WO2006057170A1 - 音像定位装置 - Google Patents
音像定位装置 Download PDFInfo
- Publication number
- WO2006057170A1 WO2006057170A1 PCT/JP2005/020714 JP2005020714W WO2006057170A1 WO 2006057170 A1 WO2006057170 A1 WO 2006057170A1 JP 2005020714 W JP2005020714 W JP 2005020714W WO 2006057170 A1 WO2006057170 A1 WO 2006057170A1
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- WO
- WIPO (PCT)
- Prior art keywords
- filter coefficient
- sound image
- listener
- image localization
- listener information
- Prior art date
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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
- H04S7/302—Electronic adaptation of stereophonic sound system to listener position or orientation
-
- 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
- H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
-
- 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
- H04R5/033—Headphones for stereophonic communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
- H04S2400/01—Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved
Definitions
- the present invention relates to a sound image localization device, for example, a sound image localization device that localizes a sound image of a sound reproduced from a speaker or a headphone of a mobile terminal device in three dimensions.
- the conventional sound image localization device is for left front sound source (LF) and right front sound source.
- RF left rear sound source
- RB right rear sound source
- AD Analog-to-digital
- AD converter 75-78 and FIR (Finite Impulse Response) filter to reproduce impulse response representing transfer characteristics from sound source power to ear position calculated by measurement or calculation in advance
- the signal processing unit 79 is composed of: a tap number selection unit 80 that selects the number of taps of the FIR filter, and a DA that converts the audio signals of the left and right channels into digital signals and analog signals, respectively.
- Patent Document 1 Japanese Patent Laid-Open No. 2002-112399 (Page 6, Figure 1)
- the time and frequency characteristics until the sound reaches the listener's ear while the sound is reproduced by the speaker force vary depending on the physical characteristics such as the size of the listener's head.
- the conventional sound image localization apparatus has a problem that it cannot be located at a target sound image position where the sound image is to be localized, depending on the physical characteristics of the listener.
- An object of the present invention is to provide a sound image localization apparatus that can localize a sound image at a target sound image position independently.
- the sound image localization apparatus of the present invention includes filter coefficient storage means for storing filter coefficient candidates, and filter coefficient selection means for selecting a filter coefficient from filter coefficient candidates stored in the filter coefficient storage means. And sound image localization means for localizing the sound image of the sound reproduced based on the sound signal by performing a filtering process on the sound signal based on the filter coefficient selected by the filter coefficient selecting means.
- the filter coefficient selecting means is configured to select a filter coefficient based on localization information indicating a position where the sound image is localized and listener information indicating a physical characteristic of the listener.
- the sound image localization apparatus of the present invention selects the filter coefficient of the filtering process based on the listener information representing the physical characteristics of the listener in addition to the localization information.
- a sound image can be localized at a target sound image position without depending on physical characteristics.
- the sound image localization apparatus of the present invention may be configured to include a listener information storage means for storing the listener information.
- the listener information stored in the listener information storage means may be input.
- the registered listener information input means may be further provided.
- the sound image localization apparatus of the present invention selects the filter coefficient of the filtering process based on the listener information stored in the listener information storage means.
- the sound image can be localized at the target sound image position regardless of the above.
- the sound image localization apparatus of the present invention includes filter coefficient storage means for storing candidates for filter coefficients suitable for the physical characteristics of the listener, and filter coefficient candidates stored in the filter coefficient storage means.
- a filter coefficient selecting means for selecting a filter coefficient from the above, and a sound image of the sound reproduced based on the sound signal by performing a filtering process on the sound signal based on the filter coefficient selected by the filter coefficient selecting means Sound filter localization means, and the filter coefficient selection means is configured to select a filter coefficient based on localization information indicating a position where the sound image is localized.
- the sound image localization apparatus of the present invention is a filter suitable for the physical characteristics of the listener. Coefficient candidate power Since the filter coefficient for filtering is selected, the sound image can be localized at the target sound image position regardless of the physical characteristics of the listener.
- the sound image localization apparatus of the present invention reduces the storage capacity of the filter coefficient storage means because the filter coefficient candidates stored in the filter coefficient storage means are limited to those suitable for the physical characteristics of the listener. In addition, it is possible to reduce the processing time required for selecting the filter coefficient.
- the sound image localization apparatus of the present invention may be configured to include filter coefficient registration means for registering filter coefficient candidates suitable for the physical characteristics of the listener in the filter coefficient storage means. .
- the sound image localization apparatus of the present invention can register filter coefficient candidates suitable for the physical characteristics of the listener in the filter coefficient storage means.
- the filter coefficient registration means transmits the listener information representing the physical characteristics of the listener to the filter coefficient storage apparatus connected via the network, thereby allowing the filter coefficient storage apparatus and the filter coefficient registration means to transmit the listener coefficient information.
- the filter coefficient candidate to be received may be registered in the filter coefficient storage means.
- the sound image localization apparatus of the present invention acquires filter coefficient candidates suitable for the physical characteristics of the listener from the filter coefficient storage device connected via the network, and acquires the acquired filter coefficient candidates. Can be registered in the filter coefficient storage means.
- the sound image localization apparatus of the present invention includes listener information storage means for storing the listener information, and the filter coefficient registration means stores the listener information stored in the listener information storage means. It may be configured to transmit to the filter coefficient storage device.
- the sound image localization apparatus of the present invention acquires and acquires filter coefficient candidates suitable for the physical characteristics of the listener stored in advance from the filter coefficient storage apparatus connected via the network.
- the filter coefficient candidates can be registered in the filter coefficient storage means.
- the sound image localization apparatus of the present invention includes listener information input means for inputting a part of the listener information, and listener information storage means for storing another part of the listener information.
- the filter coefficient registration means includes a listener input to the listener information input means. Listener information consisting of a part of information and another part of the listener information stored in the listener information storage means may be transmitted to the filter coefficient storage device.
- the sound image localization apparatus of the present invention can store, via the network, candidate filter coefficients suitable for the listener's physical characteristics stored in advance and the listener's physical characteristics input by the listener. It can be obtained from a connected filter coefficient storage device, and the obtained filter coefficient candidates can be registered in the filter coefficient storage means.
- the sound image localization apparatus of the present invention may include a registered listener information input unit for inputting listener information stored in the listener information storage unit.
- the sound image localization apparatus of the present invention can store the listener's physical characteristics in the listener information storage means.
- the sound image localization apparatus of the present invention includes listener information input means for inputting the listener information, and the filter coefficient registering means stores the listener information input to the listener information input means. It may be configured to transmit to the filter coefficient storage device.
- the sound image localization apparatus of the present invention obtains filter coefficient candidates suitable for the physical characteristics of the listener input by the listener from the filter coefficient storage device connected via the network.
- the acquired filter coefficient candidates can be registered in the filter coefficient storage means.
- the physical characteristics of the listener include at least one of the gender and height of the listener.
- the sound image localization apparatus of the present invention includes a recording medium holding unit that detachably holds a recording medium, and a filter stored in the filter coefficient storage unit in the recording medium held by the recording medium holding unit.
- a filter coefficient writing unit for writing coefficient candidates may be provided.
- the filter coefficient candidates stored in the filter coefficient storage means can be written to the recording medium, so the filter coefficient candidates stored in the filter coefficient storage means are used for other sound image localization devices. can do.
- the sound image localization apparatus of the present invention reads a filter coefficient candidate to be stored in the filter coefficient storage means from the recording medium held by the recording medium holding means. You can use a filter coefficient reading means.
- filter coefficient candidates can be read from the recording medium into the filter coefficient storage means, so that filter coefficients of other sound image localization devices recorded on the recording medium can be used for IJ. .
- the present invention can localize a sound image at a target sound image position without depending on the physical characteristics of the listener, and also allows the listener to easily set an optimum filter coefficient. It is possible to provide a sound image localization apparatus having
- FIG. 1 is a block diagram of a sound image localization apparatus according to a first embodiment of the present invention.
- FIG. 2 is a block diagram of sound image localization means constituting the sound image localization apparatus in the first embodiment of the present invention.
- FIG. 3 is a diagram for explaining filter coefficient candidates stored in filter coefficient storage means constituting the sound image localization apparatus according to the first embodiment of the present invention.
- FIG. 4 is an image of a localization information selection screen of filter coefficient selection means constituting the sound image localization apparatus in the first embodiment of the present invention.
- FIG. 5 is a flowchart for explaining the operation of the sound image localization apparatus in the first embodiment of the present invention.
- FIG. 6 is a block diagram of a sound image localization apparatus in a second embodiment of the present invention.
- FIG. 7 is a diagram for explaining filter coefficient candidates stored in filter coefficient storage means constituting the sound image localization apparatus according to the second embodiment of the present invention.
- FIG. 8 is a flowchart for explaining the operation of the sound image localization apparatus in the second embodiment of the present invention.
- FIG. 9 is a block diagram of another first mode of the sound image localization apparatus in the second embodiment of the present invention.
- FIG. 10 shows another second state of the sound image localization apparatus according to the second embodiment of the present invention.
- FIG. 11 is a block diagram of a sound image localization apparatus in a third embodiment of the present invention.
- FIG. 12 is a block diagram of a conventional sound image localization apparatus.
- FIG. 1 A sound image localization apparatus according to a first embodiment of the present invention is shown in FIG.
- a sound image localization device 1 includes registered listener information input means 2 for inputting listener information representing the physical characteristics of the listener, and listener information storage means 3 for storing the listener information.
- Filter coefficient storage means 4 for storing filter coefficient candidates
- filter coefficient selection means 5 for selecting filter coefficients from among the filter coefficient candidates stored in the filter coefficient storage means 4, and a sound image localization apparatus 1
- the sound image localization means 6 for localizing the sound image reproduced based on the audio signal by applying filtering to the digital audio signal input to the left channel, and the left channel (hereinafter referred to as filter processing) by the sound image localization means 6 , Simply “Lch” t, and right channel (hereinafter simply “Rch” t))
- DA converters DA converters 7L, 7R, and Lch and Rch audio signals respectively Power amplifiers 8L and 8R that respectively amplify power, and a headphone 9 having a left speaker 9L and a right speaker 9R that output Lch and Rch audio signals, respectively
- the size of the listener's head is a factor that affects the time from when the sound is reproduced until the sound reaches the listener's ear.
- Human heads tend to have different average sizes depending on gender, with men tending to be larger and women tending to be smaller.
- the average value of the human head varies depending on the height, and there is a tendency that a person with a large height is larger and a person with a smaller height is smaller.
- the physical characteristics of the listener represented by the listener information include the gender and height of the listener.
- the physical characteristics of the listener represented by the listener information are As long as it contains at least one of the listener's gender and height.
- the registered listener information input means 2 is constituted by an input device such as a keyboard device, and the listener information storage means 3 and the filter coefficient storage means 4 are constituted by a non-volatile storage medium such as a hard disk device or a flash memory. Is done.
- some information terminals such as mobile phones have a function of registering personal information in a storage medium in the information terminal. There are many.
- listener information may be registered as personal information, and the listener information storage means 3 may be configured by a storage medium in the information terminal. .
- the personal information registered in the old information terminal is moved to the new information terminal, whereby the listener information storage means of the new information terminal is stored. It is also possible to write information.
- the sound image localization means 6 is configured according to the number of channels of the audio signal applied to the sound image localization device 1.
- Fig. 2 shows a block diagram of sound image localization means 6 when the audio signal is composed of four channels: a left front sound source DLF, a right front sound source DRF, a left rear sound source DLB, and a right rear sound source DRB. It is.
- the sound image localization means 6 includes FIR filters 11 and 12 that filter the audio signal of channel DRF, and FIR filters 13 and 14 that filter the audio signal of channel DLF.
- FIR filters 15 and 16 that filter channel DRB audio signals
- FIR filters 17 and 18 that filter channel DLB audio signals, and audio signals that have been filtered by FIR filter 11
- an adder 19 that adds the audio signal filtered by the FIR filter 13 and the audio signal filtered by the FIR filter 12 and the audio signal filtered by the FIR filter 14 are added.
- an adder 20 that adds the audio signal filtered by the FIR filter 15 and the audio signal filtered by the FIR filter 17.
- the arithmetic unit 21 adds the audio signal filtered by the FIR filter 16 and the audio signal filtered by the FIR filter 18, and adds the audio signal added by the adder 19.
- the sound image localization means 6 outputs the Rch audio signal added by the adder 23 and the Lch audio signal added by the adder 24.
- the filter coefficient storage means 4 includes localization information 31 indicating the position where the sound image is localized, filter coefficient candidates (hereinafter simply referred to as “patterns”) 32, and a listener. Information 33 is stored correspondingly.
- the filter coefficient selection means 5 is arranged at positions A, B, C One pattern is selected from the patterns 32 stored in the filter coefficient storage means 4 based on the localization information representing X and the listener information.
- the filter coefficient selection means 5 selects the pattern PA, If the listener information stored in the listener information storage means 3 indicates that the listener 30 is short and female, the pattern PC is selected.
- the filter coefficient selection means 5 outputs the localization information candidate 55 to the display device 56 such as a liquid crystal display device, and the listener via the input device such as a pointing device. Let me select the localization information.
- a filter is created.
- One pattern is selected by the filter coefficient selection means 5 from the plurality of patterns stored in the coefficient storage means 4 (Sl).
- the digital audio signal input to the sound image localization apparatus 1 is subjected to filter processing by the sound image localization means 6 based on the filter coefficient included in the pattern selected by the filter coefficient selection means 5. (S2).
- the Lch and Rch audio signals filtered by the sound image localization means 6 are DA-converted by DA converters 7L and 7R (S3), respectively, and power amplified by power amplifiers 8L and 8R ( S4), and output from left speaker 9L and right speaker 9R (S5).
- the sound image localization apparatus 1 of the first embodiment of the present invention based on the listener information representing the physical characteristics of the listener in addition to the localization information! Since the filter coefficient for the filter processing is selected, the sound image can be localized at the target sound image position regardless of the physical characteristics of the listener.
- the sound image localization device 1 is applied to an information terminal such as a mobile phone, Therefore, by acquiring the listener information, the personal information registered in the information terminal can prevent the sound image from being localized based on preset filter coefficients that are not optimal for the listener. .
- the force sound image localization apparatus 1 described as the sound image localization apparatus 1 including the headphones 9 may include two speaker apparatuses instead of the headphones 9.
- the filter coefficients stored in the filter coefficient storage means 4 are set according to the arrangement of the speaker devices.
- the sound image localization apparatus 1 may further include filter coefficient setting means for setting the filter coefficient stored in the filter coefficient storage means 4 based on information representing the arrangement of each speaker device. Oh ,.
- FIG. 6 shows a sound image localization apparatus according to the second embodiment of the present invention.
- the same components as those of the sound image localization apparatus 1 according to the first embodiment of the present invention are denoted by the same reference numerals. The explanation is omitted.
- the sound image localization device 40 includes registered listener information input means 2, listener information storage means 3, filter coefficient storage means 41 that stores filter coefficient candidates, and listener information storage means.
- Filter coefficient registration means 42 for acquiring filter coefficient candidates suitable for the physical characteristics of the listener based on the listener information stored in 3 and registering the acquired filter coefficient candidates in the filter coefficient storage means 4;
- Filter coefficient selection means 43 for selecting a filter coefficient from filter coefficient candidates stored in the filter coefficient storage means 41, sound image localization means 6, DA converters 7L and 7R, and power amplifiers 8L and 8R.
- headphones 9 are registered listener information input means 2, listener information storage means 3, filter coefficient storage means 41 that stores filter coefficient candidates, and listener information storage means.
- the filter coefficient registration unit 42 transmits the listener information stored in the listener information storage unit 3 to the filter coefficient storage unit 46 connected via the network 45.
- the filter coefficient storage unit 46 includes a listener's physical characteristics and a filter suitable for the physical characteristics.
- the filter coefficient candidates are stored correspondingly.
- the filter coefficient storage device 46 Upon receiving the listener information, the filter coefficient storage device 46 transmits the filter coefficient candidates corresponding to the received listener information to the listener information transmission source via the network 45.
- the filter coefficient registration unit 42 When the filter coefficient registration unit 42 receives a filter coefficient candidate, the filter coefficient registration unit 42 registers the received filter coefficient candidate in the filter coefficient storage unit 41. Note that when the filter coefficient registration unit 42 registers the filter coefficient candidates in the filter coefficient storage unit 41, the filter coefficient registration unit 42 uses the case where the filter coefficient candidates are already stored in the filter coefficient storage unit 41. After the previously stored filter coefficient candidates are discarded, new filter coefficient candidates are registered! /.
- the filter coefficient storage means 41 stores localization information 50 and a pattern 51 corresponding to the position where the sound image is localized.
- the filter coefficient selection means 43 selects one pattern from a plurality of patterns stored in the filter coefficient storage means 41 based on the localization information.
- one of the plurality of patterns acquired by the filter coefficient registration means 42 based on the listener information and stored in the filter coefficient storage means 41 is selected by the filter coefficient selection means 43 based on the localization information. Selected (S 11).
- the digital audio signal input to the sound image localization device 40 is subjected to filter processing by the sound image localization means 6 based on the filter coefficient included in the pattern selected by the filter coefficient selection means 43 (S 12).
- the Lch and Rch audio signals filtered by the sound image localization means 6 are D
- DA conversion is performed by the A converters 7L and 7R (SI 3), power is amplified by the power amplifiers 8L and 8R (S14), and the power is output by the left speaker 9L and the right speaker 9R (S15).
- the sound image localization apparatus 40 of the second embodiment of the present invention in order to select the filter coefficient candidate power suitable for the physical characteristics of the listener, the listener is selected.
- the sound image can be localized at the target sound image position regardless of the physical characteristics of the sound.
- the filter coefficient candidates stored in the filter coefficient storage means 41 are limited to those suitable for the physical characteristics of the listener.
- the storage capacity of the filter coefficient storage means 41 can be reduced, and the processing time required for selecting the filter coefficient can be reduced.
- the sound image localization apparatus 40 is not limited to the registered listener information input means 2 and the listener information storage means 3 as shown in FIG.
- Listener information input means 44 for inputting information may be provided, and the filter coefficient registration means 42 may transmit the listener information input to the listener information input means 44 to the filter coefficient storage device 46.
- the sound image localization apparatus 40 further includes listener information input means 44, and the filter coefficient registration means 42 includes listener information input means. It is also possible to transmit to the filter coefficient storage device 46 the listener information comprising a part of the listener information input in the stage 44 and the other part of the listener information stored in the listener information storage means 3. Good.
- the sound image localization apparatus 40 configured as described above can be configured, for example, to store the gender in the listener information storage unit 3 and to input the height via the listener information input unit 44.
- the listener information input means 44 described above may use the listener's answer to the question transmitted from the filter coefficient storage device 46 via the network 45 as part of the listener information or the listener information. .
- FIG. 11 shows a sound image localization apparatus according to the third embodiment of the present invention. Note that in each configuration of the sound image localization apparatus 60 according to the third embodiment of the present invention, the same components as those of the sound image localization apparatus 40 according to the second embodiment of the present invention are denoted by the same reference numerals. The explanation is omitted.
- a sound image localization apparatus 60 includes a recording medium holding means 61 that detachably holds a recording medium, and a recording medium Stored in the filter coefficient storage means 41 in the recording medium held by the holding means 61.
- the recording medium force held by 61 includes filter coefficient reading means 63 for reading filter coefficient candidates to be stored in the filter coefficient storage means 41.
- the recording medium held by the recording medium holding means 61 for example, SD (SD
- memory cards with built-in flash memory such as Secure Digital) memory cards, magnetic disks, and optical disks.
- the sound image localization operation of the sound image localization device 60 is the same as the sound image localization operation of the sound image localization device 40 according to the second embodiment of the present invention described with reference to FIG. To do.
- the filter coefficient candidates stored in the filter coefficient storage means 41 can be written to the recording medium.
- the filter coefficient candidates stored in the storage means 41 can be used for other sound image localization apparatuses.
- the filter coefficient candidates can be read from the recording medium into the filter coefficient storage means 41, and therefore recorded on the recording medium. Filter coefficients of other sound image localization devices can be used.
- the sound image localization apparatus can localize a sound image at a target sound image position regardless of the physical characteristics of the listener, and provides an optimum filter coefficient for the listener. It has the effect that it can be easily set, and is useful as a sound image localization device that three-dimensionally locates the sound image of the sound reproduced by the speaker or headphone power of the portable terminal device.
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05805907A EP1816897A1 (en) | 2004-11-24 | 2005-11-11 | Sound image locator |
US11/719,383 US20090141903A1 (en) | 2004-11-24 | 2005-11-11 | Sound image localization apparatus |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-339200 | 2004-11-24 | ||
JP2004339200 | 2004-11-24 | ||
JP2005325847A JP2006180467A (ja) | 2004-11-24 | 2005-11-10 | 音像定位装置 |
JP2005-325847 | 2005-11-10 |
Publications (1)
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WO2006057170A1 true WO2006057170A1 (ja) | 2006-06-01 |
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Family Applications (1)
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PCT/JP2005/020714 WO2006057170A1 (ja) | 2004-11-24 | 2005-11-11 | 音像定位装置 |
Country Status (4)
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US (1) | US20090141903A1 (ja) |
EP (1) | EP1816897A1 (ja) |
JP (1) | JP2006180467A (ja) |
WO (1) | WO2006057170A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2011188287A (ja) * | 2010-03-09 | 2011-09-22 | Sony Corp | 映像音響装置 |
JP6578813B2 (ja) * | 2015-08-20 | 2019-09-25 | 株式会社Jvcケンウッド | 頭外定位処理装置、及びフィルタ選択方法 |
JP2018101452A (ja) * | 2016-12-20 | 2018-06-28 | カシオ計算機株式会社 | 出力制御装置、コンテンツ記憶装置、出力制御方法、コンテンツ記憶方法、プログラム及びデータ構造 |
EP3720148A4 (en) * | 2017-12-01 | 2021-07-14 | Socionext Inc. | SIGNAL PROCESSING DEVICE, AND SIGNAL PROCESSING METHOD |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH099398A (ja) * | 1995-06-20 | 1997-01-10 | Matsushita Electric Ind Co Ltd | 音像定位装置 |
JP2003111200A (ja) * | 2001-09-28 | 2003-04-11 | Sony Corp | 音響処理装置 |
JP2004166113A (ja) * | 2002-11-15 | 2004-06-10 | Mitsubishi Electric Corp | デジタル記録再生装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2842064B1 (fr) * | 2002-07-02 | 2004-12-03 | Thales Sa | Systeme de spatialisation de sources sonores a performances ameliorees |
JPWO2005025270A1 (ja) * | 2003-09-08 | 2006-11-16 | 松下電器産業株式会社 | 音像制御装置の設計ツールおよび音像制御装置 |
-
2005
- 2005-11-10 JP JP2005325847A patent/JP2006180467A/ja not_active Withdrawn
- 2005-11-11 WO PCT/JP2005/020714 patent/WO2006057170A1/ja active Application Filing
- 2005-11-11 US US11/719,383 patent/US20090141903A1/en not_active Abandoned
- 2005-11-11 EP EP05805907A patent/EP1816897A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH099398A (ja) * | 1995-06-20 | 1997-01-10 | Matsushita Electric Ind Co Ltd | 音像定位装置 |
JP2003111200A (ja) * | 2001-09-28 | 2003-04-11 | Sony Corp | 音響処理装置 |
JP2004166113A (ja) * | 2002-11-15 | 2004-06-10 | Mitsubishi Electric Corp | デジタル記録再生装置 |
Also Published As
Publication number | Publication date |
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US20090141903A1 (en) | 2009-06-04 |
EP1816897A1 (en) | 2007-08-08 |
JP2006180467A (ja) | 2006-07-06 |
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