JP5463143B2 - オーディオ信号のデコーディング方法及びその装置 - Google Patents
オーディオ信号のデコーディング方法及びその装置 Download PDFInfo
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- JP5463143B2 JP5463143B2 JP2009540157A JP2009540157A JP5463143B2 JP 5463143 B2 JP5463143 B2 JP 5463143B2 JP 2009540157 A JP2009540157 A JP 2009540157A JP 2009540157 A JP2009540157 A JP 2009540157A JP 5463143 B2 JP5463143 B2 JP 5463143B2
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- 230000005236 sound signal Effects 0.000 title claims description 52
- 238000000034 method Methods 0.000 title claims description 44
- 238000004091 panning Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 19
- 230000001755 vocal effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000013139 quantization Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/16—Vocoder architecture
- G10L19/18—Vocoders using multiple modes
- G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding
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- Signal Processing (AREA)
- Multimedia (AREA)
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- Audiology, Speech & Language Pathology (AREA)
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- Acoustics & Sound (AREA)
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Description
本発明の一部実施例では、オブジェクトゲインは、処理されたダウンミックス信号の生成以前にそれぞれのオブジェクトに適用される。
Claims (14)
- オーディオ信号をデコーディングする方法であって、
それぞれ1又は複数のオブジェクトを含む少なくとも二つのダウンミックス信号を用いて生成された結合ダウンミックス信号と、少なくとも二組のオブジェクト情報の結合により生成される結合オブジェクト情報と、前記結合オブジェクト情報によってダウンミックス信号処理情報を生成するために、ユーザ入力又はビットストリームから受信されるミックス情報とを受信する段階であって、前記少なくとも二組のオブジェクト情報は、前記結合オブジェクト情報を生成するために用いられる基準情報を含む、段階と、
オブジェクトゲイン及びオブジェクトパニングのうち少なくとも一つを制御するために、前記結合オブジェクト情報及び前記ミックス情報を用いて前記ダウンミックス信号処理情報を生成する段階と、
前記ダウンミックス信号処理情報を前記結合ダウンミックス信号に適用して前記結合ダウンミックス信号を修正する段階と、
を有する方法。 - 前記結合オブジェクト情報は、制御情報に基づいて生成される、請求項1に記載の方法。
- 前記制御情報は、オブジェクト制御情報を含む、請求項2に記載の方法。
- 前記オブジェクト制御情報は、前記結合オブジェクト情報に含まれるオブジェクト集合を決定する、請求項3に記載の方法。
- 前記制御情報は、ゲイン制御情報を含む、請求項2に記載の方法。
- 前記ゲイン制御情報は、前記ダウンミックス信号のダウンミックスゲインを決定する、請求項5に記載の方法。
- 前記結合オブジェクト情報は、結合基準情報、結合オブジェクトレベル情報、結合オブジェクトゲイン情報及び結合オブジェクト相関情報のうち少なくとも一つを含む、請求項2に記載の方法。
- 前記結合基準情報は、前記オブジェクト情報の前記基準情報に基づいて推定される、請求項7に記載の方法。
- 前記結合オブジェクトレベル情報は、前記結合基準情報に基づいて計算される、請求項7に記載の方法。
- 前記結合ダウンミックス信号は、ダウンミックス信号結合部から受信される、請求項1に記載の方法。
- 前記結合オブジェクト情報は、マルチポイント制御ユニット(MCU)結合部から受信される、請求項1に記載の方法。
- 前記ダウンミックス信号は、放送信号として受信される、請求項1に記載の方法。
- 前記ダウンミックス信号は、デジタル媒体から受信される、請求項1に記載の方法。
- オーディオ信号をデコーディングする装置であって、
少なくとも二組のオブジェクト情報の結合により生成される結合オブジェクト情報と、前記結合オブジェクト情報によってダウンミックス信号処理情報を生成するために、ユーザ入力又はビットストリームから受信されるミックス情報とを受信し、オブジェクトゲイン及びオブジェクトパニングのうち少なくとも一つを制御するために、前記結合オブジェクト情報及び前記ミックス情報を用いて前記ダウンミックス信号処理情報を生成する情報生成部であって、前記少なくとも二組のオブジェクト情報は、前記結合オブジェクト情報を生成するために用いられる基準情報を含む情報生成部と、
それぞれ1又は複数のオブジェクトを含む少なくとも二つのダウンミックス信号を用いて生成された結合ダウンミックス信号及び前記ダウンミックス信号処理情報を受信し、前記ダウンミックス信号処理情報を用いて前記結合ダウンミックス信号を修正するダウンミックス信号処理部と、
を備える装置。
Applications Claiming Priority (13)
Application Number | Priority Date | Filing Date | Title |
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US86907706P | 2006-12-07 | 2006-12-07 | |
US86908006P | 2006-12-07 | 2006-12-07 | |
US60/869,080 | 2006-12-07 | ||
US60/869,077 | 2006-12-07 | ||
US88356707P | 2007-01-05 | 2007-01-05 | |
US60/883,567 | 2007-01-05 | ||
US88971507P | 2007-02-13 | 2007-02-13 | |
US60/889,715 | 2007-02-13 | ||
US95539507P | 2007-08-13 | 2007-08-13 | |
US60/955,395 | 2007-08-13 | ||
US97052407P | 2007-09-06 | 2007-09-06 | |
US60/970,524 | 2007-09-06 | ||
PCT/KR2007/006297 WO2008069584A2 (en) | 2006-12-07 | 2007-12-06 | A method and an apparatus for decoding an audio signal |
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US (1) | US8265941B2 (ja) |
EP (1) | EP2102855A4 (ja) |
JP (3) | JP5463143B2 (ja) |
KR (1) | KR101062353B1 (ja) |
CN (1) | CN101632117A (ja) |
WO (1) | WO2008069584A2 (ja) |
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US8265941B2 (en) | 2012-09-11 |
JP5735671B2 (ja) | 2015-06-17 |
KR101062353B1 (ko) | 2011-09-05 |
KR20090087954A (ko) | 2009-08-18 |
JP2014090509A (ja) | 2014-05-15 |
US20110040567A1 (en) | 2011-02-17 |
EP2102855A1 (en) | 2009-09-23 |
JP2010522345A (ja) | 2010-07-01 |
WO2008069584A2 (en) | 2008-06-12 |
EP2102855A4 (en) | 2010-07-28 |
JP6010176B2 (ja) | 2016-10-19 |
CN101632117A (zh) | 2010-01-20 |
JP2015146641A (ja) | 2015-08-13 |
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