WO2009107227A1 - 音響信号処理装置及び音響信号処理方法 - Google Patents
音響信号処理装置及び音響信号処理方法 Download PDFInfo
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- WO2009107227A1 WO2009107227A1 PCT/JP2008/053616 JP2008053616W WO2009107227A1 WO 2009107227 A1 WO2009107227 A1 WO 2009107227A1 JP 2008053616 W JP2008053616 W JP 2008053616W WO 2009107227 A1 WO2009107227 A1 WO 2009107227A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/30—Control circuits for electronic adaptation of the sound field
- H04S7/301—Automatic calibration of stereophonic sound system, e.g. with test microphone
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/30—Control circuits for electronic adaptation of the sound field
- H04S7/308—Electronic adaptation dependent on speaker or headphone connection
Definitions
- the present invention relates to an acoustic signal processing device, an acoustic signal processing method, an acoustic signal processing program, and a recording medium on which the acoustic signal processing program is recorded.
- the installation environment of such an audio device is various. For this reason, it often happens that a plurality of speakers that output sound cannot be arranged at positions having symmetry in terms of the multi-channel surround system.
- the plurality of speakers are placed at positions having symmetry that is recommended from the viewpoint of the multi-channel surround system. Can not be placed.
- the characteristics of each speaker are often not optimal in realizing the multi-channel surround system. For this reason, in order to obtain good quality surround sound by the adopted multi-channel surround system, it is necessary to correct the sound field by correcting the acoustic signal.
- the acoustic device (hereinafter, also referred to as “sound source device”) that needs to correct the acoustic signal for the sound field correction as described above is not limited to one type.
- a sound source device that is assumed to be mounted on a vehicle, there are a player that reproduces the audio content recorded on the above-described DVD or the like, a broadcast receiving device that reproduces the audio content included in the broadcast wave, and the like.
- a technique for sharing a means for correcting an acoustic signal has been proposed (see Patent Document 1: hereinafter referred to as “conventional example”).
- the conventional technology described above is a technology for suppressing the occurrence of a sense of incongruity with the user's volume due to switching of the sound source device. For this reason, the technology of the conventional example does not perform sound field correction processing in order to make the sound field formed by output sounds from a plurality of speakers full of presence.
- a specific sound field correction process is performed on the original sound signal faithful to the audio content, and the speaker Some of them generate acoustic signals for provision to.
- a sound source device that is not a genuine product generally generates an original sound signal as a sound signal for provision to a speaker. For this reason, even if the sound field correction process is appropriate for the sound signal generated by the sound source device that is not a genuine product, the sound field process is appropriate for the sound signal generated by the sound source device that is a genuine product. Is not limited.
- the present invention has been made in view of the above circumstances, and can supply an output audio signal in a state in which an appropriate sound field correction process has been performed to a speaker, regardless of which of a plurality of acoustic signals is selected.
- An object of the present invention is to provide an acoustic signal processing device and an acoustic signal processing method that can be used.
- the present invention is an acoustic signal processing device that generates an acoustic signal supplied to a plurality of speakers that output sound to a sound field space, and receives the acoustic signal from each of a plurality of external devices. Measuring a mode of a specific sound field correction process that is a sound field correction process applied to a specific acoustic signal that is an acoustic signal received from a specific external device among the plurality of external devices.
- Measurement means acquisition means for acquiring a mode of appropriate correction processing that is sound field correction processing to be performed on the original sound signal according to the sound field space; and acoustic signals supplied to the plurality of speakers When the specific sound signal is selected, the appropriate correction processing is performed on the original sound signal corresponding to the specific sound signal based on the measurement result by the measurement unit and the acquisition result by the acquisition unit.
- a sound signal processing apparatus comprising: a; generating means for generating an acoustic signal.
- the present invention is an acoustic signal processing method for generating an acoustic signal supplied to a plurality of speakers that output sound to a sound field space, and is a specific external device among the plurality of external devices.
- An acoustic signal processing method An acoustic signal processing method.
- the present invention is an acoustic signal processing program characterized by causing an arithmetic means to execute the acoustic signal processing method of the present invention.
- the present invention is a recording medium in which the acoustic signal processing program of the present invention is recorded so as to be readable by a calculation means.
- FIG. 1 is a block diagram schematically showing the configuration of an acoustic signal processing device according to a first embodiment of the present invention. It is a figure for demonstrating the arrangement position of the four speaker units of FIG. It is a block diagram for demonstrating the structure of the control unit of FIG. It is a block diagram for demonstrating the structure of the reception process part of FIG. It is a block diagram for demonstrating the structure of the output audio
- 16 is a flowchart for explaining processing corresponding to selection of reproduced sound in the apparatus of FIG. It is a block diagram which shows roughly the structure of the acoustic signal processing apparatus which concerns on 3rd Embodiment of this invention. It is a block diagram for demonstrating the structure of the control unit of FIG. It is a block diagram for demonstrating the structure of the reproduction
- FIG. 1 is a block diagram illustrating a schematic configuration of an acoustic signal processing device 100A according to the first embodiment.
- the acoustic signal processing device 100A is assumed to be a device mounted on the vehicle CR (see FIG. 2).
- the acoustic signal processing device 100A performs processing on an acoustic signal of a 4-channel surround system that is one of the multi-channel surround systems.
- the four-channel surround sound signal includes a left channel (hereinafter referred to as “L channel”), a right channel (hereinafter referred to as “R channel”), a surround left channel (hereinafter referred to as “SL channel”), and a surround right channel.
- An acoustic signal having a four-channel configuration (hereinafter referred to as “SR channel”) is assumed.
- speaker units 910 L to 910 SR corresponding to the L to SR channels are connected to the acoustic signal processing device 100A.
- the speaker unit 910 L is disposed in the front door housing on the passenger seat side.
- the speaker unit 910 L is disposed so as to face the passenger seat side.
- the speaker unit 910 R is disposed in the front door housing on the driver's seat side.
- the speaker unit 910 R is disposed so as to face the driver's seat side.
- the speaker unit 910 SL is arranged in a housing on the rear side of the passenger seat.
- the speaker unit 910 SL is disposed so as to face the rear seat on the passenger seat side.
- speaker unit 910 SR is arranged in a housing on the rear side of the driver's seat.
- the speaker unit 910 SR is disposed so as to face the rear seat on the driver's seat side.
- Sound is output from the speaker units 910 L to 910 SR arranged as described above to the sound field space ASP.
- sound source devices 920 0 , 920 1 , and 920 2 are connected to the acoustic signal processing device 100A.
- each of the sound source devices 920 0 , 920 1 , and 920 2 generates an acoustic signal based on the audio content and sends it to the acoustic signal processing device 100A.
- the tone generator 920 0 generates an original acoustic signal having a 4-channel configuration that is faithful to the audio content recorded on the recording medium RM such as a DVD. Then, the sound source device 920 0, specific sound field correction process to the original audio signal is subjected, the acoustic signal UAS is generated.
- the acoustic signal UAS is composed of four analog signals UAS L to UAS SR .
- the sound source device 920 1 generates a 4-channel original sound signal faithful to the audio content. Then, the sound source device 920 1, the original audio signal is sent to the acoustic signal processing device 100A as an acoustic signal NAS.
- the acoustic signal NAS is composed of four analog signals NAS L to NAS SR .
- the sound source device 920 2 generates an original acoustic signal having a 4-channel configuration that is faithful to the audio content. Then, from the sound source device 920 2, the original audio signal is sent to the acoustic signal processing device 100A as an acoustic signal NAD.
- the acoustic signal NAD is a digital signal that is not subjected to signal separation for each of the four channels.
- the acoustic signal processing device 100A includes a control unit 110A, a sound collection unit 140 as sound collection means, a display unit 150, and an operation input unit 160.
- the control unit 110A performs the generation process of the output audio signal AOS based on the measurement process in the above-described mode of the appropriate sound field correction process and the acoustic signal from any of the sound source devices 920 0 to 920 2 .
- the control unit 110A will be described later.
- the sound collection unit 140 includes, for example, (i) a microphone that collects ambient sounds and generates an electrical analog audio signal, (ii) an amplifier that amplifies the analog audio signal output from the microphone, and (iii) amplification And an AD converter (Analog to Digital Converter) for converting the analog audio signal into a digital audio signal.
- the microphone is disposed at at least one predetermined position in the sound field space ASP.
- the sound collection result of the measurement sound output from each of the speaker units 910 L to 910 SR by the sound collection unit 140 is reported to the control unit 110A as sound collection result data ASD.
- the display unit 150 includes, for example, (i) a display device such as a liquid crystal panel, an organic EL (Electro Luminescence) panel, and a PDP (Plasma Display Panel), and (ii) a graphic renderer that controls the entire display unit 150. It comprises a display controller, and (iii) a display image memory for storing display image data.
- the display unit 150 displays operation guidance information and the like according to display data IMD from the control unit 110A.
- the above-described operation input unit 160 includes a key unit provided in the main body of the acoustic signal processing device 100A and / or a remote input device including the key unit.
- a key part provided in the main body part a touch panel provided in a display device of the display unit 150 can be used.
- it can replace with the structure which has a key part, or can also employ
- the operation content of the acoustic signal processing device 100A is set. For example, a sound command for selecting whether to output from the speaker units 910 L to 910 SR a sound command based on an acoustic signal from any one of the sound source devices 920 0 to 920 2 , a measurement command in the mode of appropriate sound field correction processing A user performs a selection command or the like using the operation input unit 160. Such input contents are sent as operation input data IPD from the operation input unit 160 to the control unit 110A.
- control unit 110A includes a reception processing unit 111 as a receiving unit and an output audio data generation unit 114A.
- the control unit 110A includes a DA (Digital-to-Analogue) conversion unit 115 and an amplification unit 116.
- the control unit 110A includes a process control unit 119A.
- the reception processing unit 111 receives the acoustic signal UAS from the sound source device 920 0 , the acoustic signal NAS from the sound source device 920 1, and the acoustic signal NAD from the sound source device 920 2 .
- the reception processing unit 111 generates a signal UAD from the acoustic signal UAS, generates a signal ND1 from the acoustic signal NAS, and generates a signal ND2 from the acoustic signal NAD.
- the reception processing unit 111 includes AD (Analogue to Digital) conversion units 211 and 212 and a channel separation unit 213.
- the AD conversion unit 211 includes four AD converters.
- the AD converter 211 receives the acoustic signal UAS from the sound source device 920 0 .
- the AD conversion unit 211 AD converts each of the individual acoustic signals UAS L to UAS SR that are analog signals included in the acoustic signal UAS, and generates a digital signal UAD.
- the signal UAD generated in this way is sent to the processing control unit 119A and the output audio data generation unit 114A.
- the AD conversion unit 212 includes four AD converters.
- the AD converter 212 receives the acoustic signal NAS from the sound source device 920 1 . Then, the AD conversion unit 212, each individual acoustic signals NAS L ⁇ NAS SR is an analog signal included in the acoustic signal NAS to AD conversion, and generates a signal ND1 in digital form.
- the signal ND1 thus generated is sent to the output audio data generation unit 114A.
- the channel separation unit 213 receives the acoustic signal NAD from the sound source device 920 2 . Then, the channel separation unit 213 analyzes the acoustic signal NAD, and converts the acoustic signal NAD into the individual signals ND2 L to ND2 SR corresponding to the L to SR channels in the 4-channel surround system according to the channel designation information included in the acoustic signal NAD. To generate a signal ND2. The signal ND2 generated in this way is sent to the output audio data generation unit 114A.
- the output audio data generation unit 114A receives the signals UAD, ND1, and ND2 from the reception processing unit 111. Then, the output audio data generation unit 114A generates the signal AOD in accordance with the generation control command GCA from the processing control unit 119A.
- the signal AOD includes individual signals AOD L to AOD SR corresponding to L to SR.
- the output audio data generation unit 114 ⁇ / b> A includes a reproduction audio data generation unit 241 ⁇ / b> A, a test audio generation unit 242, and a signal selection unit 243 as generation means.
- the reproduced audio data generation unit 241A receives the signals UAD, ND1, and ND2 from the reception processing unit 111. Then, the reproduction audio data generation unit 241A generates the signal APD in accordance with the reproduction generation command RGA in the generation control command GCA.
- the signal APD includes individual signals APD L to APD SR corresponding to L to SR.
- the reproduced audio data generation unit 241A includes a correction cancellation unit 310 as a cancellation unit, a signal selection unit 320, and a correction processing unit 330 as a correction unit.
- the correction cancellation unit 310 receives the signal UAD from the reception processing unit 111. Then, the correction canceling unit 310 cancels the specific sound field correction applied to the signal UAD in accordance with the cancellation control command ACN in the reproduction generation command RGA, and generates the signal ACD.
- the signal ACD includes individual signals ACD L to ACD SR corresponding to L to SR.
- the correction cancellation unit 310 includes a frequency characteristic correction cancellation unit 311, a synchronization correction cancellation unit 312, and a volume correction cancellation unit 313.
- the frequency characteristic correction canceling unit 311 receives the signal UAD from the reception processing unit 111. Then, the frequency characteristic correction cancellation unit 311 corrects each frequency characteristic of the individual signals UAD L to UAD SR in the signal UAD in accordance with the frequency characteristic correction cancellation command CFC in the cancellation control command ACN, thereby performing the specific sound field correction processing. A signal CFD including individual signals CFD L to CFD SR in which frequency characteristic correction is canceled is generated. The signal CFD generated in this way is sent to the synchronization correction canceling unit 312.
- the frequency characteristic correction canceling unit 311 includes individual frequency characteristic correction means such as an equalizer means prepared for each of the individual signals UAD L to UAD SR .
- the frequency characteristic correction cancellation command CFC includes individual frequency characteristic correction cancellation commands CFC L to CFC SR corresponding to the individual signals UAD L to UAD SR .
- the synchronization correction cancellation unit 312 receives the signal CFD from the frequency characteristic correction cancellation unit 311. Then, the synchronization correction canceling unit 312 performs the correction for delaying each of the individual signals CFD L to CFD SR in the signal CFD in accordance with the synchronization correction cancellation command CDC in the cancellation control command ACN, thereby performing the synchronization correction in the specific sound field correction processing.
- a signal CDD including the individual signals CDD L to CDD SR in which is canceled is generated. The signal CDD generated in this way is sent to the volume correction cancellation unit 313.
- the synchronization correction cancellation unit 312 includes individual variable delay means prepared for each of the individual signals CFD L to CFD SR .
- the synchronization correction cancellation command CDC includes individual synchronization correction cancellation commands CDC L to CDC SR corresponding to the individual signals CFD L to CFD SR .
- the volume correction cancellation unit 313 receives the signal CDD from the synchronization correction cancellation unit 312. Then, the volume correction canceling unit 313 corrects the volume of each of the individual signals CDD L to CDD SR in the signal CDD according to the volume correction cancellation command CVC in the cancellation control command ACN, so that the volume in the specific sound field correction processing is performed.
- a signal ACD including the individual signals ACD L to ACD SR with the balance correction canceled is generated.
- the signal ACD generated in this way is sent to the signal selection unit 320.
- volume correction canceling unit 313 includes individual volume correction means such as variable attenuation means prepared for each of the individual signals CDD L to CDD SR .
- volume correction cancellation command CVC includes individual volume correction cancellation commands CVC L to CVC SR corresponding to the individual signals CDD L to CDD SR , respectively.
- the signal selection unit 320 receives the signal ACD from the correction cancellation unit 310 and the signals ND ⁇ b> 1 and ND ⁇ b> 2 from the reception processing unit 111. Then, the signal selection unit 320 selects any one of the signals ACD, ND1, and ND2 in accordance with the signal selection command SL2 in the reproduction generation command RGA, and sends it as the signal SND to the correction processing unit 330.
- the signal SND includes individual signals SND L to SND SR corresponding to the L to SR channels.
- the correction processing unit 330 receives the signal SND from the signal selection unit 320. Then, the correction processing unit 330 performs sound field correction processing on the signal SND in accordance with the correction control command APC in the reproduction generation command RGA. As illustrated in FIG. 8, the correction processing unit 330 includes a frequency characteristic correction unit 331, a delay correction unit 332, and a volume correction unit 333.
- the frequency characteristic correction unit 331 receives the signal SND from the signal selection unit 320. Then, the frequency characteristic correction unit 331 corrects each frequency characteristic of the individual signals SND L to SND SR in the signal SND according to the frequency characteristic correction command AFC in the correction control command APC, and includes the signal FCD including the individual signals FCD L to FCD SR. Is generated. The signal FCD generated in this way is sent to the delay correction unit 332.
- the frequency characteristic correction unit 331 includes individual frequency characteristic correction means such as an equalizer means prepared for each of the individual signals SND L to SND SR .
- the frequency characteristic correction command AFC includes individual frequency characteristic correction commands AFC L to AFC SR corresponding to the individual signals SND L to SND SR .
- the delay correction unit 332 receives the signal FCD from the frequency characteristic correction unit 331. Then, the delay correction unit 332 generates a signal DCD including the individual signals DCD L to DCD SR obtained by delaying the individual signals FCD L to FCD SR in the signal FCD according to the delay correction command ALC in the correction control command APC. The signal DCD generated in this way is sent to the volume correction unit 333.
- the delay correction unit 332 includes individual variable delay means prepared for each of the individual signals FCD L to FCD SR .
- the delay correction command ALC includes individual delay correction commands ALC L to ALC SR corresponding to the individual signals FCD L to FCD SR , respectively.
- the volume correction unit 333 receives the signal DCD from the delay correction unit 332. Then, the volume correction unit 333 generates a signal APD including individual signals APD L to APD SR obtained by correcting the volumes of the individual signals DCD L to DCD SR in the signal DCD according to the volume correction command AVC in the correction control command APC. . The signal APD generated in this way is sent to the signal selection unit 243.
- volume correction unit 333 is configured to include individual volume correction means such as variable attenuation means prepared for each of the individual signals DCD L to DCD SR .
- the sound volume correction command AVC includes individual sound volume correction commands AVC L to AVC SR corresponding to the individual signals DCD L to DCD SR .
- the test sound generator 242 generates test sound data used for measurement for proper sound field correction processing corresponding to the sound field space ASP.
- the test sound generation unit 242 generates test sound data of the type specified by the test sound generation command TSG in the generation control command GCA.
- the test sound generation unit 242 uses, for example, pink noise sound data used for measurement for frequency characteristic correction and volume balance correction as test sound data, and pulse sound data used for measurement for synchronization correction processing, for example. Can be generated.
- the test sound data generated in the test sound generator 242 is sent to the signal selector 243 as a test sound data signal TSD.
- the signal selection unit 243 includes four switch elements 245 L to 245 SR .
- Each of the switch elements 245 L to 245 SR has an A terminal and a B terminal as input terminals and a C terminal as an output terminal.
- a signal AOD including an individual signal (including no signal) AOD j output from the C terminal of the switch element 245 j is sent to the DA converter 115.
- the DA conversion unit 115 includes four DA converters.
- the DA converter 115 receives the signal AOD from the output audio data generator 114A. Then, the DA conversion unit 115 DA-converts each of the individual signals AOD L to AOD SR included in the signal AOD to generate an analog signal ACS.
- the signal ACS thus generated is sent to the amplifying unit 116.
- the amplifying unit 116 includes four power amplifying units.
- the amplifier 116 receives the signal ACS from the DA converter 115. Then, the amplifying unit 116 power-amplifies each of the individual signals ACS L to ACS SR included in the signal ACS to generate an output audio signal AOS.
- the processing control unit 119A performs various processes to control the operation of the acoustic signal processing device 100A. As shown in FIG. 10, the processing control unit 119A includes a correction measurement unit 291 as a measurement unit, a proper correction acquisition unit 292 as an acquisition unit, and a correction control unit 295A.
- Additional corrective measurement unit 291 measures the aspects of specific sound field correction process in the sound source device 920 0.
- the correction measurement unit 291 analyzes the signal UAD obtained by AD conversion of the acoustic signal UAS in the reception processing unit 111, and performs frequency characteristic correction processing, synchronization correction processing, and volume balance correction processing included in the specific sound field correction processing. Aspect is to be measured.
- a corrected measurement result AMR which is a measurement result by the correction measurement unit 291, is reported to the correction control unit 295 ⁇ / b> A.
- frequency characteristic correction processing refers to frequency characteristic correction processing performed on each of the individual acoustic signals corresponding to the L to SR channels in the original acoustic signal.
- synchronization correction process refers to a process for correcting the audio output timing from each of the speaker units 910 L to 910 SR .
- volume balance correction process refers to a process for correcting a balance between speaker units regarding the output volume from each of the speaker units 910 L to 910 SR .
- the measurement aspects of the synchronization correction process in the specific sound field correction process as shown in FIG. 11, as the measurement audio content, simultaneously with a period T P in correspondence with L ⁇ SR channel
- the generated pulsed sound is used.
- the sound field correction process is performed in the tone generator 920 0, as a result of the synchronization correction process in the sound field correction process, for example, in FIG. 12
- an acoustic signal UAS including individual acoustic signals UAS L to UAS SR is supplied to the control unit 110A.
- the period T P the maximum assumed that is assumed as the maximum delay time difference T DM is the maximum value of the delay time difference that is applied to the individual acoustic signals UAS L ⁇ UAS SR by the synchronization correction process in the sound source device 920 0
- the time is longer than twice the time difference TMM .
- the correction measurement unit 291 the first after the detection of the pulse, analyzing a pulse in the individual acoustic signals UAS L ⁇ UAS SR after a lapse of period T P / 2 for any of the individual acoustic signals UAS L ⁇ UAS SR as a target, measuring the aspects of the synchronization correction process in the sound source device 920 0.
- the pulse to be analyzed is the synchronization signal. Since the detection is performed in the order of small delay times due to the correction processing, the correction measurement unit 291 can correctly measure the synchronization correction mode.
- the period T P and the assumed maximum time difference T MM are determined in advance based on experiments, simulations, experiences, and the like from the viewpoint of measuring a correct and quick mode of synchronous correction processing.
- the appropriate correction acquisition unit 292 acquires an appropriate sound field correction process according to the sound field space ASP (see FIG. 2) under the control of the correction control unit 295A.
- the appropriate correction acquisition unit 292 acquires aspects of frequency characteristic correction processing, synchronization correction processing, and volume balance correction processing included in the appropriate sound field correction processing.
- the appropriate correction acquisition unit 292 When acquiring the mode of the appropriate sound field correction process, the appropriate correction acquisition unit 292 sequentially applies the test sound output request TSQ specifying the type of the test sound and the type of the speaker unit that outputs the test sound in a predetermined order. Send to 295A. Then, the appropriate correction acquisition unit 292 acquires the mode of the appropriate sound field correction processing based on the sound collection result data ASD of the test sound collection unit 140 output from the designated speaker unit. An appropriate correction acquisition result ACR that is an acquisition result by the appropriate correction acquisition unit 292 is reported to the correction control unit 295A.
- the appropriate correction acquisition unit 292 when acquiring the synchronization correction mode in the appropriate sound field correction process, specifies pulse audio data as the type of test audio data. In addition, when acquiring the frequency characteristic correction and volume balance correction modes in the appropriate sound field correction process, the appropriate correction acquisition unit 292 designates pink noise audio data as the type of test audio data.
- the appropriate correction acquisition unit 292 uses three types of individual sound field correction processes of the frequency characteristic correction process, the synchronization correction process, and the volume balance correction process in the appropriate sound field correction process as predetermined values. In order, it gets automatically.
- the correction control unit 295A performs control processing corresponding to the user's operation input received as the operation input data IPD from the operation input unit 160.
- the correction control unit 295A outputs the voice based on the designated acoustic signal from the speaker units 910 L to 910 SR.
- the signal selection designations SL1 and SL2 necessary to be transmitted are sent to the signal selection units 243 (see FIG. 5) and 320 (see FIG. 6).
- the correction control unit 295A sends the signal selection designation SL1 to the signal selection unit 243 and sends the signal selection designation SL1 to the effect that the signal APD should be selected.
- the signal selection designation SL2 is sent to the signal selection unit 320.
- the correction control unit 295 sends to the signal selection unit 243 as signal selection designation SL1 that the signal APD should be selected and also to select the signal ND1.
- the signal selection designation SL2 is sent to the signal selection unit 320.
- the correction control unit 295A sends the signal APD selection signal SLD to the signal selection unit 243 as well as the signal ND2 selection.
- the signal selection designation SL2 is sent to the signal selection unit 320.
- the correction control unit 295A when the user inputs a measurement instruction aspects of the sound field correction processing by the sound source device 920 0 on the operation input unit 160, the correction to the measurement unit 291 measures start command a measurement control signal AMQ Send as.
- the user for each individual correction processing of the measurement object, after to perform the generation of the acoustic signal UAS based on a corresponding audio content to the sound source device 920 0, the operation input unit 160, the measurement object The type of correction processing is input.
- the corrected measurement result AMR indicating the individual correction process for which the measurement has been completed is reported to the correction control unit 295A.
- the correction control unit 295A receives the correction measurement result AMR from the correction measurement unit 291 as the measurement result of the individual correction process, the correction control unit 295A cancels the measured individual correction process based on the correction measurement result AMR.
- a necessary frequency characteristic correction cancellation command CFC, synchronization correction cancellation command CDC or volume correction cancellation command CVC is generated.
- the frequency characteristic correction cancellation command CFC, the synchronization correction cancellation command CDC or the volume correction cancellation command CVC generated in this way is sent to the correction cancellation unit 310 as the cancellation control command ACN (see FIG. 7). Then, the type of the individual correction process and the fact that the measurement is completed are displayed on the display device of the display unit 150.
- the correction control unit 295A sends an acquisition start command as the acquisition control signal ACQ to the appropriate correction acquisition unit 292 when the user inputs an acquisition command of the mode of the appropriate sound field correction processing to the operation input unit 160.
- the correction control unit 295A Upon receipt of the test audio output request TSQ from the appropriate correction acquisition unit 292 that has received this acquisition start command, the correction control unit 295A first outputs test audio from the speaker unit designated by the test audio output request TSQ. A signal selection designation SL1 is generated and sent to the signal selection unit 243. Subsequently, the correction control unit 295A generates a test sound generation command TSG specifying the type of test sound data specified by the test sound output request TSQ, and sends it to the test sound generation unit 242.
- the correction control unit 295A when receiving the appropriate correction acquisition result ACR from the appropriate correction acquisition unit 292, the correction control unit 295A, based on the appropriate correction acquisition result ACR, the frequency characteristic correction command AFC necessary for performing the appropriate sound field correction processing, A correction control command APC including a delay correction command ALC and a sound volume correction command AVC is generated.
- the correction control command APC generated in this way is sent to the correction processing unit 330 (see FIG. 8). Then, the correction control unit 295A displays on the display device of the display unit 150 that the acquisition of the mode of the appropriate sound field correction process has been completed.
- Measurement of Specific Sound Field Correction Process and Setting of Correction Cancellation Unit 310 First described measurement and setting process of the correction cancellation unit 310 of the embodiment of a specific sound field correction processing by the sound source device 920 0.
- step S11 the correction control unit 295A of the process control unit 119A determines whether or not the measurement command from the operation input unit 160 has been received. If this determination is negative (step S11: N), the process of step S11 is repeated.
- the sound source device 920 to initiate generation of an acoustic signal UAS based on the audio content corresponding to the individual correction processing to be measured. Subsequently, when the user inputs a measurement command specifying the individual correction process to be measured first, to the operation input unit 160, the fact is reported to the correction control unit 295A as operation input data IPD.
- step S11 Upon receiving this report, the result of determination in step S11 becomes affirmative (step S11: Y), and the process proceeds to step S12.
- step S12 the correction control unit 295A sends a measurement start command specifying the individual measurement process specified in the measurement command by the user to the correction measurement unit 291 as the measurement control signal AMQ.
- the correction measurement unit 291 measures the aspect of the individual correction process specified in the measurement start command.
- the correction measurement unit 291 collects the signal levels of the individual signals UAD L to UAD SR in the signal UAD from the reception processing unit 111 over a predetermined time. And the correction measurement part 291 analyzes the collection result, and measures the aspect of the said individual correction process.
- the correction measurement unit 291 first determines the signal level for each of the individual signals UAD L to UAD SR based on the collection result. The frequency distribution of is calculated. Then, the correction measurement unit 291 analyzes the calculation result of the frequency distribution and measures the mode of the frequency characteristic correction process. This measurement result is reported to the correction control unit 295A as the corrected measurement result AMR.
- the correction measurement unit 291 first starts collection, and one of the individual signals UAD L to UAD SR is first determined in advance. The timing when the signal state is higher than the level is specified. Then, the correction measurement unit 291 specifies the timing at which each of the individual signals UAD L to UAD SR becomes a signaled state after the time T P / 2 has elapsed from the specified timing. Based on the result, the correction measurement unit 291 measures the mode of the synchronization correction process. This measurement result is reported to the correction control unit 295A as the corrected measurement result AMR.
- the correction measurement unit 291 analyzes the collection result and sets the volume correction mode for each of the individual signals UAD L to UAD SR. measure. This measurement result is reported to the correction control unit 295A as the corrected measurement result AMR.
- step S14 the correction control unit 295A that has received the report of the corrected measurement result AMR cancels the individual correction process according to the mode corresponding to the corrected measurement result AMR in the correction canceling unit 310 based on the corrected measurement result AMR.
- the correction control unit 295A calculates a set value to be set in the frequency characteristic correction cancellation unit 311 in the correction cancellation unit 310.
- the correction control unit 295A calculates a set value to be set in the synchronization correction cancellation unit 312 in the correction cancellation unit 310.
- the correction control unit 295A calculates a set value to be set in the volume correction cancellation unit 313 in the correction cancellation unit 310.
- step 15 the correction control unit 295A sends the calculation result of the set value in step S14 to the corresponding one of the frequency characteristic correction cancellation unit 311, the synchronization correction cancellation unit 312 and the volume correction cancellation unit 313.
- a frequency characteristic correction cancellation command CFC specifying a set value is sent to the frequency characteristic correction cancellation unit 311.
- a synchronization correction cancellation command CDC specifying a set value is sent to the synchronization correction cancellation unit 312.
- a volume correction cancellation command CVC specifying a set value is sent to the volume correction cancellation unit 313.
- the correction cancellation unit 310 cancels the measured individual correction process.
- the correction control unit 295A displays the fact on the display device of the display unit 150. .
- step S21 the correction control unit 295A of the process control unit 119A determines whether or not an acquisition command from the operation input unit 160 has been received. If this determination is negative (step S21: N), the process of step S21 is repeated.
- step S21 the correction control unit 295A sends an acquisition command for the mode of appropriate sound field correction processing to the correction measurement unit 291 as an acquisition control signal ACQ.
- step S23 an acquisition process of the proper sound field correction process is performed.
- the appropriate correction acquisition unit 292 sequentially sends a test audio output request TSQ designating the type of test audio and the type of speaker unit that outputs the test audio to the correction control unit 295A in a predetermined order.
- the correction control unit 295A selects to output the type of test audio specified by the test audio output request TSQ from the type of speaker unit specified by the test audio output request TSQ.
- the signal designation SL1 and the test sound generation command TSG are generated and sent to the signal selection unit 243 and the test sound generation unit 242.
- the type of test sound specified by the test sound output request TSQ is output from the type of speaker unit specified by the test sound output request TSQ.
- the proper correction acquisition unit 292 collects the sound collection results of the sound collection unit 140 output each time the test sound output request TSQ is issued. Then, the appropriate correction acquisition unit 292 analyzes the collection result and acquires the mode of the appropriate sound field correction process. This acquisition result is reported to the correction control unit 295A as an appropriate correction acquisition result ACR.
- step S24 the correction control unit 295A that has received the report of the appropriate correction acquisition result ACR calculates a setting value for performing appropriate sound field correction in the correction processing unit 330 based on the appropriate correction acquisition result ACR.
- step 25 the correction control unit 295A sends the setting value calculation result in step S24 to the correction processing unit 330.
- an appropriate sound field correction process is performed on the signal SND.
- the correction control unit 295A displays that fact on the display device of the display unit 150.
- the correction control unit 295A When the user inputs designation of the type of acoustic signal corresponding to the sound reproduced and output from the speaker units 910 L to 910 SR to the operation input unit 160, this is reported to the correction control unit 295A as operation input data IPD. Receiving this report, the correction control unit 295A sends the signal selection designations SL1 and SL2 necessary for outputting the sound based on the designated acoustic signal from the speaker units 910 L to 910 SR to the signal selection units 243 and 320. .
- the correction control unit 295A sends the signal APD to be selected to the signal selection unit 243 as the signal selection designation SL1, and also indicates that the signal ACD should be selected.
- the signal is sent to the signal selection unit 320 as the selection designation SL2.
- the measurement process of the specific sound field correction process described above, the cancellation setting of the specific sound field correction process to the correction cancellation unit 310, the acquisition process of the appropriate sound field correction process mode, and the setting to the correction processing unit 330 are performed.
- output audio signals AOS L to AOS SR in a state where an appropriate sound field correction process is performed on the original sound signal of the sound signal UAS are supplied to the speaker units 910 L to 910 SR .
- the correction control unit 295A sends a signal selection designation SL1 indicating that the signal APD should be selected to the signal selection unit 243, and also indicates that the signal ND1 should be selected. It is sent to the signal selection unit 320 as SL2.
- the output sound in a state where the appropriate sound field correction process is performed on the acoustic signal NAS.
- Signals AOS L to AOS SR are supplied to speaker units 910 L to 910 SR .
- the correction control unit 295A sends the signal selection designation SL1 as the signal selection designation SL1 to the effect that the signal APD should be selected, and the signal selection designation that the signal ND2 should be selected. It is sent to the signal selection unit 320 as SL2.
- the output sound in a state where the appropriate sound field correction process is performed on the acoustic signal NAD.
- Signals AOS L to AOS SR are supplied to speaker units 910 L to 910 SR .
- the correction measurement unit in a specific external device is a sound source device 920 acoustic signal UAS in decorated with aspects of specific sound field correction processing has processing control unit 119A received from the 0 291 measures. Based on this measurement result, a setting for canceling the specific sound field correction processing applied to the acoustic signal UAS is performed for the correction canceling unit 310.
- the appropriate correction acquisition unit 292 in the process control unit 119A acquires the mode of the appropriate sound field processing according to the actual sound field space ASP. Based on this acquisition result, a setting for performing the appropriate sound field correction process on the signal SND is performed on the correction processing unit 330.
- the output audio signals AOS L to AOS SR are supplied to the speaker units 910 L to 910 SR in a state where the sound field correction processing is appropriately performed. be able to.
- period in response to L ⁇ SR channel T P The pulse-like sound that is generated at the same time is used.
- the period T P, the maximum assumed that is assumed as the maximum delay time difference T DM is the maximum value of the delay time difference that is applied to the individual acoustic signals UAS L ⁇ UAS SR by the synchronization correction process in the sound source device 920 0
- the time is longer than twice the time difference TMM .
- the generation timing of the acoustic signal UAD for measurement of the synchronization correction process and the collection timing of the signal UAD by the correction measurement unit 291 are initially shifted. Even when the gone, by analyzing the changes in the signal UAD in after correcting the measurement unit 291 is no signal period of the signal UAD is the duration T P / 2 or more, aspects of the synchronization correction process in the sound source device 920 0 Can be measured correctly.
- FIG. 15 is a block diagram illustrating a schematic configuration of an acoustic signal processing device 100B according to the second embodiment.
- the acoustic signal processing device 100B is different from the acoustic signal processing device 100A of the first embodiment described above (see FIG. 1) only in that it includes a control unit 110B instead of the control unit 110A. Is different.
- the control unit 110B includes an output audio data generation unit 114B instead of the output audio data generation unit 114A, as compared with the control unit 110A (see FIG. 3) described above, and a processing control unit. The difference is that a processing control unit 119B is provided instead of 119A.
- the output audio data generation unit 114B described above is reproduced audio data configured as shown in FIG. 17 instead of the reproduction audio data generation unit 241A, as compared to the output audio data generation unit 114A (FIG. 5) described above.
- the difference is that the generator 241B is provided.
- this reproduction audio data generation unit 241B does not include the correction cancellation unit 310, and the signal UAD from the reception processing unit 111 directly receives the signal selection unit 320. The point that is sent to is different.
- the reproduction generation command RGB supplied from the control processing unit 119B to the reproduction audio data generation unit 241B is different from the above-described reproduction generation command RGA in that it does not include the cancellation control command ACN.
- the output generation command GCB (see FIG. 16) supplied from the control processing unit 119B to the output audio data generation unit 114B is a reproduction generation command RGA compared to the above-described generation control command GCA (see FIGS. 3 and 5). Instead, the reproduction generation instruction RGB is included.
- the processing control unit 119B includes a correction control unit 295B instead of the correction control unit 295A as compared with the above-described processing control unit 119A (see FIG. 10), and a storage unit.
- the difference is that 296 is further provided.
- the cancellation parameter CNP and the appropriate parameter ADP are stored in the storage unit 296.
- the correction control unit 295 ⁇ / b> B performs control processing corresponding to the user's operation input received as the operation input data IPD from the operation input unit 160.
- the correction control unit 295B when the user inputs a measurement instruction aspects of the sound field correction processing by the sound source device 920 0 on the operation input unit 160, like the correction control unit 295A, the measurement to the correction measurement unit 291 A start command is sent as a measurement control signal AMQ.
- the correction control unit 295B receives an acquisition start command to the appropriate correction acquisition unit 292 in the same manner as the correction control unit 295A. Is sent as an acquisition control signal ACQ.
- the correction control unit 295B is first designated by the test voice output request TSQ, similarly to the correction control unit 295A.
- a signal selection designation SL1 for outputting test sound from the speaker unit is generated and sent to the signal selection unit 243.
- the correction control unit 295B similarly to the correction control unit 295A, the correction control unit 295B generates a test sound generation command TSG specifying the type of test sound data specified by the test sound output request TSQ, and sends it to the test sound generation unit 242.
- the correction control unit 295B receives the correction measurement result AMR as the measurement result of the individual correction process from the correction measurement unit 291, the correction control unit 295B cancels the measured individual correction process based on the correction measurement result AMR. Calculate the necessary offset parameters. Then, the correction control unit 295B updates the cancellation parameter CNP in the storage unit 296 by storing the calculation result of the individual cancellation parameter in the storage unit 296. Then, the correction control unit 295B causes the display device of the display unit 150 to display the type of the individual correction process and the fact that the measurement has been completed.
- the correction control unit 295B calculates an appropriate parameter necessary for performing the appropriate sound field correction process based on the appropriate correction acquisition result ACR. Then, the correction control unit 295B updates the appropriate parameter ADP in the storage unit 296 by storing the calculation result of the appropriate parameter in the storage unit 296. Then, the correction control unit 295B displays on the display device of the display unit 150 that the acquisition of the mode of the appropriate sound field correction process has been completed.
- the correction control unit 295B performs appropriate processing based on the designated acoustic signal. Is set so that the sound subjected to the sound field correction processing is output from the speaker units 910 L to 910 SR .
- This setting includes setting of the correction processing unit 330 by the correction control command APC and setting of the signal selection units 243 and 320 by the signal selection designations SL1 and SL2.
- the correction control unit 295B first reads the cancellation parameter CNP and the appropriate parameter ADP from the storage unit 296. Subsequently, the correction control unit 295B calculates a difference parameter obtained by adding the appropriate parameter ADP and the cancellation parameter CNP. Then, based on the calculated difference parameter, the correction control unit 295B corrects the correction control command APC including the frequency characteristic correction command AFC, the delay correction command ALC, and the volume correction command AVC necessary for appropriately performing the sound field correction processing. Is generated.
- the correction control unit 295B sends the correction control command APC thus generated to the correction processing unit 330. Thereafter, the correction control unit 295B sends to the signal selection unit 243 that the signal APD should be selected as the signal selection designation SL1, and also to the signal selection unit 320 that the signal ACD should be selected as the signal selection designation SL2. send.
- the correction control unit 295B first reads the appropriate parameter ADP from the storage unit 296. Then, the correction control unit 295B generates a correction control command APC including a frequency characteristic correction command AFC, a delay correction command ALC, and a volume correction command AVC necessary for appropriately performing the sound field correction processing based on the appropriate parameter. .
- the correction control unit 295B sends the correction control command APC thus generated to the correction processing unit 330. Thereafter, the correction control unit 295B sends to the signal selection unit 243 that the signal APD should be selected as the signal selection designation SL1, and also to the signal selection unit 320 that the signal ND1 should be selected as the signal selection designation SL2. send.
- the correction control unit 295B first reads the appropriate parameter ADP from the storage unit 296 as in the case where the acoustic signal NAS is designated. Then, the correction control unit 295B generates a correction control command APC including a frequency characteristic correction command AFC, a delay correction command ALC, and a volume correction command AVC necessary for appropriately performing the sound field correction processing based on the appropriate parameter. .
- the correction control unit 295B sends the correction control command APC generated in this way to the correction processing unit 330. Thereafter, the correction control unit 295B sends to the signal selection unit 243 that the signal APD should be selected as the signal selection designation SL1, and also to the signal selection unit 320 that the signal ND2 should be selected as the signal selection designation SL2. send. Let me show you.
- steps S31 to S33 the same processing as in steps S11 to S13 in FIG. 13 described above is performed, and individual processing in the specific sound field correction processing specified by the measurement command is performed. The aspect of the sound field correction process is measured. Then, this measurement result is reported to the correction control unit 295B as the corrected measurement result AMR.
- step S34 the correction control unit 295B that has received the report of the correction measurement result AMR calculates a cancellation parameter necessary for canceling the measured individual correction processing based on the correction measurement result AMR.
- step S35 the correction control unit 295B stores the calculation result of the individual cancellation parameter in the storage unit 296, thereby updating the cancellation parameter CNP in the storage unit 296.
- the correction control unit 295B causes the display device of the display unit 150 to display the type of the individual correction process and the fact that the measurement has been completed.
- steps S41 to S43 the same process as in steps S21 to S23 in FIG. 14 described above is performed, and the mode of the appropriate sound field correction process is acquired. Then, this acquisition result is reported to the correction control unit 295B as an appropriate correction acquisition result ACR.
- step S44 the correction control unit 295B that has received the report of the appropriate correction acquisition result ACR calculates an appropriate parameter necessary for performing an appropriate sound field correction process based on the appropriate correction acquisition result ACR. Subsequently, in step S45, the correction control unit 295B stores the calculation result of the appropriate parameter in the storage unit 296, thereby updating the appropriate parameter ADP in the storage unit 296. Then, the correction control unit 295B displays on the display device of the display unit 150 that the acquisition of the mode of the appropriate sound field correction process has been completed.
- step S51 the correction control unit 295B of the process control unit 119B determines whether or not a reproduction sound selection command from the operation input unit 160 has been received. If this determination is negative (step S51: N), the process of step S51 is repeated.
- step S51 when the user uses the operation input unit 160 to input a reproduction voice selection command to the operation input unit 160, the fact is reported to the correction control unit 295B as operation input data IPD.
- step S51: Y the result of determination in step S51 becomes affirmative (step S51: Y), and the process proceeds to step S52.
- step S52 it is determined whether or not the selected reproduction sound is a sound corresponding to the acoustic signal UAS. If the result of this determination is affirmative (step S52: Y), the process proceeds to step S53.
- step S53 a difference parameter is calculated. In calculating the difference parameter, first, the correction control unit 295B reads the cancellation parameter CNP and the appropriate parameter ADP from the storage unit 296. Subsequently, the correction control unit 295B adds the appropriate parameter ADP and the cancellation parameter CNP to calculate a difference parameter.
- step S54 the correction control unit 295B outputs the frequency characteristic correction command AFC, the delay correction command ALC, and the volume correction command AVC necessary for appropriately performing the sound field correction processing based on the calculated difference parameter.
- a correction control command APC is generated.
- the correction control unit 295B sends the generated correction control command APC to the correction processing unit 330.
- a sound field correction process obtained by subtracting the specific sound field correction process from the appropriate sound field correction process is executed in the correction processing unit 330.
- step S52 the process proceeds to step S55.
- step S55 first, the correction control unit 295B reads the appropriate parameter ADP from the storage unit 296. Then, the correction control unit 295B generates a correction control command APC including a frequency characteristic correction command AFC, a delay correction command ALC, and a sound volume correction command AVC necessary for appropriately performing the sound field correction processing based on the appropriate parameter. . Then, the correction control unit 295B sends the generated correction control command APC to the correction processing unit 330. As a result, the appropriate sound field correction process is executed in the correction processing unit 330.
- step S56 the correction control unit 295B is necessary for outputting sound based on the designated acoustic signal from the speaker units 910 L to 910 SR.
- the signal selection designations SL1 and SL2 are sent to the signal selection units 243 and 320.
- the correction control unit 295B sends the signal APD selection signal SLD to the signal selection unit 243 and the signal UAD selection message.
- the signal selection designation SL2 is sent to the signal selection unit 320.
- the output audio signals AOS L to AOS SR in a state where the appropriate sound field correction processing is performed on the original sound signal of the sound signal UAS are supplied to the speaker units 910 L to 910 SR .
- the correction control unit 295B sends a signal selection designation SL1 to the signal selection unit 243 indicating that the signal APD should be selected, and a signal indicating that the signal ND1 should be selected.
- the signal is sent to the signal selection unit 320 as the selection designation SL2.
- the output audio signals AOS L to AOS SR in a state where the appropriate sound field correction processing is performed on the acoustic signal NAS are supplied to the speaker units 910 L to 910 SR .
- the correction control unit 295B sends a signal selection designation SL1 to the signal selection unit 243 that the signal APD should be selected, and a signal that the signal ND2 should be selected.
- the signal is sent to the signal selection unit 320 as the selection designation SL2.
- the output audio signals AOS L to AOS SR in a state where the appropriate sound field correction processing is performed on the acoustic signal NAD are supplied to the speaker units 910 L to 910 SR .
- the correction measurement unit in a specific external device is a sound source device 920 acoustic signal UAS in decorated with aspects of specific sound field correction processing has processing control unit 119B received from the 0 291 measures.
- the appropriate correction acquisition unit 292 in the process control unit 119B acquires the mode of the appropriate sound field correction process according to the actual sound field space ASP.
- the sound field in a mode in which the specific sound field correction process is subtracted from the appropriate sound field correction process.
- Settings for performing the correction process are performed on the correction processing unit 330. Also.
- the setting for performing the appropriate sound field correction processing is performed on the correction processing unit 330. .
- the output audio signals AOS L to AOS SR are supplied to the speaker units 910 L to 910 SR in a state where the sound field correction processing is appropriately performed. be able to.
- the sound field correction process is performed by subtracting the specific sound field correction process from the appropriate sound field correction process. Compared to the case where the appropriate sound field correction process is performed after the process is canceled, the amount of correction that is actually applied to the acoustic signal can be reduced, and the deterioration of the sound quality caused by the sound field correction process can be suppressed. Is possible.
- the correction measurement unit 291 analyzes the change in the signal UAD after the no-signal period of the signal UAD continues for a time T P / 2 or more, so that the sound source device 920 0 The mode of the synchronization correction process can be measured correctly.
- FIG. 23 is a block diagram illustrating a schematic configuration of an acoustic signal processing device 100C according to the third embodiment.
- the acoustic signal processing device 100C includes only a control unit 110C instead of the control unit 110B, compared to the acoustic signal processing device 100B (see FIG. 15) of the second embodiment described above. Is different.
- the control unit 110C includes an output audio data generation unit 114C instead of the output audio data generation unit 114B as compared to the control unit 110B (see FIG. 16) described above, and a processing control unit. The difference is that a processing control unit 119C is provided instead of 119B.
- the output audio data generation unit 114C includes a reproduction audio data generation unit 241C configured as shown in FIG. 25 in place of the reproduction audio data generation unit 241B, as compared with the output audio data generation unit 114B described above.
- the point is different.
- this reproduction audio data generation unit 241C has a synchronization correction cancellation unit 312 as a synchronization correction cancellation unit and a pseudo surround processing unit 325 as a pseudo surround processing unit.
- the point which further comprises is different.
- the reproduction generation command RGC supplied from the control processing unit 119C to the reproduction audio data generation unit 241C is different from the above-described reproduction generation command RGB in that it further includes a synchronization correction cancellation command CDC.
- the output generation command GCC (see FIG. 24) supplied from the control processing unit 119C to the output audio data generation unit 114C is a reproduction generation command RGB compared to the above-described output generation command GCB (see FIGS. 16 and 18). Instead, it includes a regeneration generation command RGC.
- the synchronization correction cancellation unit 312 is configured in the same manner as in the first embodiment.
- the synchronization correction cancellation unit 312 receives the signal UAD from the reception processing unit 111. Then, the synchronization correction canceling unit 312 performs a correction for delaying each of the individual signals UAD L to UAD SR in the signal UAD in accordance with the synchronization correction canceling command CDC in the reproduction generation command RGC, thereby performing the synchronization correction in the specific sound field correction processing.
- a signal CLD including the individual signals CLD L to CLD SR in which is canceled is generated. The signal CLD generated in this way is sent to the signal selection unit 320.
- the pseudo surround processing unit 325 receives the signal SND from the signal selection unit 320. Then, the pseudo surround processing unit 325 performs pseudo surround processing on the signal SND in consideration of the correlation between the individual signals SND L to SND SR . The result of this pseudo surround processing is sent to the correction processing unit 330 as a signal PSD.
- the signal PSD includes individual signals PSD L to PSD SR corresponding to the L to SR channels.
- the processing control unit 119C is different from the above-described processing control unit 119B (see FIG. 18) in that a correction control unit 295C is provided instead of the correction control unit 295B.
- the correction control unit 295C performs control processing corresponding to the user's operation input received as the operation input data IPD from the operation input unit 160.
- the correction control unit 295C when the user inputs a measurement instruction aspects of the sound field correction processing by the sound source device 920 0 on the operation input unit 160 performs the same processing as the correction control unit 295B.
- the correction control unit 295C When receiving the test sound output request TSQ from the appropriate correction acquisition unit 292 that has received the acquisition start command, the correction control unit 295C performs the same processing as the correction control unit 295B.
- the correction control unit 295C receives the correction measurement result AMR as the measurement result of the individual correction process from the correction measurement unit 291, the correction control unit 295C performs the same process as the correction control unit 295B.
- the appropriate correction acquisition result ACR is received from the appropriate correction acquisition unit 292, the same processing as the correction control unit 295B is performed.
- the correction control unit 295C performs an appropriate operation based on the designated acoustic signal. Is set so that the sound subjected to the sound field correction processing is output from the speaker units 910 L to 910 SR .
- This setting includes the setting of the synchronous correction cancellation unit 312 by the synchronous correction cancellation command CDC, the setting of the correction processing unit 330 by the correction control command APC, and the setting of the signal selection units 243 and 320 by the signal selection designations SL1 and SL2. ing.
- the correction control unit 295C first reads the cancellation parameter CNP and the appropriate parameter ADP from the storage unit 296. Subsequently, the correction control unit 295C generates a synchronization correction cancellation command CDC based on the synchronization correction cancellation parameter in the cancellation parameter CNP and sends it to the synchronization correction cancellation unit 312.
- the correction control unit 295C generates a delay correction command ALC based on the synchronization correction parameter in the appropriate parameter ADP.
- the correction control unit 295C adds the frequency characteristic correction parameter and the volume correction parameter in the appropriate parameter ADP and the frequency characteristic correction cancellation parameter and the volume correction cancellation parameter in the cancellation parameter CNP to calculate a difference parameter. Then, the correction control unit 295C generates a frequency characteristic correction command AFC and a volume correction command AVC based on the calculated difference parameter.
- the correction control unit 295C sends the correction control command APC including the correction control command APC including the frequency characteristic correction command AFC, the delay correction command ALC, and the volume correction command AVC thus generated to the correction processing unit 330. Thereafter, the correction control unit 295C sends a signal selection designation SL1 to the signal selection unit 243 that the signal APD should be selected, and informs the signal selection unit 320 that the signal CLD should be selected as the signal selection designation SL2. send.
- the correction control unit 295C performs the same process as that of the above-described correction control unit 295B.
- Measurement of specific sound field correction process and acquisition of appropriate sound field correction process is performed in the same manner as in the second embodiment described above (see FIG. 20).
- the acquisition process of the mode of the appropriate sound field correction process is performed in the same manner as in the second embodiment described above (see FIG. 21).
- step S61 the correction control unit 295C of the process control unit 119C determines whether or not a reproduction sound selection command from the operation input unit 160 has been received. If this determination is negative (step S61: N), the process of step S61 is repeated.
- step S61 when the user uses the operation input unit 160 to input a reproduction voice selection command to the operation input unit 160, the fact is reported to the correction control unit 295C as operation input data IPD.
- step S61: Y the result of the determination in step S61 becomes affirmative (step S61: Y), and the process proceeds to step S62.
- step S62 the correction control unit 295C determines whether or not the selected reproduction sound is a sound corresponding to the acoustic signal UAS. If the result of this determination is affirmative (step S62: Y), the process proceeds to step S63.
- step S63 first, the correction control unit 295C reads the cancellation parameter CNP from the storage unit 296. Subsequently, the correction control unit 295C generates a synchronization correction cancellation command CDC based on the synchronization correction cancellation parameter in the cancellation parameter CNP and sends it to the synchronization correction cancellation unit 312.
- step S64 first, the correction control unit 295C further reads the appropriate parameter ADP from the storage unit 296. Subsequently, the correction control unit 295C adds the frequency characteristic correction parameter and the volume correction parameter in the appropriate parameter ADP and the frequency characteristic correction cancellation parameter and the volume correction cancellation parameter in the cancellation parameter CNP to calculate a difference parameter.
- step S65 first, the correction controller 295C generates a frequency characteristic correction command AFC and a volume correction command AVC based on the calculated difference parameter. Subsequently, the correction control unit 295C generates a delay correction command ALC based on the synchronization correction parameter in the appropriate parameter ADP. The correction control unit 295C sends the correction control command APC including the frequency characteristic correction command AFC, the delay correction command ALC, and the volume correction command AVC thus generated to the correction processing unit 330. Thereafter, the correction control unit 295C sends a signal selection designation SL1 to the signal selection unit 243 that the signal APD should be selected, and informs the signal selection unit 320 that the signal CLD should be selected as the signal selection designation SL2. send.
- the frequency characteristic in the specific sound field correction process is determined from the synchronization correction process in the appropriate sound field correction process, the frequency characteristic correction process in the appropriate sound field correction process, and the volume correction process.
- a sound field correction process in a form obtained by subtracting the aspects of the correction process and the volume correction process is executed in the correction processing unit 330.
- step S66 the correction control unit 295C reads the appropriate parameter ADP from the storage unit 296. Then, the correction control unit 295B generates a correction control command APC including a frequency characteristic correction command AFC, a delay correction command ALC, and a sound volume correction command AVC necessary for appropriately performing the sound field correction processing based on the appropriate parameter. . Then, the correction control unit 295C sends the generated correction control command APC to the correction processing unit 330. As a result, the appropriate sound field correction process is executed in the correction processing unit 330.
- step S67 the correction control unit 295C is necessary for outputting sound based on the designated acoustic signal from the speaker units 910 L to 910 SR.
- the signal selection designations SL1 and SL2 are sent to the signal selection units 243 and 320.
- the correction control unit 295C sends the signal selection designation SL1 to the signal selection unit 243 that the signal APD should be selected, and also indicates that the signal CLD should be selected.
- the signal selection designation SL2 is sent to the signal selection unit 320.
- the output audio signals AOS L to AOS SR in a state where the appropriate sound field correction processing is performed on the original sound signal of the sound signal UAS are supplied to the speaker units 910 L to 910 SR .
- the correction control unit 295C sends a signal selection designation SL1 to the signal selection unit 243 indicating that the signal APD should be selected, and a signal indicating that the signal ND1 should be selected.
- the signal is sent to the signal selection unit 320 as the selection designation SL2.
- the output audio signals AOS L to AOS SR in a state where the appropriate sound field correction processing is performed on the acoustic signal NAS are supplied to the speaker units 910 L to 910 SR .
- the correction control unit 295C sends a signal selection designation SL1 to the signal selection unit 243 indicating that the signal APD should be selected, and a signal indicating that the signal ND2 should be selected.
- the signal is sent to the signal selection unit 320 as the selection designation SL2.
- the output audio signals AOS L to AOS SR in a state where the appropriate sound field correction processing is performed on the acoustic signal NAD are supplied to the speaker units 910 L to 910 SR .
- the correction measurement unit in a specific external device is a sound source device 920 acoustic signal UAS in decorated with aspects of specific sound field correction processing has processing control section 119C received from the 0 291 measures.
- the appropriate correction acquisition unit 292 in the process control unit 119C acquires the mode of the appropriate sound field correction process according to the actual sound field space ASP.
- the synchronization correction canceling unit 312 cancels the synchronization correction process in the specific sound field correction process. Is done. For this reason, pseudo surround processing is performed in a synchronized state between individual signals in the original sound signal.
- the synchronization correction process in the appropriate sound field correction process and the frequency in the appropriate sound field correction process A setting for performing the sound field correction process in a form obtained by subtracting the frequency characteristic correction process and the sound volume correction process in the specific sound field correction process from the characteristic correction process and the sound volume correction process is performed on the correction processing unit 330.
- the signal ND1 or the signal ND2 corresponding to the acoustic signal NAS or the acoustic signal NAD is subjected to pseudo surround processing. And the setting which performs an appropriate sound field correction process is performed with respect to the correction process part 330.
- the output audio signals AOS L to AOS SR are converted into the speaker units 910 L to 910 in a state where the pseudo surround processing and the sound field correction processing are appropriately performed. Can be supplied to SR .
- the correction measurement unit 291 analyzes the change in the signal UAD after the no-signal period of the signal UAD has continued for a time T P / 2 or more, whereby the sound source device it is possible to correctly measure aspects of the synchronization correction process in the 920 0.
- the types of individual sound field correction in the first to third embodiments described above are examples, and the types of individual sound field correction can be reduced, or other types of individual sound field correction can be added.
- the pink noise sound is used in the measurement of the frequency characteristic correction processing mode and the volume balance correction processing mode, but a white noise sound may be used.
- a half wave sine wave an impulse wave, a triangular wave, a sawtooth wave, a spot sine wave, or the like can be employed.
- the sound source device 920 0 for each measurement aspects of the individual sound field correction process, but the user has to specify the type of individual sound field correction to be measured, the sound source device 920 0
- the measurement of the three types of individual sound field processing is automatically performed in a predetermined order by synchronizing the generation of the acoustic signal UAS for measurement in and the measurement processing in the acoustic signal processing devices 100A, 100B, and 100C. You may make it carry out.
- the form of the acoustic signal in the above first to third embodiments is an exemplification, and the present invention can also be applied when receiving an acoustic signal of another form.
- the number of acoustic signals that are not subjected to sound field correction can be any number.
- the 4-channel surround system is adopted and the four speaker units are provided.
- the audio signal that is the read result of the audio content is separated or mixed as appropriate.
- the present invention can be applied to an acoustic signal processing device that outputs sound from three or more or five or more speakers.
- a modification similar to the modification of the second embodiment to the third embodiment can also be performed on the first embodiment.
- the pseudo surround processing performed by the pseudo surround processing unit 325 is one type.
- a plurality of types of pseudo surround processing are selected under the control of the processing control unit.
- the pseudo surround processing specified by the user may be performed.
- the plurality of types of pseudo-surround processing may include pseudo-surround processing that does not consider correlation between individual signals.
- the control unit in the above embodiment is configured as a computer system including a central processing unit (CPU: Central Processor Unit) and a DSP (Digital Signal Processor), and the functions of the control unit are realized by executing a program. You can also. These programs may be acquired in the form recorded on a portable recording medium such as a CD-ROM or DVD, or may be acquired in the form of delivery via a network such as the Internet. Good.
- CPU Central Processor Unit
- DSP Digital Signal Processor
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Abstract
Description
まず、本発明の第1実施形態を、図1~図14を参照して説明する。
図1には、第1実施形態に係る音響信号処理装置100Aの概略的な構成がブロック図にて示されている。なお、以下の説明においては、音響信号処理装置100Aは、車両CR(図2参照)に搭載される装置であるものとする。また、この音響信号処理装置100Aは、マルチチャンネルサラウンド方式の1つである4チャンネルサラウンド方式の音響信号に対する処理を行うものとする。4チャンネルサラウンド方式の音響信号とは、レフトチャンネル(以下、「Lチャンネル」という)、ライトチャンネル(以下、「Rチャンネル」という)、サラウンドレフトチャンネル(以下、「SLチャンネル」という)及びサラウンドライトチャンネル(以下、「SRチャンネル」という)の4チャンネル構成の音響信号をいうものとする。
次に、上記のように構成された音響信号処理装置100Aの動作について、主に処理制御部119Aにおける処理に着目する。
まず、音源装置9200による特定音場補正処理の態様の計測及び補正相殺部310の設定の処理について説明する。
次に、適正音場補正処理の態様の計測及び補正処理部330の設定の処理について説明する。
《再生音声の選択に対応する処理》
次に、スピーカユニット910L~910SRから再生出力する音声の選択処理について説明する。
次に、本発明の第2実施形態を、図15~図22を主に参照して説明する。
図15には、第2実施形態に係る音響信号処理装置100Bの概略的な構成がブロック図にて示されている。この図15に示されるように、音響信号処理装置100Bは、上述した第1実施形態の音響信号処理装置100A(図1参照)と比べて、制御ユニット110Aに代えて制御ユニット110Bを備える点のみが異なっている。この制御ユニット110Bは、図16に示されるように、上述した制御ユニット110A(図3参照)と比べて、出力音声データ生成部114Aに代えて出力音声データ生成部114Bを備えるとともに、処理制御部119Aに代えて処理制御部119Bを備える点が異なっている。
示させる。
次に、上記のように構成された音響信号処理装置100Bの動作について、主に処理制御部119Bにおける処理に着目する。
まず、音源装置9200による特定音場補正処理の態様の計測の処理について説明する。
次に、適正音場補正処理の態様の取得処理について説明する。
次に、スピーカユニット910L~910SRから再生出力する音声の生成処理について説明する。
次に、本発明の第3実施形態を、図23~図27を主に参照して説明する。
図23には、第3実施形態に係る音響信号処理装置100Cの概略的な構成がブロック図にて示されている。この図23に示されるように、音響信号処理装置100Cは、上述した第2実施形態の音響信号処理装置100B(図15参照)と比べて、制御ユニット110Bに代えて制御ユニット110Cを備える点のみが異なっている。この制御ユニット110Cは、図24に示されるように、上述した制御ユニット110B(図16参照)と比べて、出力音声データ生成部114Bに代えて出力音声データ生成部114Cを備えるとともに、処理制御部119Bに代えて処理制御部119Cを備える点が異なっている。
次に、上記のように構成された音響信号処理装置100Cの動作について、主に処理制御部119Cにおける処理に着目する。
本第3実施形態では、特定音場補正処理の態様の計測処理が、上述した第2実施形態の場合と同様に行われる(図20参照)。また、本第3実施形態では、適正音場補正処理の態様の取得処理が、上述した第2実施形態の場合と同様に行われる(図21参照)。
次に、スピーカユニット910L~910SRから再生出力する音声の生成処理について説明する。
本発明は、上記の第1~第3実施形態に限定されるものではなく、様々な変形が可能である。
Claims (15)
- 音場空間に音声を出力する複数のスピーカに供給される音響信号を生成する音響信号処理装置であって、
複数の外部機器のそれぞれから音響信号を受信する受信手段と;
前記複数の外部機器のうちの特定の外部機器から受信した音響信号である特定音響信号に対して施されている音場補正処理である特定音場補正処理の態様を計測する計測手段と;
前記音場空間に応じて、原音響信号に対して施されるべき音場補正処理である適正補正処理の態様を取得する取得手段と;
前記複数のスピーカに供給される音響信号として前記特定音響信号が選択された場合に、前記計測手段による計測結果及び前記取得手段による取得結果に基づいて、前記特定音響信号に対応する原音響信号に対して前記適正補正処理が施された音響信号を生成する生成手段と;
を備えることを特徴とする音響信号処理装置。 - 前記計測手段は、前記特定の外部機器が計測用音声コンテンツから生成した前記特定音響信号を解析することにより、前記特定音場補正処理の態様を計測する、ことを特徴とする請求項1に記載の音響信号処理装置。
- 前記音場補正処理には、前記複数のスピーカのそれぞれから出力される音声の同期化を図る同期補正処理が含まれ、
前記特定音場補正処理に含まれる同期補正処理の態様を前記計測手段により計測する際には、前記特定音響信号に対応する原音響信号における前記複数のスピーカのそれぞれに対応する原個別音響信号として、前記同期補正処理において前記原個別音響信号のそれぞれに付与される遅延時間の相互間における最大遅延時間差の2倍よりも長い周期で同時に発生するパルス状の信号が使用され、
前記計測手段は、前記特定の外部機器からの音響信号における個別音響信号のいずれかについて最初にパルス状の信号が検出された時点から、前記周期の1/2の時間が経過した後における前記特定音響信号に基づいて、前記同期補正処理の態様を計測する、
ことを特徴とする請求項1又は2に記載の音響信号処理装置。 - 前記音場空間内の集音位置における音声を集音する集音手段を更に備え、
前記取得手段は、前記複数のスピーカのそれぞれからテスト音声を出力した場合における前記集音手段による結果に基づいて、前記適正補正処理の態様を算出する、
ことを特徴とする1~3のいずれか一項に記載の音響信号処理装置。 - 前記生成手段は、
前記計測手段による計測結果に基づいて、前記特定音響信号に施されている音場補正処理を相殺する相殺手段と;
前記複数のスピーカに供給される音響信号として前記特定音響信号が選択された場合に、前記相殺手段による相殺結果に前記適正補正処理を施す補正手段と;
を備えることを特徴とする請求項1~4のいずれか一項に記載の音響信号処理装置。 - 前記特定の外部機器以外の外部機器から受信した音響信号は、音場補正処理が施されていないことが既知の無補正音響信号であり、
前記複数のスピーカに供給される音響信号として前記無補正音響信号が選択された場合に、前記無補正音響信号が前記補正手段に供給され、前記補正手段が前記無補正音響信号に対して前記適正補正処理を施す、
ことを特徴とする請求項5に記載の音響信号処理装置。 - 前記生成手段は、前記複数のスピーカに供給される音響信号として前記特定音響信号が選択された場合に、前記適正補正処理と前記特定補正処理との差分に対応する音場補正処理を前記特定音響信号に対して施す補正手段を備える、ことを特徴とする請求項1~4のいずれか一項に記載の音響信号処理装置。
- 前記特定の外部機器以外の外部機器から受信した音響信号は、音場補正処理が施されていないことが既知の無補正音響信号であり、
前記複数のスピーカに供給される音響信号として前記無補正音響信号が選択された場合に、前記補正手段が前記無補正音響信号に対して前記適正補正処理を施す、
ことを特徴とする請求項7に記載の音響信号処理装置。 - 前記音場補正処理には、前記複数のスピーカのそれぞれから出力される音声の同期化を図る同期補正処理が含まれ、
前記生成手段は、
前記計測手段による計測結果に基づいて、前記特定補正処理に含まれる同期補正処理を相殺する同期補正相殺手段と;
前記複数のスピーカに供給される音響信号として前記特定音響信号が選択された場合に、前記同期補正相殺手段による相殺結果に対して所定の擬似サラウンド処理を施す擬似サラウンド処理手段と;
前記擬似サラウンド処理手段による処理結果に対して、前記適正補正処理に含まれる同期補正処理以外の補正処理と、前記特定補正処理に含まれる同期補正処理以外の補正処理との差分に対応する補正処理を施すとともに、前記擬似サラウンド処理手段による処理結果に対して前記適正補正処理に含まれる同期補正処理を施す補正手段と;を備える、
ことを特徴とする請求項1~4のいずれか一項に記載の音響信号処理装置。 - 前記特定の外部機器以外の外部機器から受信した音響信号は、音場補正処理が施されていないことが既知の無補正音響信号であり、
前記複数のスピーカに供給される音響信号として前記無補正音響信号が選択された場合に、前記無補正音響信号が前記擬似サラウンド処理手段に供給され、
前記補正手段が前記擬似サラウンド処理手段による処理結果に対して、前記適正補正処理を施す、
ことを特徴とする請求項9に記載の音響信号処理装置。 - 前記音場補正処理には、前記複数のスピーカのそれぞれからの出力音量のバランスを補正する音量バランス補正処理、及び、前記複数のスピーカのそれぞれに供給される音響信号の周波数特性を補正する周波数特性補正処理の少なくとも一方が含まれる、ことを特徴とする請求項1~10のいずれか一項に記載の音響信号処理装置。
- 移動体に搭載される、ことを特徴とする請求項1~11のいずれか一項に記載の音響信号処理装置。
- 音場空間に音声を出力する複数のスピーカに供給される音響信号を生成する音響信号処理方法であって、
複数の外部機器のうちの特定の外部機器から受信した音響信号である特定音響信号に対して施されている音場補正処理である特定音場補正処理の態様を計測する計測工程と;
前記音場空間に応じて、原音響信号に対して施されるべき音場補正処理である適正補正処理の態様を取得する取得工程と;
前記複数のスピーカに供給される音響信号として前記特定音響信号が選択された場合に、前記計測工程における計測結果及び前記取得工程における取得結果に基づいて、前記特定音響信号に対応する原音響信号に対して前記適正補正処理が施された音響信号を生成する生成工程と;
を備えることを特徴とする音響信号処理方法。 - 請求項13に記載の音響信号処理方法を演算手段に実行させる、ことを特徴とする音響信号処理プログラム。
- 請求項14に記載の音響信号処理プログラムが、演算手段により読み取り可能に記録されている、ことを特徴とする記録媒体。
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Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9084058B2 (en) | 2011-12-29 | 2015-07-14 | Sonos, Inc. | Sound field calibration using listener localization |
US9668049B2 (en) | 2012-06-28 | 2017-05-30 | Sonos, Inc. | Playback device calibration user interfaces |
US9706323B2 (en) | 2014-09-09 | 2017-07-11 | Sonos, Inc. | Playback device calibration |
US9690539B2 (en) | 2012-06-28 | 2017-06-27 | Sonos, Inc. | Speaker calibration user interface |
US9106192B2 (en) | 2012-06-28 | 2015-08-11 | Sonos, Inc. | System and method for device playback calibration |
US9690271B2 (en) | 2012-06-28 | 2017-06-27 | Sonos, Inc. | Speaker calibration |
US9219460B2 (en) | 2014-03-17 | 2015-12-22 | Sonos, Inc. | Audio settings based on environment |
US8930005B2 (en) * | 2012-08-07 | 2015-01-06 | Sonos, Inc. | Acoustic signatures in a playback system |
US9264839B2 (en) | 2014-03-17 | 2016-02-16 | Sonos, Inc. | Playback device configuration based on proximity detection |
US9891881B2 (en) | 2014-09-09 | 2018-02-13 | Sonos, Inc. | Audio processing algorithm database |
US9910634B2 (en) | 2014-09-09 | 2018-03-06 | Sonos, Inc. | Microphone calibration |
US9952825B2 (en) | 2014-09-09 | 2018-04-24 | Sonos, Inc. | Audio processing algorithms |
US10127006B2 (en) | 2014-09-09 | 2018-11-13 | Sonos, Inc. | Facilitating calibration of an audio playback device |
WO2016172593A1 (en) | 2015-04-24 | 2016-10-27 | Sonos, Inc. | Playback device calibration user interfaces |
US10664224B2 (en) | 2015-04-24 | 2020-05-26 | Sonos, Inc. | Speaker calibration user interface |
US9538305B2 (en) | 2015-07-28 | 2017-01-03 | Sonos, Inc. | Calibration error conditions |
WO2017049169A1 (en) | 2015-09-17 | 2017-03-23 | Sonos, Inc. | Facilitating calibration of an audio playback device |
US9693165B2 (en) | 2015-09-17 | 2017-06-27 | Sonos, Inc. | Validation of audio calibration using multi-dimensional motion check |
US9743207B1 (en) | 2016-01-18 | 2017-08-22 | Sonos, Inc. | Calibration using multiple recording devices |
US11106423B2 (en) | 2016-01-25 | 2021-08-31 | Sonos, Inc. | Evaluating calibration of a playback device |
US10003899B2 (en) | 2016-01-25 | 2018-06-19 | Sonos, Inc. | Calibration with particular locations |
US9860662B2 (en) | 2016-04-01 | 2018-01-02 | Sonos, Inc. | Updating playback device configuration information based on calibration data |
US9864574B2 (en) | 2016-04-01 | 2018-01-09 | Sonos, Inc. | Playback device calibration based on representation spectral characteristics |
US9763018B1 (en) | 2016-04-12 | 2017-09-12 | Sonos, Inc. | Calibration of audio playback devices |
US9794710B1 (en) | 2016-07-15 | 2017-10-17 | Sonos, Inc. | Spatial audio correction |
US9860670B1 (en) | 2016-07-15 | 2018-01-02 | Sonos, Inc. | Spectral correction using spatial calibration |
US10372406B2 (en) | 2016-07-22 | 2019-08-06 | Sonos, Inc. | Calibration interface |
US10459684B2 (en) | 2016-08-05 | 2019-10-29 | Sonos, Inc. | Calibration of a playback device based on an estimated frequency response |
US10299061B1 (en) | 2018-08-28 | 2019-05-21 | Sonos, Inc. | Playback device calibration |
US11206484B2 (en) | 2018-08-28 | 2021-12-21 | Sonos, Inc. | Passive speaker authentication |
US10734965B1 (en) | 2019-08-12 | 2020-08-04 | Sonos, Inc. | Audio calibration of a portable playback device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0787598A (ja) * | 1993-08-13 | 1995-03-31 | Blaupunkt Werke Gmbh | ステレオ再生装置 |
JP2006262181A (ja) * | 2005-03-17 | 2006-09-28 | Alpine Electronics Inc | オーディオ信号処理装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4193715B2 (ja) * | 2004-02-04 | 2008-12-10 | ヤマハ株式会社 | 音響調整システムおよび音響調整装置 |
JP2007255971A (ja) * | 2006-03-22 | 2007-10-04 | Sony Corp | 車載用電子機器、車載用電子機器の動作制御方法 |
JP4760524B2 (ja) * | 2006-05-16 | 2011-08-31 | ソニー株式会社 | コントロール機器、ルーティング検証方法およびルーティング検証プログラム |
-
2008
- 2008-02-29 WO PCT/JP2008/053616 patent/WO2009107227A1/ja active Application Filing
- 2008-02-29 JP JP2010500501A patent/JPWO2009107227A1/ja active Pending
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0787598A (ja) * | 1993-08-13 | 1995-03-31 | Blaupunkt Werke Gmbh | ステレオ再生装置 |
JP2006262181A (ja) * | 2005-03-17 | 2006-09-28 | Alpine Electronics Inc | オーディオ信号処理装置 |
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