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1. WO2011126340 - METHOD AND APPARATUS FOR PROCESSING AN AUDIO SIGNAL

Publication Number WO/2011/126340
Publication Date 13.10.2011
International Application No. PCT/KR2011/002487
International Filing Date 08.04.2011
IPC
G10L 19/12 2006.1
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signal 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
04using predictive techniques
08Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
12the excitation function being a code excitation, e.g. in code excited linear prediction vocoders
CPC
G10L 19/008
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech 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
008Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
G10L 19/038
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech 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
02using spectral analysis, e.g. transform vocoders or subband vocoders
032Quantisation or dequantisation of spectral components
038Vector quantisation, e.g. TwinVQ audio
G10L 19/04
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech 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
04using predictive techniques
G10L 19/06
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech 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
04using predictive techniques
06Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
G10L 19/07
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech 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
04using predictive techniques
06Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
07Line spectrum pair [LSP] vocoders
G10L 2019/0005
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech 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
0001Codebooks
0004Design or structure of the codebook
0005Multi-stage vector quantisation
Applicants
  • 엘지전자 주식회사 LG ELECTRONICS INC. [KR]/[KR] (AllExceptUS)
  • 정규혁 JEONG, Gyu Hyeok [KR]/[KR] (UsOnly)
  • 전혜정 JEON, Hye Jeong [KR]/[KR] (UsOnly)
  • 이병석 LEE, Byung Suk [KR]/[KR] (UsOnly)
  • 이창헌 LEE, Chang Heon [KR]/[KR] (UsOnly)
Inventors
  • 정규혁 JEONG, Gyu Hyeok
  • 전혜정 JEON, Hye Jeong
  • 이병석 LEE, Byung Suk
  • 이창헌 LEE, Chang Heon
Agents
  • 김용인 KIM, Yong In
Priority Data
10-2010-008648803.09.2010KR
10-2010-008648903.09.2010KR
61/321,88108.04.2010US
61/321,88208.04.2010US
Publication Language Korean (ko)
Filing Language Korean (KO)
Designated States
Title
(EN) METHOD AND APPARATUS FOR PROCESSING AN AUDIO SIGNAL
(FR) PROCÉDÉ ET APPAREIL POUR LE TRAITEMENT D'UN SIGNAL AUDIO
(KO) 오디오 신호 처리 방법 및 장치
Abstract
(EN) The present invention relates to a method for processing an audio signal, comprising the following steps: performing a linear predictive analysis on the current frame of an audio signal so as to generate a first target vector, which is a target vector of a first stage, on the basis of a plurality of linear prediction transform coefficients; performing vector quantization on the first target vector so as to acquire a predetermined number of first temporary candidate code vectors of the first stage; calculating first temporary candidate errors, which are errors between the first temporary candidate code vectors and the first target vector; and determining a first number, which is the number of the first candidate code vectors, on the basis of the first temporary candidate errors, and acquiring first final candidate code vectors in the same amount as the first number.
(FR) La présente invention porte sur un procédé pour le traitement d'un signal audio, ledit procédé comprenant les étapes suivantes : la réalisation d'une analyse prédictive linéaire sur la trame courante d'un signal audio de façon à générer un premier vecteur cible, qui est un vecteur cible d'une première étape, sur la base d'une pluralité de coefficients de transformation de prédiction linéaire ; la réalisation d'une quantification de vecteur sur le premier vecteur cible de façon à acquérir un nombre prédéterminé de premiers vecteurs de code candidats temporaires de la première étape ; le calcul de premières erreurs de candidat temporaire, qui sont des erreurs entre les premiers vecteurs de code candidats temporaires et le premier vecteur cible ; et la détermination d'un premier nombre, qui est le nombre des premiers vecteurs de code candidats, sur la base des premières erreurs de candidat temporaire, et l'acquisition de premiers vecteurs de code candidats finaux dans la même quantité que le premier nombre.
(KO) 본 발명은, 오디오 신호의 현재 프레임에 대해서 선형-예측 분석을 수행함으로써, 복수의 선형-예측 변환 계수들을 근거로 하여 제 1단계의 타깃 벡터인 제 1 타깃 벡터를 생성하는 단계; 상기 제 1 타깃 벡터를 벡터 양자화함으로써, 임시로 결정된 개수의 제 1 단계의 제 1 임시 후보 코드벡터들을 획득하는 단계; 상기 제 1 임시 후보 코드벡터들 및 상기 제 1 타깃 벡터간의 에러인 제 1 임시 후보 에러들을 산출하는 단계; 및, 상기 제 1 임시 후보 에러들을 근거로 하여 제 1 후보 코드벡터들의 개수인 제 1 개수를 결정하고, 상기 제 1 개수만큼의 제 1 최종 후보 코드벡터들을 획득하는 단계를 포함하는 오디오 신호 처리 방법을 개시한다.
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