JP2009508433A5 - - Google Patents
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- JP2009508433A5 JP2009508433A5 JP2008531016A JP2008531016A JP2009508433A5 JP 2009508433 A5 JP2009508433 A5 JP 2009508433A5 JP 2008531016 A JP2008531016 A JP 2008531016A JP 2008531016 A JP2008531016 A JP 2008531016A JP 2009508433 A5 JP2009508433 A5 JP 2009508433A5
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- audio signal
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- 230000005236 sound signal Effects 0.000 claims 32
- 238000000034 method Methods 0.000 claims 12
- 238000013507 mapping Methods 0.000 claims 4
- 239000011159 matrix material Substances 0.000 claims 4
Claims (18)
ツリー構造情報及び空間パラメータを含む空間情報を受信し、
前記空間情報に拡張空間情報を追加して変形空間情報を生成し、
前記ツリー構造情報及び前記変形空間情報を用いてオーディオ信号をアップミキシングする、オーディオ信号のデコーディング方法であって、
前記アップミキシングにおいて、
前記ツリー構造情報に基づいて前記オーディオ信号を1次アップミキシングオーディオ信号に変換し、
前記1次アップミキシングオーディオ信号を2次アップミキシングオーディオ信号に変換する、
ことを特徴とする、オーディオ信号のデコーディング方法。 Receiving the audio signal,
Receiving spatial information including tree structure information and spatial parameters,
Wherein by adding extended spatial information to spatial information to generate a modified spatial information,
An audio signal decoding method for upmixing an audio signal using the tree structure information and the deformation space information ,
In the up-mixing,
The audio signal is converted to a primary upmixing audio signal based on the tree structure information,
Converting the primary upmixing audio signal to the secondary upmixing audio signal,
A method for decoding an audio signal.
前記空間情報は、前記マルチチャンネルオーディオ信号が定められたツリー構造にしたがってダウンミックスされる過程で決定されることを特徴とする、請求項1に記載のオーディオ信号のデコーディング方法。 The audio signal is a downmix audio signal obtained by downmixing a multichannel audio signal,
The spatial information, characterized in that it is determined in the process of the multi-channel audio signal is therefore downmixed into a tree structure defined, the decoding method of an audio signal according to claim 1.
前記マトリックスを構成する因子は、前記空間パラメータ、及び前記拡張空間情報の拡張空間パラメータによって定義されることを特徴とする、請求項1に記載のオーディオ信号のデコーディング方法。 The deformation space information is a matrix calculated based on the space information and the extended space information,
The audio signal decoding method according to claim 1, wherein the factors constituting the matrix are defined by the spatial parameters and the extended spatial parameters of the extended spatial information.
前記拡張チャンネル構成情報は、分割識別子及び未分割識別子のうちの少なくとも一つを含むことを特徴とする、請求項1に記載のオーディオ信号のデコーディング方法。 The extension space information includes extension channel configuration information and extension space parameters,
The extended channel configuration information, characterized in that it comprises at least one of a segment identifier and undivided identifier, decoding method for an audio signal as claimed in claim 1.
前記拡張空間パラメータは、前記分割識別子の総個数だけ抽出されたことを特徴とする、請求項4に記載のオーディオ信号のデコーディング方法。 The extended spatial information is received;
The audio signal decoding method according to claim 4, wherein the extended spatial parameters are extracted by a total number of the division identifiers.
さらに前記分割識別子とマッチングする拡張空間パラメータを用いて、前記分割識別子とマッチングするチャンネルを2つ以上のチャンネルに分割し、
前記分割は、前記分割識別子の総個数だけ繰り返されることを特徴とする、請求項4に記載のオーディオ信号のデコーディング方法。 In the up-mixing,
The segment identifier and using the extended spatial parameters that match, dividing the segment identifier and the channel you matched to two or more channels further,
The method of claim 4, wherein the division is repeated for the total number of the division identifiers.
前記選択は、前記未分割識別子の総個数だけ繰り返されることを特徴とする、請求項4に記載のオーディオ信号のデコーディング方法。 In the up-mixing further wherein selecting the channel you matching and unsplit identifier as an output channel,
The method of claim 4, wherein the selection is repeated by the total number of the undivided identifiers.
前記アップミキシングの後、さらに前記拡張チャンネルマッピング情報を用いて出力チャンネルオーディオ信号をリマッピングすることを特徴とする、請求項1に記載のオーディオ信号のデコーディング方法。 The extended spatial information includes extended channel mapping information,
After the upmixing, further characterized by remapping the output channel audio signal using the extended channel mapping information, the decoding method of an audio signal according to claim 1.
ツリー構造情報及び前記変形空間情報を用いてオーディオ信号をアップミキシングする出力チャンネル生成部と、
を含み、
前記空間情報は前記ツリー構造情報及び空間パラメータを含み、前記空間情報及び前記オーディオ信号は受信したものであり、
前記出力チャンネル生成部は、前記ツリー構造情報に基づいて前記オーディオ信号を1次アップミキシングオーディオ信号に変換し、前記1次アップミキシングオーディオ信号を2次アップミキシングオーディオ信号に変換する、
ことを特徴とする、オーディオ信号のデコーディング装置。 A deformation space information generation unit for generating deformation space information by adding extended space information to the space information;
An output channel generator for upmixing an audio signal using tree structure information and the deformation space information;
Including
The spatial information includes the tree structure information and spatial parameters, the spatial information and the audio signal are all SANYO received,
The output channel generation unit converts the audio signal into a primary upmixing audio signal based on the tree structure information, and converts the primary upmixing audio signal into a secondary upmixing audio signal.
An audio signal decoding apparatus, comprising:
前記空間情報は、前記マルチチャンネルオーディオ信号が定められたツリー構造にしたがってダウンミックスされる過程で決定されることを特徴とする、請求項11に記載のオーディオ信号のデコーディング装置。The apparatus of claim 11, wherein the spatial information is determined in a process in which the multi-channel audio signal is downmixed according to a predetermined tree structure.
前記マトリックスを構成する因子は、前記空間パラメータ、及び前記拡張空間情報の拡張空間パラメータによって定義されることを特徴とする、請求項10に記載のオーディオ信号のデコーディング装置。The audio signal decoding apparatus according to claim 10, wherein the factor constituting the matrix is defined by the spatial parameter and an extended spatial parameter of the extended spatial information.
前記拡張チャンネル構成情報は、分割識別子及び未分割識別子のうちの少なくとも一つを含むことを特徴とする、請求項10に記載のオーディオ信号のデコーディング装置。The apparatus of claim 10, wherein the extended channel configuration information includes at least one of a divided identifier and an undivided identifier.
前記拡張空間パラメータは、前記分割識別子の総個数だけ抽出されたことを特徴とする、請求項13に記載のオーディオ信号のデコーディング装置。 The apparatus of claim 13, wherein the extended space parameters are extracted by a total number of the division identifiers.
前記分割は、前記分割識別子の総個数だけ繰り返されることを特徴とする、請求項13に記載のオーディオ信号のデコーディング装置。The apparatus of claim 13, wherein the division is repeated by a total number of the division identifiers.
前記選択は、前記未分割識別子の総個数だけ繰り返されることを特徴とする、請求項13に記載のオーディオ信号のデコーディング装置。The apparatus of claim 13, wherein the selection is repeated for the total number of the undivided identifiers.
前記出力チャンネル生成部は、前記拡張チャンネルマッピング情報を用いて出力チャンネルオーディオ信号をリマッピングすることを特徴とする、請求項10に記載のオーディオ信号のデコーディング装置。The apparatus of claim 10, wherein the output channel generation unit remaps an output channel audio signal using the extended channel mapping information.
Applications Claiming Priority (17)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71652405P | 2005-09-14 | 2005-09-14 | |
| US60/716,524 | 2005-09-14 | ||
| US75998006P | 2006-01-19 | 2006-01-19 | |
| US60/759,980 | 2006-01-19 | ||
| US76036006P | 2006-01-20 | 2006-01-20 | |
| US60/760,360 | 2006-01-20 | ||
| US77366906P | 2006-02-16 | 2006-02-16 | |
| US60/773,669 | 2006-02-16 | ||
| US77672406P | 2006-02-27 | 2006-02-27 | |
| US60/776,724 | 2006-02-27 | ||
| US78751606P | 2006-03-31 | 2006-03-31 | |
| US60/787,516 | 2006-03-31 | ||
| US81602206P | 2006-06-22 | 2006-06-22 | |
| US60/816,022 | 2006-06-22 | ||
| KR10-2006-0078300 | 2006-08-18 | ||
| KR20060078300 | 2006-08-18 | ||
| PCT/KR2006/003661 WO2007032647A1 (en) | 2005-09-14 | 2006-09-14 | Method and apparatus for decoding an audio signal |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2009508433A JP2009508433A (en) | 2009-02-26 |
| JP2009508433A5 true JP2009508433A5 (en) | 2009-04-09 |
| JP4740335B2 JP4740335B2 (en) | 2011-08-03 |
Family
ID=44072944
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008531015A Expired - Fee Related JP4728398B2 (en) | 2005-09-14 | 2006-09-14 | Audio signal decoding method and apparatus |
| JP2008531016A Expired - Fee Related JP4740335B2 (en) | 2005-09-14 | 2006-09-14 | Audio signal decoding method and apparatus |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008531015A Expired - Fee Related JP4728398B2 (en) | 2005-09-14 | 2006-09-14 | Audio signal decoding method and apparatus |
Country Status (3)
| Country | Link |
|---|---|
| JP (2) | JP4728398B2 (en) |
| BR (1) | BRPI0616057A2 (en) |
| TW (2) | TWI485698B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2851132B2 (en) | 1990-06-20 | 1999-01-27 | 株式会社東芝 | Endoscope light guide |
| WO2007032646A1 (en) * | 2005-09-14 | 2007-03-22 | Lg Electronics Inc. | Method and apparatus for decoding an audio signal |
| JP4875142B2 (en) * | 2006-03-28 | 2012-02-15 | テレフオンアクチーボラゲット エル エム エリクソン(パブル) | Method and apparatus for a decoder for multi-channel surround sound |
| EP2513899B1 (en) * | 2009-12-16 | 2018-02-14 | Dolby International AB | Sbr bitstream parameter downmix |
| KR20120004909A (en) * | 2010-07-07 | 2012-01-13 | 삼성전자주식회사 | Stereo playback method and apparatus |
| KR102033071B1 (en) * | 2010-08-17 | 2019-10-16 | 한국전자통신연구원 | System and method for compatible multi channel audio |
| CH703771A2 (en) * | 2010-09-10 | 2012-03-15 | Stormingswiss Gmbh | Device and method for the temporal evaluation and optimization of stereophonic or pseudostereophonic signals. |
| TWI517142B (en) | 2012-07-02 | 2016-01-11 | Sony Corp | Audio decoding apparatus and method, audio coding apparatus and method, and program |
| KR20150032649A (en) * | 2012-07-02 | 2015-03-27 | 소니 주식회사 | Decoding device and method, encoding device and method, and program |
| CN103765508B (en) * | 2012-07-02 | 2017-11-24 | 索尼公司 | Decoding apparatus, coding/decoding method, code device and coding method |
| BR112014004129A2 (en) | 2012-07-02 | 2017-06-13 | Sony Corp | decoding and coding devices and methods, and, program |
| EP2830051A3 (en) | 2013-07-22 | 2015-03-04 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio encoder, audio decoder, methods and computer program using jointly encoded residual signals |
| US9955276B2 (en) * | 2014-10-31 | 2018-04-24 | Dolby International Ab | Parametric encoding and decoding of multichannel audio signals |
| US10601322B1 (en) * | 2019-04-04 | 2020-03-24 | Ambiq Micro, Inc. | Strong arm comparator |
| GB2592388A (en) * | 2020-02-26 | 2021-09-01 | Nokia Technologies Oy | Audio rendering with spatial metadata interpolation |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5632005A (en) * | 1991-01-08 | 1997-05-20 | Ray Milton Dolby | Encoder/decoder for multidimensional sound fields |
| JP2924539B2 (en) * | 1993-01-29 | 1999-07-26 | 日本ビクター株式会社 | Sound image localization control method |
| DE69428939T2 (en) * | 1993-06-22 | 2002-04-04 | Deutsche Thomson-Brandt Gmbh | Method for maintaining a multi-channel decoding matrix |
| US6711266B1 (en) * | 1997-02-07 | 2004-03-23 | Bose Corporation | Surround sound channel encoding and decoding |
| JP3572165B2 (en) * | 1997-04-04 | 2004-09-29 | 株式会社デノン | Video / audio signal reproducing apparatus and video / audio signal reproducing method |
| US7212872B1 (en) * | 2000-05-10 | 2007-05-01 | Dts, Inc. | Discrete multichannel audio with a backward compatible mix |
| JP4304401B2 (en) * | 2000-06-07 | 2009-07-29 | ソニー株式会社 | Multi-channel audio playback device |
| US7391869B2 (en) * | 2002-05-03 | 2008-06-24 | Harman International Industries, Incorporated | Base management systems |
| ATE377339T1 (en) * | 2002-07-12 | 2007-11-15 | Koninkl Philips Electronics Nv | AUDIO ENCODING |
| US7447317B2 (en) * | 2003-10-02 | 2008-11-04 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V | Compatible multi-channel coding/decoding by weighting the downmix channel |
| US7394903B2 (en) * | 2004-01-20 | 2008-07-01 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Apparatus and method for constructing a multi-channel output signal or for generating a downmix signal |
| JPWO2005081229A1 (en) * | 2004-02-25 | 2007-10-25 | 松下電器産業株式会社 | Audio encoder and audio decoder |
-
2006
- 2006-09-14 JP JP2008531015A patent/JP4728398B2/en not_active Expired - Fee Related
- 2006-09-14 BR BRPI0616057-3A patent/BRPI0616057A2/en not_active IP Right Cessation
- 2006-09-14 TW TW100109444A patent/TWI485698B/en not_active IP Right Cessation
- 2006-09-14 JP JP2008531016A patent/JP4740335B2/en not_active Expired - Fee Related
- 2006-09-14 TW TW095134072A patent/TWI462086B/en not_active IP Right Cessation
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