KR100983286B1 - 부호화/복호화 장치 및 방법 - Google Patents
부호화/복호화 장치 및 방법 Download PDFInfo
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- KR100983286B1 KR100983286B1 KR1020087016479A KR20087016479A KR100983286B1 KR 100983286 B1 KR100983286 B1 KR 100983286B1 KR 1020087016479 A KR1020087016479 A KR 1020087016479A KR 20087016479 A KR20087016479 A KR 20087016479A KR 100983286 B1 KR100983286 B1 KR 100983286B1
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- downmix signal
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
- G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
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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
- 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
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
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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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- 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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- 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
- H04S2420/03—Application of parametric coding in stereophonic audio systems
Abstract
Description
Claims (18)
- 오디오 신호를 통해 제1 3D 다운믹스 신호를 수신하는 단계;상기 제1 3D 다운믹스 신호를 복호화 하는 단계;상기 제1 3D 다운믹스 신호에 대해 제1 3D 렌더링(rendering)을 수행하여 3D 효과가 제거된 다운믹스 신호를 생성하는 단계; 및상기 다운믹스 신호에 대해 제2 3D 렌더링을 수행하여 제2 3D 다운믹스 신호를 생성하는 단계를 포함하고,상기 제1 3D 다운믹스 신호 및 상기 제2 3D 다운믹스 신호는 가상 멀티 채널 효과를 갖는 스테레오 채널로 구성되는 것을 특징으로 하는 오디오 신호 복호화 방법.
- 제1항에 있어서, 상기 제2 3D 다운믹스 신호를 생성하는 단계는복호화 장치에 저장된 필터 정보를 이용하여 수행되는 것을 특징으로 하는 오디오 신호 복호화 방법.
- 제2항에 있어서, 상기 필터 정보는HRTF(Head Related Transfer Function) 계수에 관한 정보를 포함하는 것을 특징으로 하는 오디오 신호 복호화 방법.
- 제1항에 있어서, 상기 제2 3D 다운믹스 신호를 생성하는 단계는상기 제1 3D 다운믹스 신호의 생성에 사용된 필터와 상이한 특성을 가지는 필터를 이용하여 수행되는 것을 특징으로 하는 오디오 신호 복호화 방법.
- 제1항에 있어서,복수의 필터들 중 상기 제2 3D 다운믹스 신호 생성에 사용되는 필터를 결정하는 단계를 더 포함하는 것을 특징으로 하는 오디오 신호 복호화 방법.
- 제5항에 있어서,상기 제2 3D 다운믹스 신호 생성에 사용될 필터는, 사용자의 선택, 장치의 성능, 재생 환경 및 요구되는 음질 중 적어도 하나에 의해 결정되는 것을 특징으로 하는 오디오 신호 복호화 방법.
- 삭제
- 삭제
- 제1항에 있어서, 상기 다운믹스 신호를 생성하는 단계는제1 3D 다운믹스 신호의 생성에 사용된 필터의 역변환 필터를 이용하여 수행되는 것을 특징으로 하는 오디오 신호 복호화 방법.
- 제 1항 내지 제 6항, 및 제 9 항 중 어느 한 항에 기재된 방법을 컴퓨터에서 실행시키기 위한 프로그램을 기록한 컴퓨터로 읽을 수 있는 기록매체.
- 삭제
- 오디오 신호를 통해 제1 3D 다운믹스 신호를 수신하는 비트언팩킹부;상기 제1 3D 다운믹스 신호를 복호화하는 다운믹스 디코더;상기 제1 3D 다운믹스 신호에 대해 제1 3D 렌더링을 수행하여 3D 효과가 제거된 다운믹스 신호를 생성하는 제1 3D렌더링부; 및상기 다운믹스 신호에 대해 제2 3D 렌더링을 수행하여 제2 3D 다운믹스 신호를 생성하는 제2 3D렌더링부를 포함하고,상기 제1 3D 다운믹스 신호 및 상기 제2 3D 다운믹스 신호는 가상 멀티 채널 효과를 갖는 스테레오 채널로 구성되는 것을 특징으로 하는 오디오 신호 복호화 장치.
- 제12항에 있어서,상기 제2 3D 다운믹스 신호를 생성에 사용될 필터에 관한 정보인 필터 정보를 저장하는 저장부를 더 포함하고,상기 제2 3D 렌더링부는,상기 필터에 관한 정보를 이용하여 상기 제2 3D 다운믹스 신호를 생성하는 것을 특징으로 하는 오디오 신호 복호화 장치.
- 제13항에 있어서, 상기 필터 정보는HRTF(Head Related Transfer Function) 계수에 관한 정보를 포함하는 것을 특징으로 하는 오디오 신호 복호화 장치.
- 제12항에 있어서, 상기 제2 3D 렌더링부는,상기 제1 3D 다운믹스 신호의 생성에 사용된 필터와 상이한 특성을 가지는 필터를 이용하여 상기 제2 3D 다운믹스 신호를 생성하는 것을 특징으로 하는 오디오 신호 복호화 장치.
- 제12항에 있어서,상기 제2 3D 렌더링부는,복수의 필터들 중 상기 제2 3D 다운믹스 신호 생성에 사용되는 필터를 결정하는 것을 특징으로 하는 오디오 신호 복호화 장치.
- 제16항에 있어서,상기 제2 3D 다운믹스 신호 생성에 사용되는 필터는, 사용자의 선택, 장치의 성능, 재생 환경 및 요구되는 음질 중 적어도 하나에 의해 결정되는 것을 특징으로 하는 오디오 신호 복호화 장치.
- 제12항에 있어서, 상기 제1 3D 렌더링부는,제1 3D 다운믹스 신호의 생성에 사용된 필터의 역변환 필터를 이용하여 상기 다운믹스 신호를 생성하는 것을 특징으로 하는 오디오 신호 복호화 장치.
Applications Claiming Priority (16)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US76574706P | 2006-02-07 | 2006-02-07 | |
US60/765,747 | 2006-02-07 | ||
US77147106P | 2006-02-09 | 2006-02-09 | |
US60/771,471 | 2006-02-09 | ||
US77333706P | 2006-02-15 | 2006-02-15 | |
US60/773,337 | 2006-02-15 | ||
US77577506P | 2006-02-23 | 2006-02-23 | |
US60/775,775 | 2006-02-23 | ||
US78175006P | 2006-03-14 | 2006-03-14 | |
US60/781,750 | 2006-03-14 | ||
US78251906P | 2006-03-16 | 2006-03-16 | |
US60/782,519 | 2006-03-16 | ||
US79232906P | 2006-04-17 | 2006-04-17 | |
US60/792,329 | 2006-04-17 | ||
US79365306P | 2006-04-21 | 2006-04-21 | |
US60/793,653 | 2006-04-21 |
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KR20080093416A KR20080093416A (ko) | 2008-10-21 |
KR100983286B1 true KR100983286B1 (ko) | 2010-09-24 |
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KR1020087016481A KR101203839B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012929A KR100921453B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020087016482A KR20080094775A (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012937A KR100878816B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012931A KR100902898B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020087016478A KR20080093024A (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012930A KR100913091B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020087016483A KR20080093419A (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012941A KR100897809B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020087028251A KR20080110920A (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012932A KR100902899B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012928A KR100878814B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020087016480A KR100991795B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012940A KR100908055B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012938A KR100863479B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
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KR1020070012929A KR100921453B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020087016482A KR20080094775A (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012937A KR100878816B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012931A KR100902898B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020087016478A KR20080093024A (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012930A KR100913091B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020087016483A KR20080093419A (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012941A KR100897809B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020087028251A KR20080110920A (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012932A KR100902899B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012928A KR100878814B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020087016480A KR100991795B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012940A KR100908055B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012938A KR100863479B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
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KR1020070012939A KR100863480B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
KR1020070012933A KR100878815B1 (ko) | 2006-02-07 | 2007-02-07 | 부호화/복호화 장치 및 방법 |
Country Status (11)
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US (8) | US8160258B2 (ko) |
EP (7) | EP1982326A4 (ko) |
JP (7) | JP5173840B2 (ko) |
KR (19) | KR101203839B1 (ko) |
CN (1) | CN104681030B (ko) |
AU (1) | AU2007212845B2 (ko) |
BR (1) | BRPI0707498A2 (ko) |
CA (1) | CA2637722C (ko) |
HK (1) | HK1128810A1 (ko) |
TW (4) | TWI483244B (ko) |
WO (7) | WO2007091850A1 (ko) |
Families Citing this family (72)
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WO2006126844A2 (en) | 2005-05-26 | 2006-11-30 | Lg Electronics Inc. | Method and apparatus for decoding an audio signal |
JP4988717B2 (ja) | 2005-05-26 | 2012-08-01 | エルジー エレクトロニクス インコーポレイティド | オーディオ信号のデコーディング方法及び装置 |
JP4801174B2 (ja) | 2006-01-19 | 2011-10-26 | エルジー エレクトロニクス インコーポレイティド | メディア信号の処理方法及び装置 |
EP1982326A4 (en) | 2006-02-07 | 2010-05-19 | Lg Electronics Inc | DEVICE AND METHOD FOR CODING / DECODING A SIGNAL |
JP5023662B2 (ja) | 2006-11-06 | 2012-09-12 | ソニー株式会社 | 信号処理システム、信号送信装置、信号受信装置およびプログラム |
JP5355387B2 (ja) * | 2007-03-30 | 2013-11-27 | パナソニック株式会社 | 符号化装置および符号化方法 |
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