JP4806031B2 - メディア信号の処理方法及び装置 - Google Patents
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
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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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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S1/00—Two-channel systems
- H04S1/007—Two-channel systems in which the audio signals are in digital form
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
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- 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
- H04S2400/15—Aspects of sound capture and related signal processing for recording or reproduction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
- H04S2420/01—Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD]
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- Acoustics & Sound (AREA)
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- Human Computer Interaction (AREA)
- Audiology, Speech & Language Pathology (AREA)
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- General Physics & Mathematics (AREA)
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- Mathematical Optimization (AREA)
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- Stereophonic System (AREA)
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- Signal Processing For Digital Recording And Reproducing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
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Description
その第一は、ハイブリッドフィルターバンクにダウンミックス信号を通過させ、ハイブリッドドメインでレンダリングを行う方法である。この時、空間情報に対するドメインの変換は不要である。
Claims (8)
- ダウンミックス信号及び空間情報を受信する段階と、
前記ダウンミックス信号にデコリレータを適用し、デコリレートされたダウンミックス信号を生成する段階と、
前記空間情報及びサラウンド効果のフィルター情報を用いてレンダリング情報を生成する段階と、
前記ダウンミックス信号及び前記デコリレートされたダウンミックス信号に前記レンダリング情報を適用し、サラウンド効果を有するサラウンド信号を生成する段階と、を含み、
前記ダウンミックス信号はモノ信号である、ことを特徴とする信号処理方法。 - 前記レンダリング情報を適用する段階は、時間ドメイン、周波数ドメイン、QMFドメイン及びハイブリッドドメインの一つで行われることを特徴とする、請求項1に記載の信号処理方法。
- 前記ダウンミックス信号を、前記生成されたサラウンド信号と同一のドメインの信号へと変換する段階をさらに含むことを特徴とする、請求項1に記載の信号処理方法。
- 前記レンダリング情報のドメインは、前記生成されたサラウンド信号の前記ドメインと同一であることを特徴とする、請求項3に記載の信号処理方法。
- ダウンミックス信号及び空間情報を受信する逆多重化部と、
前記ダウンミックス信号にデコリレータを適用し、デコリレートされたダウンミックス信号を生成するデコリレーティング部と、
前記空間情報及びサラウンド効果のフィルター情報を用いてレンダリング情報を生成する統合部と、
前記ダウンミックス信号及び前記デコリレートされたダウンミックス信号に前記レンダリング情報を適用し、サラウンド効果を有するサラウンド信号を生成するレンダリング部と、を含み、
前記ダウンミックス信号はモノ信号である、ことを特徴とする信号処理装置。 - 前記レンダリング部は、時間ドメイン、周波数ドメイン、QMFドメイン及びハイブリッドドメインの一つで前記サラウンド信号を生成することを特徴とする、請求項5に記載の信号処理装置。
- 前記ダウンミックス信号を、前記生成されたサラウンド信号と同一のドメインの信号へと変換するドメイン変換部をさらに含むことを特徴とする、請求項5に記載の信号処理装置。
- 前記レンダリング情報のドメインは、前記生成されたサラウンド信号の前記ドメインと同一であることを特徴とする、請求項7に記載の信号処理装置。
Applications Claiming Priority (15)
Application Number | Priority Date | Filing Date | Title |
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US75998006P | 2006-01-19 | 2006-01-19 | |
US60/759,980 | 2006-01-19 | ||
US77672406P | 2006-02-27 | 2006-02-27 | |
US60/776,724 | 2006-02-27 | ||
US77944206P | 2006-03-07 | 2006-03-07 | |
US77944106P | 2006-03-07 | 2006-03-07 | |
US77941706P | 2006-03-07 | 2006-03-07 | |
US60/779,442 | 2006-03-07 | ||
US60/779,417 | 2006-03-07 | ||
US60/779,441 | 2006-03-07 | ||
US78717206P | 2006-03-30 | 2006-03-30 | |
US60/787,172 | 2006-03-30 | ||
US78751606P | 2006-03-31 | 2006-03-31 | |
US60/787,516 | 2006-03-31 | ||
PCT/KR2007/000350 WO2007083960A1 (en) | 2006-01-19 | 2007-01-19 | Method and apparatus for processing a media signal |
Publications (3)
Publication Number | Publication Date |
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JP2009524341A JP2009524341A (ja) | 2009-06-25 |
JP2009524341A5 JP2009524341A5 (ja) | 2010-04-22 |
JP4806031B2 true JP4806031B2 (ja) | 2011-11-02 |
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JP2008551193A Active JP4814343B2 (ja) | 2006-01-19 | 2007-01-19 | メディア信号の処理方法及び装置 |
JP2008551196A Active JP4787331B2 (ja) | 2006-01-19 | 2007-01-19 | メディア信号の処理方法及び装置 |
JP2008551199A Active JP4695197B2 (ja) | 2006-01-19 | 2007-01-19 | メディア信号の処理方法及び装置 |
JP2008551194A Active JP4814344B2 (ja) | 2006-01-19 | 2007-01-19 | メディア信号の処理方法及び装置 |
JP2008551200A Active JP4806031B2 (ja) | 2006-01-19 | 2007-01-19 | メディア信号の処理方法及び装置 |
JP2008551195A Active JP4801174B2 (ja) | 2006-01-19 | 2007-01-19 | メディア信号の処理方法及び装置 |
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JP2008551196A Active JP4787331B2 (ja) | 2006-01-19 | 2007-01-19 | メディア信号の処理方法及び装置 |
JP2008551199A Active JP4695197B2 (ja) | 2006-01-19 | 2007-01-19 | メディア信号の処理方法及び装置 |
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Country | Link |
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US (6) | US8521313B2 (ja) |
EP (6) | EP1979898B1 (ja) |
JP (6) | JP4814343B2 (ja) |
KR (8) | KR100953640B1 (ja) |
AU (1) | AU2007206195B2 (ja) |
BR (1) | BRPI0707136A2 (ja) |
CA (1) | CA2636494C (ja) |
ES (3) | ES2446245T3 (ja) |
HK (1) | HK1127433A1 (ja) |
TW (7) | TWI329461B (ja) |
WO (6) | WO2007083959A1 (ja) |
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