WO2005079114A1 - 音響再生装置及びスピーカの位置特定方法 - Google Patents
音響再生装置及びスピーカの位置特定方法 Download PDFInfo
- Publication number
- WO2005079114A1 WO2005079114A1 PCT/JP2005/002833 JP2005002833W WO2005079114A1 WO 2005079114 A1 WO2005079114 A1 WO 2005079114A1 JP 2005002833 W JP2005002833 W JP 2005002833W WO 2005079114 A1 WO2005079114 A1 WO 2005079114A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- speaker
- speakers
- measurement
- distance
- sensors
- Prior art date
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
- H04R2205/024—Positioning of loudspeaker enclosures for spatial sound reproduction
Definitions
- the present invention relates to a sound reproducing apparatus for performing multi-channel sound reproduction, and particularly to an effective sound by detecting a position of a speaker in a secondary or three-dimensional manner.
- the present invention relates to a sound reproducing apparatus and a speaker position specifying method capable of realizing field correction.
- Patent Document 1 Japanese Patent Application Laid-Open No. 111-13099
- the sound image localization adjustment device of Patent Document 1 uses a one-dimensional detection method of measuring the distance from an amplifier to a speaker by the length of a speaker cable. The position of the loudspeaker is detected, and the position of the loudspeaker is not detected secondarily or three-dimensionally. Therefore, the sound image localization adjustment device of Patent Document 1 cannot determine the angle of each speed force with respect to the optimum listening position, so that even if the angle is significantly different from the recommended position, an inappropriate placement of the speaker is detected. Therefore, there is a problem that only insufficient sound image localization correction processing can be performed. Disclosure of the invention
- the present invention has been made in order to solve the above-described problems, and has an audio reproducing apparatus and a speaker position specifying method capable of detecting a position of a speaker in a secondary or three-dimensional manner to perform a sound field correction.
- the purpose is to provide.
- the present application is characterized by having the following configuration.
- At least two sensors arranged at a viewing position, each transmitting a reception notification when receiving a measurement sound wave emitted from the speaker to be detected in response to the measurement signal;
- a time difference measuring unit that measures a time difference between a time when the measurement signal is generated and a time when a reception notification is received from each sensor for each of the at least two sensors; and the at least two time differences based on the measured time difference.
- Distance calculating means for calculating the distance between the sensor of interest and the speaker to be detected for each of the at least two sensors;
- Position calculating means for calculating the position of the speaker to be detected based on the distance between the at least two sensors and the calculated distance
- Storage means for storing the calculated position of the speaker.
- a sound reproducing device comprising a speaker arrangement correcting means for correcting.
- An acoustic reproduction apparatus comprising: a sound field control unit that realizes sound image localization as if each speaker is at a predetermined recommended position based on the position of each speaker stored in the storage unit.
- a distance between at least two speakers of the plurality of speakers is known;
- the position calculating means is configured to calculate a distance between the at least two sensors based on the distance between the at least two sensors and the at least two speakers calculated by the distance calculating means and the distance between the at least two speakers. And a position of the at least two sensors.
- Generating means for generating a measurement signal and sequentially supplying the measurement signal to at least two measurement speakers having a known position with respect to a viewing position among the plurality of speakers;
- a sensor for transmitting a reception notification when receiving a measurement sound wave emitted from the measurement speaker in response to the measurement signal, for each of the at least two measurement speakers,
- a time difference measuring unit that measures a time difference between a time when the measurement signal is generated and a time when a reception notification is received from the sensor for each of the at least two measurement speakers;
- Distance calculation means for calculating a distance between the measurement speaker and the speaker to be detected based on the measured time difference for each of the at least two speakers; and a distance between the at least two measurement speakers.
- Position calculating means for calculating the position of the speaker to be detected based on the calculated distance;
- a sound reproducing apparatus comprising: at least two measurement speakers and storage means for storing the calculated positions of the speakers.
- a sound reproducing device comprising a speaker arrangement correcting means for correcting.
- An acoustic reproduction apparatus comprising: a sound field control unit that realizes sound image localization as if each speaker is at a predetermined recommended position based on the position of each speaker stored in the storage unit.
- Storing means for storing the calculated speaker position (9)
- the method of (8) further comprises, when it is determined that the stored position of each of the speakers is contrary to a predetermined relative positional relationship of each of the speaker forces, the signal wiring from the amplifier to each of the speakers. Switching to correct for speaker misalignment.
- the method of (8) further includes a step of realizing a sound image localization as if the valley speech force were at a predetermined recommended position based on the stored positions of the speakers.
- the method characterized by the above.
- FIG. 1 is a block diagram showing a configuration of a sound reproducing device according to a first embodiment of the present invention.
- FIG. 2 is a block diagram showing a configuration of a sensor in the sound reproducing device according to the first embodiment of the present invention.
- FIG. 3 is a flowchart showing a sound field correction process by the sound reproducing device according to the first embodiment of the present invention.
- FIG. 4 is a diagram illustrating a process of calculating the distance between the speaker and the sensor according to the first embodiment of the present invention.
- FIG. 5 is a flowchart showing a process when the viewing position is changed in the second embodiment of the present invention.
- FIG. 6 is a diagram for explaining a process when the viewing position is changed in the second embodiment of the present invention.
- FIG. 7 is a block diagram showing a configuration of a sound reproducing device according to a third embodiment of the present invention.
- FIG. 8 is a block diagram showing a configuration of a sensor in the sound reproducing device according to the third embodiment of the present invention.
- FIG. 9 is a flowchart showing a sound field correction process by the sound reproducing device according to the third embodiment of the present invention.
- FIG. 10 is a diagram illustrating a speaker position detection process according to the fourth embodiment of the present invention.
- FIG. 11 is a flowchart showing a sound field correction process by the sound reproducing device according to the fourth embodiment of the present invention.
- FIG. 1 is a block diagram showing a configuration of a sound reproducing device according to a first embodiment of the present invention.
- the sound reproducing apparatus shown in FIG. 1 has a sensor 1 (1, 1, 1) for detecting the positions of speakers SP—C, SP-L, SP-R, SP-RL, SP-RR, SP-RC, and SP—SW. 1) 2) and multi-channel amplifier 2.
- the multi-channel amplifier 2 includes a decoder 20, a multiplexer 21, a sound field processing unit 22, a switching switch 23, a power amplifier 24, a measurement signal generation unit 25, a reference signal transmission unit 26, and a reception unit 27. , A position calculation unit 28, a position table 29, a speaker arrangement correction unit 30, and a sound field control unit 31.
- the measurement signal generator 25 constitutes a generator
- the reference signal transmitter 26 constitutes a transmitter
- the position calculator 28 constitutes a distance calculator and a position calculator
- the position taker 29 stores a memory.
- the speaker arrangement correction unit 30 and the multiplexer 21 constitute a speaker arrangement correction unit
- the sound field control unit 31 and the sound field processing unit 22 constitute a sound field control unit.
- FIG. 2 is a block diagram showing a configuration of the sensor 1 (111, 1-2).
- the sensor 1 includes a receiving unit 10, a microphone 11, a time difference measuring unit 12, and a transmitting unit 13.
- a 6.1-channel digital surround system will be described as an example.
- the listening room there are a main speaker SP—SP—R, a rear speaker SP—R—SP—RR, a center speaker SP—C, a rear center speaker SP—RC, and a sub-speaker.
- SP—R main speaker
- R—R—SP—RR rear speaker
- SP—C center speaker
- RC rear center speaker
- sub-speaker sub-speaker
- the decoder 20 of the multi-channel amplifier 2 outputs the main signal L ( Left (left), R (right), rear signal RL (rear left), RR (rear left), center signal C (center), rear center signal RC (rear center), subwoofer signal LFE (low frequency) Generate.
- the main signal R, the rear signals RL and RR, the center signal C and the rear center signal RC are amplified by the power amplifier 24 through the multiplexer 21, the sound field processing unit 22 and the switching switch 23, and are respectively amplified by the main speaker SP— L, SP—R, rear speakers SP—RL, SP—RR, center speaker SP—C, rear center speaker SP—RC.
- the subwoofer signal LFE is supplied to a subwoofer SP-SW including an amplifier through a multiplexer 21, a sound field processing unit 22, and a switching switch 23. Thus, 6.1-channel playback is performed.
- FIG. 3 is a flowchart showing the sound field correction processing of the present embodiment.
- the viewer installs the sensors 111 and 1-2 in the listening room. At this time, the listening position LP is set between the sensors 1-1 and 1-2.
- the measurement signal generator 25 of the multi-channel amplifier 2 generates a first measurement signal for detecting the speaker position (step 101 in FIG. 3).
- the switch 23 supplies the measurement signal to the center speaker (measurement speaker) SP-C and does not supply the signal to the other speakers.
- a measurement signal is supplied to only the left speaker SP-CL of the center speaker SP-C by a switch (not shown) in the center speaker SP-C, and a measurement signal is supplied to the right speaker SP-CR.
- the reference signal transmitter 26 of the multi-channel amplifier 2 transmits the reference signal (second measurement signal) to the sensors 1-1 and 1-2 simultaneously with the generation of the measurement signal (step 102).
- the reference signal include an infrared ray and a radio wave. The transmission of the reference signal may be performed by wire.
- the receiving unit 10 of the sensor 1-1 receives the reference signal transmitted from the multi-channel amplifier 2, and then the microphone 11 transmits the measurement signal (measurement wave) emitted from the speaker SP-CL. Receive (Step force 03). Then, the time difference measuring section 12 of the sensor 11 1 measures the time difference between the time at which the reference signal was received and the time at which the measurement sound wave was received, notifies the transmitting section 13 of the measured time difference, and 13 notifies the multichannel amplifier 2 of this time difference by a notification signal (step 104).
- the notification signal includes, for example, infrared rays and radio waves. The transmission of the notification signal may be performed by wire.
- the measurement of the time difference may be performed by simply measuring the time difference between the rise of the received reference signal and the rise of the measurement sound wave by using impulse signals for the reference signal and the measurement sound wave, respectively.
- the time difference may be measured from the phase difference between the received reference signal and the measurement sound wave by using a periodic signal such as a sine wave as the measurement sound wave.
- the measurement of the time difference as described above is similarly performed for the sensors 1-2.
- the sensor 1_1, 1-2 it is necessary to send identification information in a notification signal.
- the receiving unit 27 of the multi-channel amplifier 2 receives the notification signal from each of the sensors 11 1 and 1-2, and notifies the position calculation unit 28 of the time difference notified by the notification signal.
- the position calculation unit 28 calculates the distance between the speaker 8 and the sensor 11 based on the time difference and the sound speed measured by the sensor 1-1, and calculates the distance between the speaker 8 and the sensor 11 based on the time difference and the sound speed measured by the sensor 1-2. Then, the distance between the speaker SP-CL and the sensor 112 is calculated (step 105).
- FIG. 4 is a diagram for explaining the process of calculating the distance between the speaker and the sensor.
- the distance between sensor 1 and multi-channel amplifier 2 is sufficiently shorter than the distance that the electromagnetic wave travels per unit time, the time when the reference signal was transmitted from multi-channel amplifier 2 and this reference signal were used as sensors 1-1, The time difference from the time when the time reaches 1 to 2 can be regarded as almost zero.
- the distance between the speaker and the multi-channel amplifier 2 is sufficiently shorter than the distance that the electric signal travels per unit time, so that the time when the measurement signal is generated and the measurement signal are transmitted to the speaker SP-CL. The time difference from the arrival time can be regarded as almost zero.
- the distance L11 between the speaker SP-CL and the sensor 11 can be calculated based on the time difference and the sound speed measured by the sensor 11, and the distance L11 between the speaker SP-CL and the sensor 11 can be calculated.
- the distance L12 between the speaker SP-CL and the sensor 1-2 can be calculated based on the distance.
- the process returns to step 101, and the processing up to step 105 is repeated.
- the measurement signal is supplied only to the right speaker SP-CR of the center speakers SP-C, and the measurement signal is not supplied to the left speaker SP-CL.
- the position calculating unit 28 of the multi-channel amplifier 2 calculates the distance L13 between the speed SP—CR and the sensor 111 based on the time difference and the sound speed measured by the sensor 111, and calculates the sensor 1-2. Time difference measured in The distance LI 4 between the speaker SP—CR and the sensor 1-2 is calculated based on the speed and the sound speed (step 105). After the distance calculation is completed (YES in step 106), the position calculation unit 28 uses the triangulation from the known distance LO between the loudspeakers SP-CL and SP-CR and the calculated distances L11 and L13 to determine the center.
- the position of the center speaker SP-C is an intermediate position between the speakers SP-CL and SP-CR.
- the distance Lx between the sensors 1-1 and 1-2 is determined.
- the viewing position LP is between the sensors 1-1 and 1-2, the viewing position LP can be determined, and the viewing position LP and the sensor 1- Based on the positions of 1, 1-2, the position of the center speaker SP-C with respect to the viewing position LP can be obtained.
- the position calculator 28 stores the positions of the sensors 1-1 and 1-2 and the speaker SP-C with respect to the viewing position LP, and the distance Lx between the sensors 11 and 1-2 in the position table 29. . Next, the positions of the other speakers SP-R, SP-RL, SP-RR, SP-RC, SP-SW are detected.
- the measurement signal generator 25 of the multi-channel amplifier 2 generates a measurement signal for speaker position detection (step 108). At this time, when the main speaker SP-L is used as the detection target speed, the switching switch 23 supplies a measurement signal to the speaker SP-L and does not supply a signal to the other speakers. I do.
- the processing of step 109-111 is the same as that of steps 102 to 104, and receives the time when the reference signal transmitted from the multi-channel amplifier 2 was received and the measurement sound wave radiated from the speaker SP-L. The time difference from the set time is measured by the sensors 11 1 and 11 2 and is notified to the multi-channel amplifier 2 by the notification signal.
- the receiving unit 27 of the multi-channel amplifier 2 receives the notification signal from each of the sensors 11 1 and 11 and notifies the position calculation unit 28 of the time difference notified by the notification signal.
- the position calculator 28 calculates a distance L15 between the speaker SP-L and the sensor 1-1 based on the time difference and the sound speed measured by the sensor 1-1, and calculates the time difference and the sound speed measured by the sensor 1-2. Calculate the distance L16 between the speaker SP and the sensor 1-2 based on the distance (step 1 1 2)
- the position calculating unit 28 uses the triangulation method based on the distance Lx between the sensors 11 1 and 1-2 stored in the position
- the position of the main speaker SP-L with respect to 1, 1-2 is calculated, and the main speaker with respect to the listening position LP is calculated based on the calculation result and the positions of the sensors 1-1, 1-2 stored in the position table 29.
- the position of SP-L is calculated, and the position of speaker SP-L is stored in position table 29 (step 113).
- the processing of steps 108 to 113 as described above is sequentially performed for the other speakers SP-R, SP-RL, SP-RR, SP-RC, and SP-SW.
- the speaker arrangement correction unit 30 adjusts each speaker SP-L, SP-R SP-RL, SP-RR, and SP-L stored in the position table 29.
- SP—C, SP—RC, Sub ⁇ C Based on the position of the SP-SW, it is determined whether or not there is an error in the relative positional relationship between the speakers (step 115). This determination process roughly determines the correctness of the arrangement of each speaker. For example, there are predetermined rules for the relative positional relationship of each speaker, such as the main speaker SP-L is to the left of the center speaker SP-C and the rear speaker SP-RL is to the rear of the main speaker SP-L. Yes, and determine if each speed is placed according to this rule.
- the speaker placement correction unit 30 controls the multiplexer 21 to switch the wiring, and corrects the placement of the speakers (step 116). For example, when the main speakers SP-L and SP-R are arranged in reverse, the main signals L and R input from the decoder 20 to the sound field processing unit 22 via the multiplexer 21 are exchanged. This makes it possible to correct the misplacement of the speakers SP-L and SP-R.
- the sound field processing unit 22 responds to the main signal R, the rear signals RL and RR, the center signal C, the rear center signal RC and the sub wafer signal LFE input from the decoder 20 via the multiplexer 21. Various sound field processing is performed as needed.
- the sound field control unit 31 controls the sound field processing unit 22 to Sound field correction is performed to achieve sound image localization as if each speaker were at the recommended position (step 117).
- This sound field correction can be realized by adjusting the delay time, gain, and the like of each signal input from the multiplexer 21 by the sound field processing unit 22.
- the position of each speaker is detected secondarily, and Since the sound field correction is performed based on the sound field, a sufficient multi-channel sound reproduction effect can be obtained even if the position of each speaker is greatly different from the recommended position.
- SP-R SP-R. SP-RL, SP- RR , SP-C, SP-RC, sub-SP C
- the position of SP-SW may be detected by the processing of steps 108 to 114.
- FIG. 5 is a flowchart showing a process for changing the viewing position LP.
- the viewer installs the sensor 11 at the changed viewing position LP 'as shown in FIG. At this time, the sensors 1-2 need not be installed.
- the measurement signal generator 25 of the multi-channel amplifier 2 generates a measurement signal for detecting the speaker position (Step 201 in FIG. 5). At this time, the switching switch 23 supplies the measurement signal to the center speaker SP-C and does not supply the signal to the other speakers. Also, it is assumed that the measurement signal is supplied only to the left speaker SP-CL of the center speakers SP-C, and the measurement signal is not supplied to the right speaker SP-CR.
- the processing of steps 202 to 204 is the same as steps 102 to 104 in FIG.
- the position calculation unit 28 based on the time difference and sound speed measured by the sensor 1-1, detects the speaker SP-CL and the sensor. Then, the distance L11 to the distance 111 is calculated (step 205).
- the processing up to step 205 is repeated.
- the position calculator 28 calculates the distance L13 between the speaker SP-CR and the sensor 1-1 based on the time difference and the sound speed measured by the sensor 11 (step 205).
- the position calculation unit 28 uses the triangular method to calculate the center speaker from the known distance L0 between the speakers SP-CL and SP-CR and the calculated distances L11 and L13.
- the position of the sensor 111 (viewing position LP ') with respect to SP-C is calculated (step 207).
- the position of each speaker SP_L, SP-R, SP-RL, SP-RR, SP-C, SP-RC, and subwoofer SP-SW with respect to the listening position LP before the change is stored in the position table 29.
- the position calculation unit 28 calculates the position of each speaker with respect to the changed viewing position LP 'based on the position of each speaker stored in the position table 29 and the calculated position of the sensor 1-1.
- the position of each speaker stored in 29 is updated (step 208).
- the sound field control unit 31 controls the sound field processing unit 22 to perform sound field correction based on the position of each speaker stored in the position table 29 (step 209). This sound field correction process is the same as step 1 17 in FIG.
- the switching switch 23 is manually controlled based on the specification of the viewer, and the processing of steps 201 to 206 is performed using another speed with no obstacle between the viewer and the viewing position LP '. And then detect the position of the sensor 1-1.
- the number of loudspeakers required to detect the position of the sensor 11 is at least two.
- the position of sensor 1-1 can be automatically detected even if there is an obstacle between a certain speaker and the changed viewing position LP '. It is. For example, there are six combinations when measuring by selecting two speakers from four speakers each. Therefore, the position calculation unit 28 performs the processing of steps 201 to 207 for each of these six combinations, and when the positions of the sensors 1-1 calculated for each combination substantially match (these positions are not equal). If the mutual error is within a predetermined threshold value), this position is adopted as a correct value. On the other hand, if the positions of the sensors 111 calculated in the three combinations are substantially the same and the positions of the sensors 1-1 calculated in the remaining combinations are largely different, the positions of the substantially matched sensors 111 are determined. Adopt as correct value.
- the position calculation unit 28 selects four speakers of a different combination from the four speakers used for the measurement, executes the processing of steps 201 to 207, and makes the positions of the sensors 11 substantially coincide with each other. Make sure that there are three or more speaker combinations.
- FIG. 7 shows a third embodiment of the present invention.
- FIG. 2 is a block diagram showing a configuration of a sound reproducing apparatus according to an embodiment of the present invention, and the same reference numerals are given to the same components as those in FIG.
- the sound reproducing apparatus shown in FIG. 7 includes a sensor 1a (1a-1, la-2) and a multi-channel amplifier 2a.
- the time difference measurement for calculating the distance between the speaker and the sensor is performed by the sensor 1.
- the time difference measurement unit 32 is provided in the multi-channel amplifier 2a to measure the time difference. Is performed.
- FIG. 8 is a block diagram showing the configuration of the sensor 1a (1a-1, 1a-2).
- the sensor 1a has a microphone 11 and a transmission unit 13a.
- FIG. 9 is a flowchart showing the sound field correction processing of the present embodiment.
- the viewer installs the sensors l a-1 and l a-2 in the listening room so that the viewing position LP is located between the sensors 1 a-1 and 1 a-2.
- step 301 in FIG. 9 The processing in step 301 in FIG. 9 is the same as that in step 101 in FIG. 3, and a measurement signal is supplied from the measurement signal generator 25 of the multi-channel amplifier 2a to the speaker SP-CL.
- the transmission section 13a of the sensor 1a-1 receives the measurement signal (measurement sound wave) radiated from the speaker SP-CL by the microphone 11, the reception section 13 reminds the reception of the measurement sound wave by the notification signal.
- the multi-channel amplifier 2a is notified (step 302). Such a reception notification is similarly performed from the sensor 1a-2.
- the receiving unit 27 of the multi-channel amplifier 2a notifies the time difference measuring unit 32 of the reception.
- the time difference measurement unit 32 receives the time when the measurement signal is generated from the measurement signal generation unit 25 and the time from the sensor 1a-1. The time difference between the time when the notification was received and the time when the signal for measurement was generated and the time when the reception notification was received from Sensor 1a-2 were measured, and the position of the measured time difference was calculated. Inform part 28 (step 303). Here, the calculation of the distance between the speaker and the sensor will be described. As described with reference to FIG. 4, the time difference between the time when the measurement signal is generated and the time when the signal for measurement reaches the speaker SP-CL is almost equal. Can be regarded as zero.
- the position calculating unit 28 calculates the distance between the speaker SP-CL and the sensor 1a-1 based on the time difference between the time when the measurement signal is generated and the time when the reception notification is received from the sensor 1a-1. Based on the time difference between the time when the measurement signal is generated and the time when the reception notification is received from the sensor 1a-2, the distance L1 2 between the speaker SP-CL and the sensor la-2 is calculated based on the speed of sound. Is calculated (step 304). Subsequently, the process returns to step 301, and the processing up to step 304 is repeated.
- the measurement signal is supplied only to the right speaker SP-CR of the center speakers SP-C, and no measurement signal is supplied to the left speaker SP-CL.
- the position calculation unit 28 calculates the speaker SP—CR and the sensor 1a based on the time difference between the time when the measurement signal is generated from the measurement signal generation unit 25 and the time when the reception notification is received from the sensor 1a-1, and the sound speed. — Calculate the distance from 1 and the speaker SP—CR and sensor 1a—2 based on the time difference between the time when the measurement signal is generated and the time when the reception notification is received from the sensor 1a—2, and the sound speed. Is calculated (step 304). After the distance calculation is completed (YES in step 305), the position calculating unit 28 determines the positions of the sensors 1a-1 and 1a-2 and the speaker SP-C with respect to the viewing position LP, the sensors 1a-1 and 1a-1.
- step 306 The distance Lx between the two is calculated and stored in the position table 29 (step 306). This The processing in step 306 is the same as step 107 in FIG. Next, the positions of the other speakers SP-R, SP-RL, SP-RR, SP-RC, SP-SW are detected.
- step 307 in FIG. 9 is the same as step 108 in FIG.
- the processing in steps 308 and 309 is the same as that in steps 302 and 303, respectively.
- the reception is notified.
- the multi-channel amplifier 2a is notified by the measurement signal, and the time difference measurement unit 32 of the multi-channel amplifier 2a notifies the time when the measurement signal is generated from the measurement signal generation unit 25 and the reception notification from the sensor 1a-1. Measure the time difference from the received time and measure the time difference between the time when the measurement signal is generated and the time when the reception notification is received from the sensor 1a-2.
- the position calculation unit 28 calculates the distance L15 between the speaker SP-L and the sensor 1a-1 based on the time difference between the time when the measurement signal is generated and the time when the reception notification is received from the sensor 1a-1 and the speed of sound. Is calculated, and the distance L16 between the speaker SP-L and the sensor 1a-2 is calculated based on the time difference between the time when the measurement signal is generated and the time when the reception notification is received from the sensor 1a-2, and the sound speed. (Step 310). Subsequently, the position calculation unit 28 uses triangulation from the distance Lx between the sensors 1 a-1 and 1 a-2 stored in the position table 29 and the calculated distances L1 5 and L1 6 using triangulation.
- the position of the main speaker SP-L with respect to la-1 and la-1-2 is calculated, and the viewing position is determined based on the calculation result and the positions of the sensors 1a-1 and 1a-2 stored in the position table 29.
- the position of the main speaker SP-L with respect to the LP is calculated, and the position of the speaker SP-L is stored in the position table 29 (step 311).
- the processing of steps 307 to 311 as described above is sequentially performed for the other speakers SP-R, SP-R, and SP-RR, SP-RC, and SP-SW.
- steps 31 3, 31 4, 31 5 is the same as that of steps 1 15, 1 16, 1 17 in FIG. 3, respectively.
- the same effect as in the first embodiment can be obtained by performing the time difference measurement for calculating the distance between the speaker and the sensor by the multi-channel amplifier 2a.
- FIG. 10 is a diagram for explaining the speaker position detection processing of the present embodiment. Since the configuration of the multi-channel amplifier is the same as that of the third embodiment, it will be described using the reference numerals in FIG. In the present embodiment, it is assumed that the position of the center speaker SP-C with respect to the viewing position LP is set in the position table 29 of the multi-channel amplifier 2a by the viewer in advance.
- the cabinets for the speakers SP-L, SP-R, SP-RL, SP-RR, SP-RC, and SP-SW have sensors 1b-L, 1bR, 1b- RL, I b-RR, I b-RC, 1 b— Sensor 1 b-then 1 bR, 1 b
- the configuration of -RL, 1b-RR, Ib-RC, 1b-SW is the same as that of the sensor la shown in FIG. Since the position of the center speaker SP-C is known, there is no need to provide a sensor.
- these sensors may use a speaker to be mounted as a microphone, receive a measurement signal, and send the measurement signal to the multi-channel amplifier 2a using a speaker cable.
- step 401 in FIG. 11 is a flowchart showing the sound field correction processing of the present embodiment.
- the process of step 401 in FIG. 11 is the same as step 101 in FIG. 3, and supplies a measurement signal from the measurement signal generator 25 of the multi-channel amplifier 2a to the speaker SP-CL.
- the sensor 1 b—L of the main speaker SP—L receives a notification signal that the measurement sound wave has been received.
- the multi-channel amplifier 2a is notified (step 402).
- the time difference measurement unit 32 of the multi-channel amplifier 2a measures the time difference between the time when the measurement signal is generated from the measurement signal generation unit 25 and the time when the reception notification is received from the sensor 1b-L via the reception unit 27. Then, the measured time difference is notified to the position calculating unit 28 (step 403).
- the position calculating unit 28 calculates the distance L17 between the speaker SP-CL and the sensor lb-L based on the measured time difference and sound speed (step 403). 404).
- the process returns to step 401 and repeats the processing up to step 404.
- the measurement signal is supplied only to the right speaker SP-CR of the center speakers SP-C, and no measurement signal is supplied to the left speaker SP-CL.
- the position calculator 28 calculates the distance L18 between the speaker SP-CR and the sensor 1b-L based on the time difference and the sound speed measured by the time difference measuring unit 32 (step 404). After calculating the distance from each of the speakers SP—CL and SP—GR to the sensor lb—L (YES in step 405), the position calculator 28 calculates the known distance LO between the speakers SP—CL and SP—CR.
- the position of the sensor 1b-L relative to the center speaker SP-C is calculated from the calculated distances L17, L18 using trigonometry (step 406). Since the position of the center speaker SP-C with respect to the viewing position LP is stored in the position table 29, the position of the main speaker SP-L with respect to the viewing position LP can be obtained.
- the position calculator 28 stores the position of the main speaker SP-L in the position table 29. As described above, the processing of steps 401 to 406 for detecting the position of the speaker using the speakers SP—CL and SP—CR is performed by using the other speakers SP—R, SP-RL, SP-RR, SP-RC, Performs sequentially for SP-SW.
- step 407 After the calculation of the position of each speaker is completed (YES in step 407), the process proceeds to step 408.
- the processing of steps 408, 409, 410 is the same as steps 115, 116, 117 of FIG. 3, respectively.
- the first speaker SP-CL and SP-CR whose positions with respect to the viewing position LP are known are used to detect the position of the other speaker to which the sensor is attached, thereby obtaining the first position. The same effect as the embodiment can be obtained.
- the senor is attached to the speakers SP-G and SP-GR, and the measurement signal is supplied to the speakers SP-R SP-R, SP-SW, SP-R and SP-RC, SP-RR. It may be configured to supply to With this configuration, for example, when measuring the position of the speaker SP-L, a measurement signal is supplied from the measurement signal generator 25 to the speaker SP-L, and the measurement signal is radiated from the speaker SP-L. The measurement signal (measurement sound wave) is received by the sensor attached to the speaker SP-GL.
- the time difference measurement unit 32 measures the time difference between the time when the measurement signal is generated from the measurement signal generation unit 25 and the time when the reception notification is received from the sensor attached to the speaker SP-GL via the reception unit 27, The measured time difference is notified to the position calculator 28.
- the position of the speaker SP-L can be calculated by performing the same processing as described above.
- the measurement signal (measurement sound wave) used in the first to fourth embodiments may be an audible band signal or an ultrasonic signal outside the audible band.
- the supply of the measurement signal to the speaker may be performed through a normal speaker cable, or may be performed using a dedicated signal line.
- an ultrasonic signal is used as the measurement signal, an ultrasonic wave may be generated from an ultrasonic transducer attached to the speaker cabinet.
- n is a natural number of 2 or more
- n sensors may be used, and in the fourth embodiment, n measurement speakers may be used. If n ⁇ 3, the position of each speaker can be detected three-dimensionally.
- a 6.1-channel digital surround system is described as an example, but the present invention can be applied to a system with two or more channels.
- an electromagnetic wave is used as the second measurement signal.
- the second measurement signal may be transmitted to the sensor by wire.
- INDUSTRIAL APPLICABILITY The present invention can be applied to a sound reproducing device that performs multi-channel sound reproduction by driving a plurality of speakers.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Stereophonic System (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/589,783 US7933418B2 (en) | 2004-02-18 | 2005-02-16 | Sound reproducing apparatus and method of identifying positions of speakers |
EP05710536.3A EP1718114A4 (en) | 2004-02-18 | 2005-02-16 | ACOUSTIC REPRODUCTION DEVICE AND SPEAKER POSITION IDENTIFICATION METHOD |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004041237A JP2005236502A (ja) | 2004-02-18 | 2004-02-18 | 音響再生装置 |
JP2004-041237 | 2004-02-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005079114A1 true WO2005079114A1 (ja) | 2005-08-25 |
Family
ID=34857920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/002833 WO2005079114A1 (ja) | 2004-02-18 | 2005-02-16 | 音響再生装置及びスピーカの位置特定方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7933418B2 (ja) |
EP (1) | EP1718114A4 (ja) |
JP (1) | JP2005236502A (ja) |
CN (1) | CN1922924A (ja) |
WO (1) | WO2005079114A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7729204B2 (en) | 2007-06-08 | 2010-06-01 | Microsoft Corporation | Acoustic ranging |
CN101009953B (zh) * | 2005-11-18 | 2011-02-23 | 索尼株式会社 | 音效校正装置 |
CN103618986A (zh) * | 2013-11-19 | 2014-03-05 | 深圳市新一代信息技术研究院有限公司 | 一种3d空间中音源声像体的提取方法及装置 |
Families Citing this family (67)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11294618B2 (en) | 2003-07-28 | 2022-04-05 | Sonos, Inc. | Media player system |
US8290603B1 (en) | 2004-06-05 | 2012-10-16 | Sonos, Inc. | User interfaces for controlling and manipulating groupings in a multi-zone media system |
US11106424B2 (en) | 2003-07-28 | 2021-08-31 | Sonos, Inc. | Synchronizing operations among a plurality of independently clocked digital data processing devices |
US8234395B2 (en) | 2003-07-28 | 2012-07-31 | Sonos, Inc. | System and method for synchronizing operations among a plurality of independently clocked digital data processing devices |
US11106425B2 (en) | 2003-07-28 | 2021-08-31 | Sonos, Inc. | Synchronizing operations among a plurality of independently clocked digital data processing devices |
US10613817B2 (en) | 2003-07-28 | 2020-04-07 | Sonos, Inc. | Method and apparatus for displaying a list of tracks scheduled for playback by a synchrony group |
US11650784B2 (en) | 2003-07-28 | 2023-05-16 | Sonos, Inc. | Adjusting volume levels |
US8086752B2 (en) | 2006-11-22 | 2011-12-27 | Sonos, Inc. | Systems and methods for synchronizing operations among a plurality of independently clocked digital data processing devices that independently source digital data |
US9977561B2 (en) | 2004-04-01 | 2018-05-22 | Sonos, Inc. | Systems, methods, apparatus, and articles of manufacture to provide guest access |
US8024055B1 (en) | 2004-05-15 | 2011-09-20 | Sonos, Inc. | Method and system for controlling amplifiers |
US8868698B2 (en) | 2004-06-05 | 2014-10-21 | Sonos, Inc. | Establishing a secure wireless network with minimum human intervention |
US8326951B1 (en) | 2004-06-05 | 2012-12-04 | Sonos, Inc. | Establishing a secure wireless network with minimum human intervention |
JP2006319535A (ja) * | 2005-05-11 | 2006-11-24 | Yamaha Corp | 音響再生装置 |
JP2007003957A (ja) * | 2005-06-27 | 2007-01-11 | Matsushita Electric Ind Co Ltd | 車両用通信システム |
JP4285457B2 (ja) | 2005-07-20 | 2009-06-24 | ソニー株式会社 | 音場測定装置及び音場測定方法 |
JP4788318B2 (ja) * | 2005-12-02 | 2011-10-05 | ヤマハ株式会社 | 位置検出システム、この位置検出システムに用いるオーディオ装置及び端末装置 |
US8483853B1 (en) | 2006-09-12 | 2013-07-09 | Sonos, Inc. | Controlling and manipulating groupings in a multi-zone media system |
US8788080B1 (en) | 2006-09-12 | 2014-07-22 | Sonos, Inc. | Multi-channel pairing in a media system |
US9202509B2 (en) | 2006-09-12 | 2015-12-01 | Sonos, Inc. | Controlling and grouping in a multi-zone media system |
EP2123113B1 (en) | 2006-12-15 | 2018-02-14 | Sonova AG | Hearing system with enhanced noise cancelling and method for operating a hearing system |
FR2915041A1 (fr) * | 2007-04-13 | 2008-10-17 | Canon Kk | Procede d'attribution d'une pluralite de canaux audio a une pluralite de haut-parleurs, produit programme d'ordinateur, moyen de stockage et noeud gestionnaire correspondants. |
JP2011519528A (ja) * | 2008-04-21 | 2011-07-07 | スナップ ネットワークス インコーポレーテッド | スピーカー用電気システムとその制御装置 |
US8199941B2 (en) * | 2008-06-23 | 2012-06-12 | Summit Semiconductor Llc | Method of identifying speakers in a home theater system |
US9544698B2 (en) | 2009-05-18 | 2017-01-10 | Oticon A/S | Signal enhancement using wireless streaming |
EP2438770A1 (en) | 2009-06-03 | 2012-04-11 | Koninklijke Philips Electronics N.V. | Estimation of loudspeaker positions |
CN102113349A (zh) * | 2009-06-22 | 2011-06-29 | 萨米特半导体有限责任公司 | 在家庭影院系统中识别扬声器的方法 |
EP2502090A4 (en) * | 2009-11-19 | 2013-07-03 | Adamson Systems Engineering Inc | Method and system for determining the relative position of multiple speakers in a room |
US11265652B2 (en) | 2011-01-25 | 2022-03-01 | Sonos, Inc. | Playback device pairing |
US11429343B2 (en) | 2011-01-25 | 2022-08-30 | Sonos, Inc. | Stereo playback configuration and control |
US8938312B2 (en) | 2011-04-18 | 2015-01-20 | Sonos, Inc. | Smart line-in processing |
US9042556B2 (en) | 2011-07-19 | 2015-05-26 | Sonos, Inc | Shaping sound responsive to speaker orientation |
JP5915170B2 (ja) * | 2011-12-28 | 2016-05-11 | ヤマハ株式会社 | 音場制御装置および音場制御方法 |
US9729115B2 (en) | 2012-04-27 | 2017-08-08 | Sonos, Inc. | Intelligently increasing the sound level of player |
US9319816B1 (en) * | 2012-09-26 | 2016-04-19 | Amazon Technologies, Inc. | Characterizing environment using ultrasound pilot tones |
US9008330B2 (en) | 2012-09-28 | 2015-04-14 | Sonos, Inc. | Crossover frequency adjustments for audio speakers |
WO2014082683A1 (en) * | 2012-11-30 | 2014-06-05 | Huawei Technologies Co., Ltd. | Audio rendering system |
BR112015018352A2 (pt) * | 2013-02-05 | 2017-07-18 | Koninklijke Philips Nv | aparelho de áudio e método para operar um sistema de áudio |
KR102081336B1 (ko) * | 2013-06-17 | 2020-02-25 | 삼성전자주식회사 | 오디오 시스템, 오디오 장치 및 오디오 장치의 채널 맵핑 방법 |
KR20150015262A (ko) * | 2013-07-31 | 2015-02-10 | 한국전자통신연구원 | 다채널 무선 네트워크에서의 패킷 처리 방법 및 그 장치 |
CN104427075B (zh) * | 2013-08-26 | 2019-02-26 | 深圳富泰宏精密工业有限公司 | 音量调节系统及方法 |
US9244516B2 (en) | 2013-09-30 | 2016-01-26 | Sonos, Inc. | Media playback system using standby mode in a mesh network |
US9183838B2 (en) | 2013-10-09 | 2015-11-10 | Summit Semiconductor Llc | Digital audio transmitter and receiver |
US9380399B2 (en) | 2013-10-09 | 2016-06-28 | Summit Semiconductor Llc | Handheld interface for speaker location |
US9451377B2 (en) | 2014-01-07 | 2016-09-20 | Howard Massey | Device, method and software for measuring distance to a sound generator by using an audible impulse signal |
US9226087B2 (en) | 2014-02-06 | 2015-12-29 | Sonos, Inc. | Audio output balancing during synchronized playback |
US9226073B2 (en) | 2014-02-06 | 2015-12-29 | Sonos, Inc. | Audio output balancing during synchronized playback |
MX357405B (es) * | 2014-03-24 | 2018-07-09 | Samsung Electronics Co Ltd | Metodo y aparato de reproduccion de señal acustica y medio de grabacion susceptible de ser leido en computadora. |
US8995240B1 (en) * | 2014-07-22 | 2015-03-31 | Sonos, Inc. | Playback using positioning information |
US10536790B2 (en) * | 2015-03-12 | 2020-01-14 | StarTime Software Technology Co., Ltd. | Location based services audio system |
US11079481B2 (en) * | 2015-04-02 | 2021-08-03 | Samsung Electronics Co., Ltd. | Apparatus and method for measuring distance and location |
CN104837106B (zh) * | 2015-05-25 | 2018-01-26 | 上海音乐学院 | 一种用于空间化声音的音频信号处理方法及装置 |
US10248376B2 (en) | 2015-06-11 | 2019-04-02 | Sonos, Inc. | Multiple groupings in a playback system |
US10007481B2 (en) | 2015-08-31 | 2018-06-26 | Sonos, Inc. | Detecting and controlling physical movement of a playback device during audio playback |
CN105163237A (zh) * | 2015-10-14 | 2015-12-16 | Tcl集团股份有限公司 | 一种多声道自动平衡调节的方法及系统 |
US10303422B1 (en) | 2016-01-05 | 2019-05-28 | Sonos, Inc. | Multiple-device setup |
US10712997B2 (en) | 2016-10-17 | 2020-07-14 | Sonos, Inc. | Room association based on name |
JP6607220B2 (ja) | 2017-03-17 | 2019-11-20 | ヤマハ株式会社 | スピーカ位置特定システム、スピーカ位置特定装置、及びスピーカ位置特定方法 |
JP6904031B2 (ja) * | 2017-04-13 | 2021-07-14 | ヤマハ株式会社 | スピーカ位置検出システム、スピーカ位置検出装置、及びスピーカ位置検出方法 |
US10627479B2 (en) * | 2017-05-17 | 2020-04-21 | Zerokey Inc. | Method for determining the position of an object and system employing same |
JP2019087839A (ja) * | 2017-11-06 | 2019-06-06 | ローム株式会社 | オーディオシステムおよびその補正方法 |
CN108429998A (zh) * | 2018-03-29 | 2018-08-21 | 广州视源电子科技股份有限公司 | 音源定位方法和系统、音箱系统定位方法和音箱系统 |
JP7107036B2 (ja) * | 2018-07-05 | 2022-07-27 | ヤマハ株式会社 | スピーカの位置判定方法、スピーカの位置判定システム、音響装置及びプログラム |
WO2020030769A1 (en) * | 2018-08-09 | 2020-02-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | An audio processor and a method considering acoustic obstacles and providing loudspeaker signals |
WO2020030304A1 (en) | 2018-08-09 | 2020-02-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | An audio processor and a method considering acoustic obstacles and providing loudspeaker signals |
JP2020036113A (ja) * | 2018-08-28 | 2020-03-05 | シャープ株式会社 | 音響システム |
CN109040911B (zh) * | 2018-10-12 | 2021-09-17 | 上海摩软通讯技术有限公司 | 智能音箱及其目标放置位置的确定方法 |
EP4329337A1 (en) * | 2022-08-22 | 2024-02-28 | Bang & Olufsen A/S | Method and system for surround sound setup using microphone and speaker localization |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11113099A (ja) * | 1997-09-30 | 1999-04-23 | Nippon Columbia Co Ltd | 音像定位調整装置 |
JP2003092799A (ja) * | 2001-09-18 | 2003-03-28 | Sony Corp | 音響処理装置 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01276900A (ja) | 1988-04-28 | 1989-11-07 | Hitachi Ltd | 音場再生装置 |
JP2000354300A (ja) | 1999-06-11 | 2000-12-19 | Accuphase Laboratory Inc | マルチチャンネルオーディオ再生装置 |
JP2001194812A (ja) * | 2000-01-07 | 2001-07-19 | Kyocera Mita Corp | 電子写真感光体 |
IL134979A (en) * | 2000-03-09 | 2004-02-19 | Be4 Ltd | A system and method for optimizing three-dimensional hearing |
JP2001352600A (ja) * | 2000-06-08 | 2001-12-21 | Marantz Japan Inc | リモートコントロール装置およびレシーバならびにオーディオシステム |
JP3747779B2 (ja) | 2000-12-26 | 2006-02-22 | 株式会社ケンウッド | オーディオ装置 |
US20030119523A1 (en) * | 2001-12-20 | 2003-06-26 | Willem Bulthuis | Peer-based location determination |
JP3896865B2 (ja) * | 2002-02-25 | 2007-03-22 | ヤマハ株式会社 | マルチチャンネルオーディオシステム |
KR100905966B1 (ko) * | 2002-12-31 | 2009-07-06 | 엘지전자 주식회사 | 홈시어터의 오디오 출력 조정 장치 및 그 방법 |
JP4134794B2 (ja) * | 2003-04-07 | 2008-08-20 | ヤマハ株式会社 | 音場制御装置 |
JP4052189B2 (ja) * | 2003-06-19 | 2008-02-27 | ソニー株式会社 | 音響装置および音響設定方法 |
KR100532452B1 (ko) * | 2003-07-22 | 2005-11-30 | 삼성전자주식회사 | 음성신호 재생 시스템 및 음성신호 재생방법 |
JP4765289B2 (ja) * | 2003-12-10 | 2011-09-07 | ソニー株式会社 | 音響システムにおけるスピーカ装置の配置関係検出方法、音響システム、サーバ装置およびスピーカ装置 |
JP2006258442A (ja) * | 2005-03-15 | 2006-09-28 | Yamaha Corp | 位置検出システム、スピーカシステムおよびユーザ端末装置 |
-
2004
- 2004-02-18 JP JP2004041237A patent/JP2005236502A/ja active Pending
-
2005
- 2005-02-16 US US10/589,783 patent/US7933418B2/en not_active Expired - Fee Related
- 2005-02-16 WO PCT/JP2005/002833 patent/WO2005079114A1/ja not_active Application Discontinuation
- 2005-02-16 EP EP05710536.3A patent/EP1718114A4/en not_active Withdrawn
- 2005-02-16 CN CNA2005800053205A patent/CN1922924A/zh active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11113099A (ja) * | 1997-09-30 | 1999-04-23 | Nippon Columbia Co Ltd | 音像定位調整装置 |
JP2003092799A (ja) * | 2001-09-18 | 2003-03-28 | Sony Corp | 音響処理装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1718114A4 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101009953B (zh) * | 2005-11-18 | 2011-02-23 | 索尼株式会社 | 音效校正装置 |
US7978866B2 (en) | 2005-11-18 | 2011-07-12 | Sony Corporation | Acoustics correcting apparatus |
US7729204B2 (en) | 2007-06-08 | 2010-06-01 | Microsoft Corporation | Acoustic ranging |
CN103618986A (zh) * | 2013-11-19 | 2014-03-05 | 深圳市新一代信息技术研究院有限公司 | 一种3d空间中音源声像体的提取方法及装置 |
WO2015074400A1 (zh) * | 2013-11-19 | 2015-05-28 | 深圳市新一代信息技术研究院有限公司 | 一种3d空间中音源声像体的提取方法及装置 |
CN103618986B (zh) * | 2013-11-19 | 2015-09-30 | 深圳市新一代信息技术研究院有限公司 | 一种3d空间中音源声像体的提取方法及装置 |
US9646617B2 (en) | 2013-11-19 | 2017-05-09 | Shenzhen Xinyidai Institute Of Information Technology | Method and device of extracting sound source acoustic image body in 3D space |
Also Published As
Publication number | Publication date |
---|---|
CN1922924A (zh) | 2007-02-28 |
EP1718114A1 (en) | 2006-11-02 |
US20070133813A1 (en) | 2007-06-14 |
JP2005236502A (ja) | 2005-09-02 |
US7933418B2 (en) | 2011-04-26 |
EP1718114A4 (en) | 2013-09-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2005079114A1 (ja) | 音響再生装置及びスピーカの位置特定方法 | |
US7676044B2 (en) | Multi-speaker audio system and automatic control method | |
US7123731B2 (en) | System and method for optimization of three-dimensional audio | |
JP4449998B2 (ja) | アレイスピーカ装置 | |
US8199941B2 (en) | Method of identifying speakers in a home theater system | |
JP4232775B2 (ja) | 音場補正装置 | |
AU2001239516A1 (en) | System and method for optimization of three-dimensional audio | |
EP1443804B1 (en) | A multichannel reproducing apparatus | |
WO2012164444A1 (en) | An audio system and method of operating therefor | |
CN101138276B (zh) | 环绕声系统 | |
JP4450764B2 (ja) | スピーカ装置 | |
KR100728043B1 (ko) | 청취자에게 동상의 음향을 제공하는 방법 및 장치 | |
JP2005057545A (ja) | 音場制御装置及び音響システム | |
KR20090045762A (ko) | 사용자 위치 추적을 이용한 스피커의 방향 및 음량 최적화시스템 | |
KR100765793B1 (ko) | 음향 변환기 어레이를 사용하는 오디오 시스템에서 룸파라미터를 보정하는 장치 및 방법 | |
JP4810378B2 (ja) | 音響出力装置及びその制御方法並びに音響システム | |
CN112789868A (zh) | 配置为产生声音并且同时用作接收器和源的蓝牙扬声器 | |
KR101103361B1 (ko) | 입체 음향 시스템 및 입체 음향을 구현하는 방법 | |
US5778087A (en) | Method for stereo loudspeaker placement | |
JPS58155377A (ja) | 位置検出装置 | |
JP5626586B2 (ja) | 遅延測定装置、遅延測定方法およびコンピュータプログラム | |
JP2006352570A (ja) | スピーカシステム | |
KR0171839B1 (ko) | 멀티 채널 오디오시스템의 음상정위 제어장치 및 방법 | |
JP2009027631A (ja) | バイアンプ補正装置、およびそれを備えたavアンプ | |
KR20010091117A (ko) | 오디오의 볼륨 조절장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200580005320.5 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005710536 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007133813 Country of ref document: US Ref document number: 10589783 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 2005710536 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 10589783 Country of ref document: US |