2 outputs the audio device 2 while operating the operation unit 14 while holding the mobile terminal device 1.
  • the audio device 2 is installed indoors as shown in FIG. 2, and the environmental sound of the audio signal output from the audio device 2 is taken into account when the user is in the same indoor room as the audio device 2.
  • FIG. 1 is a block diagram showing a configuration of an audio system according to an embodiment of the present invention.
  • the audio system according to the present embodiment includes an audio device and a mobile terminal device.
  • the audio device is a general-purpose audio device that amplifies and outputs an audio signal input from the outside by an input terminal or wirelessly.
  • the mobile terminal device 1 includes a communication unit 11, a control unit 12, an audio signal recording unit 13, an operation unit 14, a display unit 15, and an application recording unit 16.
  • the communication unit 11 performs information communication with other devices such as the audio device 2 by wireless communication means such as Wi-Fi (Wi-Fi, Wireless Fidelity).
  • Wi-Fi Wi-Fi, Wireless Fidelity
  • the wireless communication means using Wi-Fi is used as the mutual information communication means between the devices.
  • a wired communication means may be used.
  • Various wireless communication means such as (registered trademark) and infrared communication may be used.
  • the control unit 12 controls the entire mobile terminal device 1 such as the communication unit 11, the audio signal recording unit 13, the operation unit 14, the display unit 15, and the application recording unit 16.
  • the application recording unit 16 records application software (Application software) input via communication means by the communication unit 11 or a signal input unit (not shown).
  • the display unit 15 displays information and various selection keys according to the activated software.
  • the operation unit 14 includes a touch panel. When various selection keys are touched, the operation unit 14 detects that the selection key has been selected and outputs various selection signals to the control unit 12.
  • the audio signal recording unit 13 records an audio signal input via communication means by the communication unit 11 or a signal input unit (not shown).
  • the microphone unit 17 collects sound waves around the mobile terminal device 1, converts the collected sound into a sound signal, and outputs the converted sound signal to the control unit 12.
  • the control unit 12 transmits the sound signal output from the microphone unit 17 to the other mobile terminal device via the communication unit 11, and A sound signal input from another mobile terminal device via the communication unit 11 is output from a speaker (not shown).
  • the audio device 2 includes a communication unit 21, a control unit 22, an input unit 23, a reproduction unit 24, an amplification unit 25, a speaker 26, and an operation unit 27.
  • the communication unit 21 performs information communication with other devices such as the mobile terminal device 1 by wireless communication means such as Wi-Fi. For example, when the communication unit 21 receives an audio signal from the communication unit 11 of the mobile terminal device 1 by wireless communication means, the communication unit 21 outputs the received audio signal to the reproduction unit 24 via the control unit 22.
  • the input unit 23 is connected to an external playback device, inputs an audio signal output from the playback device, and outputs the input audio signal to the playback unit 24 via the control unit 22.
  • the operation unit 27 receives various operation instructions such as audio signal reproduction start, reproduction stop, volume adjustment, and sound quality adjustment from the user, and outputs the contents of the received operation instructions to the control unit 22.
  • the control unit 22 controls the entire audio device 2 such as the communication unit 21, the input unit 23, the reproduction unit 24, the amplification unit 25, and the operation unit 27.
  • the reproduction unit 24 reproduces the audio signal input from the communication unit 21 or the input unit 23 under the control of the control unit 22.
  • the amplifying unit 25 amplifies the audio signal reproduced by the reproducing unit 24 with the volume and sound quality instructed from the control unit 22, and outputs the amplified audio signal to the speaker 26.
  • the speaker 26 outputs the audio signal output from the amplifying unit 25 as a sound wave.
  • the control unit 12 controls the display unit 15 so that the display unit 15 displays the operation keys related to the operation of the audio device 2 when the application software related to the operation of the audio device 2 recorded in the application recording unit 16 is activated.
  • the operation unit 14 is controlled to receive an instruction regarding the operation of the audio device 2 by the operation unit 14.
  • the control unit 12 receives various instruction signals such as selection of a song of an audio signal by the audio unit 2, start of playback, stop of playback, change of the volume and quality of the audio signal, and the like by the operation of the operation unit 14.
  • the input various instruction signals are transmitted to the control unit 22 of the audio apparatus 2 through the communication unit 11 and the communication unit 21.
  • the control unit 22 of the audio device 2 reproduces the audio signal input from the communication unit 21 or the input unit 23 according to various instruction signals transmitted from the control unit 12 so as to select, start playback, and stop playback.
  • the control unit 24 is controlled, and the amplification unit 25 is controlled so as to adjust the amplification value and sound quality of the audio signal output to the speaker 26.
  • the audio system operates the operation unit 14 of the mobile terminal device 1 to select a song of an audio signal output from the audio device 2, start playback, stop playback, and adjust the volume and sound quality. Can be operated remotely.
  • FIG. 2 shows the audio system 2 according to the present embodiment, in which the audio device 2 is installed indoors and the user in the same indoor room as the audio device 2 operates the operation unit 14 while holding the mobile terminal device 1. It is a figure which shows the case where the audio signal output from is listened.
  • FIG. 3 illustrates an audio signal output from the audio device 2 in the audio system according to the present embodiment in a state where the audio device 2 is installed indoors as shown in FIG. It is a flowchart figure which shows the operation
  • “application software relating to volume and sound quality automatic setting considering environmental sounds” is recorded in advance in the application recording unit 16 of the mobile terminal device 1.
  • step S1 when “application software related to volume and sound quality automatic setting considering environmental sounds” recorded in the application recording unit 16 is activated by the mobile terminal device 1, the control unit 12 performs wireless communication using the communication unit 11 and the communication unit 21.
  • the control unit 22 of the audio device 2 is accessed via communication, and it is determined whether or not the audio device 2 is reproducing an audio signal (step S1). If it is determined in step S1 that the audio device 2 is not reproducing an audio signal, the control unit 12 first determines a certain time around the mobile terminal device 1 based on the sound signal collected by the microphone unit 17.
  • the average environmental sound level and the level distribution of environmental sound by frequency are detected as “environmental sound listening level” and “level distribution of environmental sound by frequency”, respectively (step S2).
  • the “level distribution of environmental sound by frequency” means, for example, the level distribution of noise concentrated in the extremely low frequency range generated by transportation or the like, and the specific frequency or high frequency range such as wind noise from a ventilation fan. This is a level distribution of unevenly distributed environmental sounds.
  • control unit 12 adjusts the volume level and frequency of the amplification unit 25 adjusted by the control unit 22 of the audio device 2.
  • the control unit 22 is controlled so as to set the level distribution (frequency characteristics) to “volume and sound quality considering the environmental sound level and level distribution by frequency” (step S3).
  • the amplification level of the audio signal amplified by the amplification unit 25 is detected as “environmental sound listening level”.
  • the setting change control is automatically performed so that the amplification value is larger by 30 dB.
  • the control unit 12 controls the control unit 22 so that the amplification level of the audio signal amplified by the amplification unit 25 becomes 40 dB.
  • the control unit 12 controls the control unit 22 so that the amplification level of the audio signal amplified by the amplification unit 25 becomes 60 dB.
  • control unit 12 controls the control unit 22 so that the output level of the frequency band that is high in the frequency band of the environmental sound among the audio signals amplified by the amplification unit 25 increases. In this way, by increasing the output level of the same frequency band as the band that was higher in the environmental sound frequency band in the output audio signal, the audio signal is masked to the environmental sound that is unevenly distributed in a specific band.
  • step S3 after setting “volume and sound quality considering environmental sound level and level distribution by frequency”, the process returns to step S1.
  • step S3 when the “sound volume and sound quality considering the environmental sound level and frequency level distribution by frequency” in step S3 is set, for example, when the environmental sound listening level is high, the audio signal is amplified according to the environmental sound listening level. Increase the value, and conversely, if the environmental sound listening level is low, reduce the amplification value of the audio signal according to the environmental sound listening level to prevent the surrounding sound from becoming difficult to hear. Can do. Further, in the detected “level distribution of environmental sound by frequency”, when the level of a specific frequency band is high, the audio signal amplified by the amplifying unit 25 has a frequency band having a high level in the environmental sound frequency band.
  • the low frequency part of the audio signal is temporarily masked by noise in the low frequency range due to vibration or noise. It is possible to correct the user's feeling that the sound becomes difficult to hear and the bass is insufficient, so that the user can continue to listen to music without feeling a large volume change. Become.
  • step S1 If it is determined in step S1 that the audio device 2 is reproducing an audio signal, the control unit 12 first determines a certain time around the mobile terminal device 1 based on the sound signal collected by the microphone unit 17. The average sound level and the level distribution by sound frequency are detected as “audio signal listening level including environmental sound” and “level distribution by frequency including environmental sound”, respectively (step S4). Next, the control unit 12 determines whether or not the “environmental sound listening level” and the “level distribution of environmental sound by frequency” in step S2 have been detected (step S5), and it is determined that they have not been detected. If so, the process returns to step S1.
  • step S5 If it is determined in step S5 that the “environmental sound listening level” and the “level distribution of environmental sound by frequency” in step S2 have been detected, the control unit 12 detects the detected “environmental sound listening level”, “environmental sound listening level”, The volume of the amplifying unit 25 adjusted by the control unit 22 of the audio device 2 based on the “level distribution by frequency of sound”, “listening level of audio signal including environmental sound” and “level distribution by frequency including environmental sound”. The control unit 22 is controlled to set the level distribution (frequency characteristics) for each level and frequency to “volume and sound quality taking into account the audio listening level including environmental sound and environmental sound and the level distribution for each frequency” (step S6). ).
  • volume setting “audio signal listening level including environmental sound” and “environmental sound”
  • the setting change is automatically controlled so that the amplification level of the audio signal amplified by the amplifying unit 25 becomes 30 dB larger than the detected “environmental sound listening level”.
  • the difference between the “audio signal listening level including the environmental sound” and the “environmental sound listening level” is smaller than 25 dB, the amplification level of the audio signal amplified by the amplifying unit 25 is detected.
  • the setting change is automatically controlled so that the amplified value is 35 dB larger than the “level”.
  • the “environmental sound listening level” is 10 dB
  • the “audio signal listening level including environmental sound” is 40 dB
  • the “audio signal listening level including environmental sound” and the “environmental sound listening level” are
  • the control unit 12 controls the control unit 22 so that the amplification level of the audio signal amplified by the amplification unit 25 becomes 40 dB which is an amplification value 30 dB larger than the “environmental sound listening level”.
  • the “environmental sound listening level” is 10 dB
  • the “audio signal listening level including environmental sound” is 30 dB
  • the difference between the “audio signal listening level including environmental sound” and the “environmental sound listening level” is from 25 dB.
  • the control unit 12 sets the amplification level of the audio signal amplified by the amplification unit 25 to an amplification value 35 dB larger than the “environmental sound listening level”. Controls the control unit 22 so as to be that 45 dB.
  • the control unit 12 Controls the control unit 22 so that the output level of the frequency band having a large level difference in the specific frequency band among the audio signals amplified by the amplification unit 25 increases.
  • the audio signal is added to the environmental sound unevenly distributed in the specific band. Further masking can be further prevented.
  • step S6 by setting the “volume and sound quality considering the environmental sound and the audio listening level including the environmental sound and the level distribution by frequency” in step S6, for example, in step S2, the amplification value of the audio signal by the amplifying unit 25 is set.
  • the sound quality is changed according to the ambient sound listening level and the level distribution for each frequency band, the distance between the audio device 2 and the user holding the mobile terminal device 1 is long, or the audio device 2 and the mobile phone Even if there is an obstacle between the user holding the terminal device 1 and the volume of the audio signal reaching the user is low or the sound quality changes, the “audio signal listening level including environmental sound” and “environmental sound” When the difference from the “listening level” is smaller than a predetermined value, that is, when the audio signal reaching the user is smaller than expected.
  • the level difference between the “level distribution by frequency of environmental sound” and the “level distribution by frequency including environmental sound” By increasing the output level of a large specific frequency band, it is possible to prevent the audio signal from being difficult to hear or the sound quality from being changed due to the distance or obstacle between the audio device 2 and the user holding the mobile terminal device 1. can do.
  • the audio system activates “application software related to automatic volume and sound quality setting considering environmental sound” recorded in the application recording unit 16 while the user holds the mobile terminal device 1.
  • the microphone unit 17 of the mobile terminal device 1 held by the user causes “environmental sound listening level”, “level distribution of environmental sound by frequency”, “audio signal listening level including environmental sound”, and Since it is possible to optimize the volume and sound quality of the audio signal by the amplifying unit 25 by detecting “level distribution by frequency including environmental sound”, it is not necessary for the user to manually adjust the volume and sound quality. Even when the installation position of the device 2 is changed, the volume and sound quality of the audio signal output from the audio device 2 can be adjusted. It is possible to dynamically appropriate volume and sound quality.
  • FIG. 4 is a flowchart showing the operations of the mobile terminal device 1 and the audio device 2 when performing automatic volume setting in consideration of the outdoor leakage level for the audio signal output from the audio device 2 in the audio system of the present embodiment. is there.
  • “application software relating to automatic volume setting in consideration of outdoor leakage level” is recorded in advance in the application recording unit 16 of the mobile terminal device 1.
  • step S8 the control unit 12 controls the control unit of the audio device 2 through wireless communication by the communication unit 11 and the communication unit 21. 22 is accessed to determine whether or not the audio apparatus 2 is reproducing an audio signal (step S9). If it is determined in step S9 that the audio device 2 is not reproducing an audio signal, the control unit 12 first determines a certain time around the mobile terminal device 1 based on the sound signal collected by the microphone unit 17. The average environmental sound level is detected as “outdoor level when audio is not reproduced” (step S10), and the process returns to step S9.
  • step S9 If it is determined in step S9 that the audio device 2 is playing back an audio signal, the control unit 12 first determines a certain time around the mobile terminal device 1 based on the sound signal collected by the microphone unit 17. The average environmental sound level is detected as “outdoor level during audio playback” (step S11). Next, the control unit 12 determines whether or not the “outdoor level when audio is not being played back” in step S10 has been detected (step S12). Return to S9.
  • step S12 If it is determined in step S12 that the “outdoor level when audio is not being reproduced” in step S10 has been detected, the control unit 12 detects the “outdoor level when audio is not being reproduced” and “ Based on the “outdoor level during playback of audio”, the control unit 22 is controlled so as to set the volume level of the amplification unit 25 adjusted by the control unit 22 of the audio apparatus 2 to “a volume level considering the outdoor leakage level”. (Step S13).
  • the amplifying unit 25 performs amplification.
  • the control for changing the setting of the audio signal amplification level is automatically performed so that the difference becomes smaller than 10 dB. In this case, for example, when the “outdoor level when audio is not being played back” is 10 dB and the “outdoor level during audio playback” is 18 dB, and the difference between the levels is less than 10 dB, the control is performed.
  • the unit 12 maintains the set amplification value of the amplification unit 25, while the “outdoor level when audio is not being played back” is 10 dB, and the “outdoor level during playback of audio” is 30 dB.
  • the control unit 12 automatically controls the setting change so that the amplification level of the audio signal amplified by the amplification unit 25 becomes smaller than 10 dB.
  • the audio signal output indoors leaks outdoors with a large volume, and the outdoor in a state where the audio signal is not reproduced. If the difference between the outdoor environmental sound level and the outdoor environmental sound level when the audio signal is reproduced indoors is greater than 10 dB, the outdoor environmental sound level when the audio signal is not automatically reproduced and By adjusting the volume of the audio signal so that the difference in outdoor environmental sound level when the audio signal is played indoors is less than 10 dB, a loud audio signal leaks as noise outside the room, It is possible to prevent inconvenience to neighboring residents.
  • the audio system activates “application software related to automatic volume setting considering outdoor leakage level” recorded in the application recording unit 16 while the user holds the portable terminal device 1.
  • “the outdoor level when audio is not being played back” and “the outdoor level when audio is being played back” are detected, and the amplification value by the amplifying unit 25 of the audio signal is lowered to a volume level that does not disturb the outdoor neighborhood.
  • the measurement of the environmental sound and the output measurement of the audio signal are performed by a general-purpose portable terminal device such as a smartphone or a portable personal computer. Therefore, it is necessary to prepare a measurement microphone necessary for acoustic measurement.
  • a general-purpose portable terminal device such as a smartphone or a portable personal computer. Therefore, it is necessary to prepare a measurement microphone necessary for acoustic measurement.
  • the configuration of the present embodiment can be realized inexpensively and easily.
  • the audio system of the present embodiment is configured to perform two automatic volume settings: the volume and sound quality automatic setting in consideration of the environmental sound described in FIG. 3, and the automatic volume setting in consideration of the outdoor leakage level described in FIG.
  • only one of them may be set automatically, or other automatic settings may be made according to various surrounding environments.
  • the audio device 2 A change in the listening level of the output audio signal per fixed time is measured by the microphone unit 17 of the portable terminal device 1, and the amplification value of the audio signal by the amplifying unit 25 is changed according to the measured change in the listening level. It is good also as a structure. Thereby, even if a user's position and direction change, a user can enjoy an audio signal comfortably without the audio signal output from the audio apparatus 2 becoming difficult to hear.
  • the configuration is such that the volume and sound quality of the audio signal output from the audio device 2 are automatically set by detecting the “signal listening level” and “level distribution by frequency including environmental sound”.
  • “environmental sound listening level” And only the volume of the audio signal output from the audio device 2 may be automatically set by detecting only the “audio signal listening level including environmental sound”, or “level distribution of environmental sound by frequency” or Only the sound quality of the audio signal output from the audio device 2 is detected automatically by detecting only “level distribution by frequency including environmental sound”. It may be.
  • the audio system of the present embodiment is configured to perform two automatic settings, the volume and sound quality automatic setting in consideration of the environmental sound described in FIG. 3, and the volume automatic setting in consideration of the outdoor leakage level described in FIG.
  • the configuration is not limited to such an automatic setting. For example, when a plurality of audio devices are installed around a room and a multi-channel surround audio signal output from the speakers of the plurality of audio devices is listened to, The volume level of the audio signal output from the speaker of each audio device and the arrival time of the audio signal are calculated by the microphone unit 17 of the mobile terminal device 1, and the audio signal output from each audio device is calculated based on the calculated value.
  • the volume level and the delay time of the audio signal output from each audio device can be A configuration may be adopted in which the correction value is automatically set by detecting the rhythm.
  • the volume level of audio signals and audio signals to be output from the speakers of each audio device can be obtained without preparing a microphone for measuring the sound field. It is possible to set so as to automatically correct the delay time until the audio signal output from the speaker of the apparatus reaches the user.
  • the audio system of the present embodiment is not limited to one audio device 2 as shown in FIG. 2, for example, two audio devices are installed around the room, and any microphone unit 17 of the mobile terminal device 1 can be used. It may be configured to automatically detect the sound quality or volume of the stereo audio signal output from the speakers of the two audio devices by detecting the surrounding environment, and two or more audio devices may be installed around the room. The sound quality or volume of the monaural audio signal output from the speakers of two or more audio devices or the individual audio signal output from the speakers of two or more audio devices is automatically adjusted. It is good also as a structure to set.
  • the present invention when performing automatic setting of sound volume and sound quality in consideration of environmental sound, “environmental sound listening level”, “level distribution of environmental sound by frequency”, “audio signal listening level including environmental sound” And “Level distribution by frequency including environmental sounds” and when performing automatic volume setting considering outdoor leakage level, “Outdoor level when audio is not being played” and “Audio being played” “Outdoor level” is configured to be detected.
  • the present invention is not limited to these detections, and any sound volume or frequency band is detected, such as detection of any listening level or level distribution of only a specific frequency band. It is good also as a structure.
  • the audio system records “application software related to automatic volume and sound quality setting considering environmental sound” and “application software related to automatic volume setting considering outdoor leakage level” in the application recording unit 16 of the mobile terminal device 1.
  • the application software may be recorded in the audio device 2 and the volume and sound quality may be adjusted on the audio device 2 side according to the sound measurement result by the mobile terminal device 1.
  • it is good also as a structure which reads the software previously recorded on the other apparatus in which information communication with the portable terminal device 1 or the audio apparatus 2 is read, and performs volume and sound quality control.
  • the audio system of the present embodiment is configured such that the user activates the application software when performing automatic volume and sound quality setting considering environmental sound and automatic volume setting considering outdoor leakage level, but the user activates the application software.
  • the GPS Global Positioning System
  • the application software may be activated to control the volume and sound quality of the audio signal.
  • the audio system of the present embodiment is configured such that the mobile terminal device 1 and the audio device 2 communicate with each other by Wi-Fi wireless communication means.
  • Wi-Fi wireless communication means Bluetooth (registered)
  • Various wireless or wired information communication means such as trademark (trademark), infrared communication, and HDMI (registered trademark) (High-Definition Multimedia Interface) may be used.
  • the present invention relates to an audio system, an audio device, a mobile terminal device, and an audio device that amplifies and outputs an audio signal, and a mobile terminal device that sets the volume or sound quality of the audio signal output from the audio device via a wireless network, And it can be usefully used for an audio signal control method.
  • SYMBOLS 1 Portable terminal device 11 Communication part, 12 Control part, 13 Audio signal recording part, 14 operation unit, 15 display unit, 16 application recording unit, 17 Microphone part, 2 audio devices, 21 communication unit, 22 control unit, 23 input unit, 24 playback unit, 25 amplification unit, 26 speaker, 27 operation unit, 30 users, 50 indoors, 51 outdoor

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Quality & Reliability (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Telephone Function (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Control Of Amplification And Gain Control (AREA)
PCT/JP2015/060045 2014-06-10 2015-03-31 オーディオシステム、オーディオ装置、携帯端末装置、及びオーディオ信号制御方法 Ceased WO2015190160A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15806556.5A EP3157169B1 (en) 2014-06-10 2015-03-31 Audio system, audio device, mobile terminal device and audio signal control method
US15/317,747 US10026416B2 (en) 2014-06-10 2015-03-31 Audio system, audio device, mobile terminal device and audio signal control method

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2014119512 2014-06-10
JP2014-119512 2014-06-10
JP2015047932A JP6497986B2 (ja) 2014-06-10 2015-03-11 オーディオシステム、オーディオ装置、携帯端末装置、及びオーディオ信号制御方法
JP2015-047932 2015-03-11

Publications (1)

Publication Number Publication Date
WO2015190160A1 true WO2015190160A1 (ja) 2015-12-17

Family

ID=54833269

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/060045 Ceased WO2015190160A1 (ja) 2014-06-10 2015-03-31 オーディオシステム、オーディオ装置、携帯端末装置、及びオーディオ信号制御方法

Country Status (4)

Country Link
US (1) US10026416B2 (https=)
EP (1) EP3157169B1 (https=)
JP (1) JP6497986B2 (https=)
WO (1) WO2015190160A1 (https=)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11356520B2 (en) * 2015-05-29 2022-06-07 Sound United, Llc. System and method for selecting and providing zone-specific media
TWM533386U (en) * 2016-08-16 2016-12-01 Unlimiter Mfa Co Ltd Electronic device capable of automatically adjusting volume
US10057716B1 (en) * 2017-04-18 2018-08-21 International Business Machines Corporation Monitoring a status of a disconnected device by a mobile device and an audio analysis system in an infrastructure
US10887688B2 (en) 2018-09-13 2021-01-05 Yamaha Corporation Audio signal processing apparatus, audio signal processing method, and storage medium that update currently used parameter upon receiving change operation instruction
JP7225855B2 (ja) * 2018-09-13 2023-02-21 ヤマハ株式会社 音信号処理装置、音信号処理方法およびプログラム
US11418267B2 (en) 2019-02-08 2022-08-16 Electronics And Telecommunications Research Institute Receiver for removing noise generated in human body communication
KR102314869B1 (ko) * 2019-02-08 2021-10-20 한국전자통신연구원 인체 통신에서 생성되는 노이즈를 제거하기 위한 수신기
CN111836166A (zh) * 2020-06-16 2020-10-27 钟杰东 一种移动通讯终端集成音频系统
US11900825B2 (en) * 2020-12-02 2024-02-13 Joytunes Ltd. Method and apparatus for an adaptive and interactive teaching of playing a musical instrument
US11972693B2 (en) 2020-12-02 2024-04-30 Joytunes Ltd. Method, device, system and apparatus for creating and/or selecting exercises for learning playing a music instrument
US11893898B2 (en) 2020-12-02 2024-02-06 Joytunes Ltd. Method and apparatus for an adaptive and interactive teaching of playing a musical instrument
US11670188B2 (en) 2020-12-02 2023-06-06 Joytunes Ltd. Method and apparatus for an adaptive and interactive teaching of playing a musical instrument
US12243437B2 (en) 2020-12-02 2025-03-04 Simply Ltd. Crowd-based device configuration selection of a music teaching system
CN113190207B (zh) * 2021-04-26 2024-11-22 北京小米移动软件有限公司 信息处理方法、装置、电子设备及存储介质
US11540052B1 (en) * 2021-11-09 2022-12-27 Lenovo (United States) Inc. Audio component adjustment based on location

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011024046A (ja) * 2009-07-16 2011-02-03 Fujitsu Toshiba Mobile Communications Ltd 情報処理装置
JP2013216427A (ja) * 2012-04-06 2013-10-24 Toshiba Elevator Co Ltd エレベータ報知音量制御装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0641227U (ja) * 1992-11-05 1994-05-31 アルパイン株式会社 オートボリュームコントロール装置
JPH10234099A (ja) 1997-02-19 1998-09-02 Sony Corp スピーカ装置
JP3352946B2 (ja) * 1998-06-30 2002-12-03 松下電器産業株式会社 適応音質音量制御装置
US6584201B1 (en) * 1998-07-07 2003-06-24 Lucent Technologies Inc. Remote automatic volume control apparatus
JP2007500466A (ja) * 2003-07-28 2007-01-11 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 音声調整装置、方法及びコンピュータプログラム
WO2006058361A1 (en) * 2004-12-04 2006-06-08 Dynamic Hearing Pty Ltd Method and apparatus for adaptive sound processing parameters
KR100800725B1 (ko) * 2005-09-07 2008-02-01 삼성전자주식회사 이동통신 단말의 오디오 재생시 주변 잡음에 적응하는 자동음량 조절 방법 및 장치
EP1977508A2 (en) * 2006-01-25 2008-10-08 TC Electronic A/S Auditory perception controlling device and method
JP4894342B2 (ja) * 2006-04-20 2012-03-14 パナソニック株式会社 音響再生装置
WO2008081403A1 (en) * 2006-12-29 2008-07-10 Grundig Elektronik Anonim Sirketi A method for reducing noise

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011024046A (ja) * 2009-07-16 2011-02-03 Fujitsu Toshiba Mobile Communications Ltd 情報処理装置
JP2013216427A (ja) * 2012-04-06 2013-10-24 Toshiba Elevator Co Ltd エレベータ報知音量制御装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3157169A4 *

Also Published As

Publication number Publication date
JP2016015711A (ja) 2016-01-28
US20170117003A1 (en) 2017-04-27
EP3157169A4 (en) 2018-02-28
EP3157169A1 (en) 2017-04-19
US10026416B2 (en) 2018-07-17
EP3157169B1 (en) 2025-09-24
JP6497986B2 (ja) 2019-04-10

Similar Documents

Publication Publication Date Title
JP6497986B2 (ja) オーディオシステム、オーディオ装置、携帯端末装置、及びオーディオ信号制御方法
JP7662863B2 (ja) システム応答ボリュームの動的計算
KR101251626B1 (ko) 스마트 기기를 이용한 음향기기의 특성에 대한 보상 서비스 제공 방법
JP2016015711A5 (https=)
CN102754148A (zh) 用于选择性的声音消除的方法,系统以及项目
KR101659410B1 (ko) 개인사용 스마트기기와 이어폰 조합의 사운드최적화 장치 및 방법
US20160180863A1 (en) Intelligent volume control interface
JP6481341B2 (ja) コンテンツ再生装置
KR101355910B1 (ko) 스마트폰을 이용한 무선마이크 시스템
JP2015192256A (ja) スピーカ装置
US20190327559A1 (en) Multi-listener bluetooth (bt) audio system
KR102237755B1 (ko) 음원별 음량 동기화 조절 장치
KR101399915B1 (ko) 자동 마이크신호 설정수단이 구비된 전관방송시스템
JP6587281B2 (ja) 音響システム、音響機器、及び端末装置
KR102676074B1 (ko) 믹싱 메타데이터를 이용하여 투명 모드를 제공하는 방법 및 오디오 장치
JP2019140503A (ja) 情報処理装置、情報処理方法、及び情報処理プログラム
KR20100027713A (ko) 홈시어터 시스템의 사운드 셋팅 장치 및 방법
JP4666359B2 (ja) カラオケ施設のインターホンシステム
JP4429210B2 (ja) カラオケ施設のインターホンシステム
JP2024025259A (ja) オーディオシステム、オーディオ装置、プログラム、およびオーディオ再生方法
KR101448247B1 (ko) 음압 측정장치 및 그 동작방법
KR101067595B1 (ko) 청취자의 청취 특성에 기반하여 저대역 오디오 신호를 보상하는 오디오 신호 재생장치
GB2521554A (en) Method and system
KR20180015333A (ko) 헤드폰 또는 이어폰 음상정위를 위한 좌우출력 자동조절 장치 및 방법
KR20060034157A (ko) 이동통신 단말기에서 외부신호 출력장치 및 그 방법

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15806556

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 15317747

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2015806556

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2015806556

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 2015806556

Country of ref document: EP