JP5270358B2 - 信号処理で時間遅延を補償する方法 - Google Patents
信号処理で時間遅延を補償する方法 Download PDFInfo
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- 230000005236 sound signal Effects 0.000 claims description 113
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- 238000006243 chemical reaction Methods 0.000 claims description 49
- 230000003111 delayed effect Effects 0.000 claims description 26
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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
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
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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
- H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation
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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
- G10L19/167—Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
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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
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- 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
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Description
Claims (6)
- オーディオ信号を処理する方法であって、
ダウンミックスコーディング方式及び多チャネルオーディオコーディング方式を用いてエンコーディングされたダウンミックス信号並びに空間情報を含むエンコーディングされたオーディオ信号を受信する段階と、
前記ダウンミックスコーディング方式を用いて前記ダウンミックス信号を処理する段階と、
前記多チャネルオーディオコーディング方式を用いて前記の処理されたダウンミックス信号をデコーディングする段階と、を有し、
前記デコーディングする段階は、
時間ドメインの前記ダウンミックス信号をリアル直交ミラーフィルタ(QMF)ドメインのダウンミックス信号に第1の変換をする段階と、
前記リアル直交ミラーフィルタドメインの前記ダウンミックス信号を、コンプレックス直交ミラーフィルタドメインのダウンミックス信号に第2の変換をする段階と、
前記コンプレックス直交ミラーフィルタドメインの前記ダウンミックス信号と前記空間情報とを結合する段階と、を有し、
前記空間情報は、前記オーディオ信号をエンコーディングするとき、前記第1の変換及び前記第2の変換の経過時間を含む時間量だけ遅延される、方法。 - 前記処理する段階は、直交ミラーフィルタドメインの前記ダウンミックス信号を前記時間ドメインの前記ダウンミックス信号に第3の変換をする段階を有する、請求項1に記載の方法。
- 前記空間情報の総遅延時間は961時間サンプルである、請求項1に記載の方法。
- オーディオ信号を処理する装置であって、
ダウンミックスコーディング方式及び多チャネルオーディオコーディング方式を用いてエンコーディングされたダウンミックス信号並びに空間情報を含むエンコーディングされたオーディオ信号を受信するオーディオ信号受信部と、
前記ダウンミックスコーディング方式を用いて前記ダウンミックス信号を処理するダウンミックスデコーダと、
前記多チャネルオーディオコーディング方式を用いて前記の処理されたダウンミックス信号をデコーディングする多チャネルデコーダと、を備え、
前記多チャネルデコーダは、
時間ドメインの前記ダウンミックス信号をリアル直交ミラーフィルタ(QMF)ドメインのダウンミックス信号に第1の変換をする第1ダウンミックス信号変換部と、
前記リアル直交ミラーフィルタドメインの前記ダウンミックス信号を、コンプレックス直交ミラーフィルタドメインのダウンミックス信号に第2の変換をする第2ダウンミックス信号変換部と、
前記コンプレックス直交ミラーフィルタドメインの前記ダウンミックス信号と前記空間情報とを結合する空間情報結合部と、を備え、
前記空間情報は、前記オーディオ信号をエンコーディングするとき、前記第1の変換及び前記第2の変換の経過時間を含む時間量だけ遅延される、装置。 - 前記ダウンミックスデコーダは、直交ミラーフィルタドメインの前記ダウンミックス信号を前記時間ドメインの前記ダウンミックス信号に第3の変換をする第3ダウンミックス信号変換部を備える、請求項4に記載の装置。
- 前記空間情報の総遅延時間は961時間サンプルである、請求項4に記載の装置。
Applications Claiming Priority (21)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US72922505P | 2005-10-24 | 2005-10-24 | |
US60/729,225 | 2005-10-24 | ||
US75700506P | 2006-01-09 | 2006-01-09 | |
US60/757,005 | 2006-01-09 | ||
US78674006P | 2006-03-29 | 2006-03-29 | |
US60/786,740 | 2006-03-29 | ||
US79232906P | 2006-04-17 | 2006-04-17 | |
US60/792,329 | 2006-04-17 | ||
KR10-2006-0078221 | 2006-08-18 | ||
KR1020060078221A KR20070037984A (ko) | 2005-10-04 | 2006-08-18 | 다채널 오디오 신호의 디코딩 방법 및 그 장치 |
KR1020060078222A KR20070037985A (ko) | 2005-10-04 | 2006-08-18 | 다채널 오디오 신호의 디코딩 방법 및 그 장치 |
KR10-2006-0078222 | 2006-08-18 | ||
KR10-2006-0078219 | 2006-08-18 | ||
KR10-2006-0078223 | 2006-08-18 | ||
KR10-2006-0078225 | 2006-08-18 | ||
KR1020060078218A KR20070037983A (ko) | 2005-10-04 | 2006-08-18 | 다채널 오디오 신호의 디코딩 방법 및 부호화된 오디오신호 생성방법 |
KR10-2006-0078218 | 2006-08-18 | ||
KR1020060078225A KR20070037987A (ko) | 2005-10-04 | 2006-08-18 | 다채널 오디오 신호의 디코딩 방법 및 장치 |
KR1020060078219A KR20070074442A (ko) | 2006-01-09 | 2006-08-18 | 다채널 오디오 복원 장치 및 방법과 이 장치에서 수행되는프로그램을 기록한 컴퓨터로 읽을 수 있는 기록 매체 |
KR1020060078223A KR20070037986A (ko) | 2005-10-04 | 2006-08-18 | 다채널 오디오 신호의 처리방법 및 그 장치 |
PCT/KR2006/003980 WO2007049866A1 (en) | 2005-10-24 | 2006-10-02 | Removing time delays in signal paths |
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JP2009512902A JP2009512902A (ja) | 2009-03-26 |
JP5270358B2 true JP5270358B2 (ja) | 2013-08-21 |
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JP2008537582A Pending JP2009513084A (ja) | 2005-10-24 | 2006-10-02 | 信号処理で時間遅延を補償する方法 |
JP2008537584A Active JP5270358B2 (ja) | 2005-10-24 | 2006-10-02 | 信号処理で時間遅延を補償する方法 |
JP2008537581A Active JP5249038B2 (ja) | 2005-10-24 | 2006-10-02 | 信号処理で時間遅延を補償する方法 |
JP2008537580A Active JP5270357B2 (ja) | 2005-10-24 | 2006-10-02 | 信号処理で時間遅延を補償する方法 |
JP2008537583A Active JP5249039B2 (ja) | 2005-10-24 | 2006-10-02 | 信号処理で時間遅延を補償する方法 |
JP2008537579A Active JP5399706B2 (ja) | 2005-10-24 | 2006-10-02 | 信号処理で時間遅延を補償する方法 |
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JP2008537580A Active JP5270357B2 (ja) | 2005-10-24 | 2006-10-02 | 信号処理で時間遅延を補償する方法 |
JP2008537583A Active JP5249039B2 (ja) | 2005-10-24 | 2006-10-02 | 信号処理で時間遅延を補償する方法 |
JP2008537579A Active JP5399706B2 (ja) | 2005-10-24 | 2006-10-02 | 信号処理で時間遅延を補償する方法 |
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US (8) | US7653533B2 (ja) |
EP (6) | EP1952670A4 (ja) |
JP (6) | JP2009513084A (ja) |
KR (7) | KR101186611B1 (ja) |
CN (6) | CN101297594B (ja) |
AU (1) | AU2006306942B2 (ja) |
BR (1) | BRPI0617779A2 (ja) |
CA (1) | CA2626132C (ja) |
HK (1) | HK1126071A1 (ja) |
TW (6) | TWI317247B (ja) |
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