BR112013027093A2 - método para quantizar, método para dequantizar, método para codificar, método para decodificar, meio de gravação legível por computador não transitório, e método para determinar um tipo de quantizador - Google Patents

método para quantizar, método para dequantizar, método para codificar, método para decodificar, meio de gravação legível por computador não transitório, e método para determinar um tipo de quantizador Download PDF

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BR112013027093A2
BR112013027093A2 BR112013027093-4A BR112013027093A BR112013027093A2 BR 112013027093 A2 BR112013027093 A2 BR 112013027093A2 BR 112013027093 A BR112013027093 A BR 112013027093A BR 112013027093 A2 BR112013027093 A2 BR 112013027093A2
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quantization module
decoding
selecting
lattice
quantizer
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BR112013027093B1 (pt
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Ho-Sang Sung
Eun-mi Oh
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Samsung Electronics Co, Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • 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
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/032—Quantisation or dequantisation of spectral components
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/032—Quantisation or dequantisation of spectral components
    • G10L19/038—Vector quantisation, e.g. TwinVQ audio
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • 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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    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/087—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters using mixed excitation models, e.g. MELP, MBE, split band LPC or HVXC
    • 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
    • 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
    • G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
    • 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
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • G10L19/07—Line spectrum pair [LSP] vocoders
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0004—Design or structure of the codebook
    • G10L2019/0005—Multi-stage vector quantisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/164—Feedback from the receiver or from the transmission channel

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  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

MÉTODO PARA QUANTIZAR, MÉTODO PARA DECODIFICAR, MÉTODO PARA CODIFICAR, E MEIO DE GRAVAÇÃO LEGÍVEL POR COMPUTADOR NÃO TRANSITÓRIO Um método para quantizar é fornecido que inclui quantizar um sinal de entrada selecionando um de um primeiro esquema de quantização não usando predição inter quadro e um segundo esquema de quantização usando predição inter quadro em consideração de um ou mais de um modo de predição, um erro preditivo e um estado de canal de transmissão.

Description

MÉTODO PARA QUANTIZAR, MÉTODO PARA DECODIFICAR, MÉTODO PARA CODIFICAR, E MEIO DE GRAVAÇÃO LEGÍVEL POR COMPUTADOR NÃO
TRANSITÓRIO Campo Técnico 5 Métodos e dispositivos consistentes com a presente revelação se referem à quantização e dequantização de coeficientes de codificação preditiva linear, e mais especificamente, a um método para eficientemente quantizar os coeficientes de codificação preditiva linear com baixa complexidade, um método de codificação de som empregando o método de quantização, um método para dequantizar os coeficientes de codificação preditiva linear, um método de decodificação de som empregando o método de dequantização, e um meio de gravação para os mesmos.
Fundamentos da Técnica Nos sistemas para codificar um som, tal como voz ou áudio, coeficientes de Codificação Preditiva Linear (LPC) são usados para representar uma característica de frequência de curto prazo do som. Os coeficientes LPC são 2O obtidos em um padrão de divisão de um som de entrada em unidades de quadro e minimizando a energia de um erro preditivo por quadro. Contudo, como os coeficientes LPC têm uma faixa dinâmica ampla e uma característica de um filtro LPC usado é muito sensível aos erros de quantização dos

Claims (11)

- REIVINDICAÇÕES -
1. MÉTODO PARA QUANTIZAR, caracterizado por compreender: selecionar, com base em um erro preditivo, um de um 5 primeiro módulo de quantização sem predição interquadro e um segundo módulo de quantização com predição interquadro, em um tipo laço aberto; e quantizar, executada por um processador, um sinal de entrada usando o módulo de quantização selecionado.
2. Método, de acordo com a reivindicação 1, caracterizado por o primeiro módulo de quantização compreende um quanti zador de treliça-estruturada com restrição em bloco e um preditivo intraquadro.
3. Método, de acordo com a reivindicação 1, caracterizado por o segundo módulo de quantização compreender um quantizador de treliça-estruturada com restrição em bloco, um preditivo intraquadro e um preditivo interquadro.
4. Método, de acordo com qualquer uma das reivindicações 2 e 3, caracterizado por o quantizador de treliça-estruturada ser configurado para buscar por um índice de quantização com base em uma função de ponderação.
5. Método, de acordo com a reivindicação 1, caracterizado por o erro preditivo ser baseado em uma função de ponderação.
6. Método, de acordo com a reivindicação 5,
caracterizado por a função de ponderação ser determinada usando pelo menos uma largura de banda, um modo de codificação, e informação de análise de espectro do sinal de entrada.
5
7. Método, de acordo com a reivindicação 1, caracterizado por selecionar compreender selecionar o primeiro módulo de quantização quando o sinal de entrada é não estacionário.
8. MÉTODO PARA DECODIFICAÇÃO, caracterizado por compreender: selecionar, com base em um parâmetro a partir de um fluxo de bits, um de um primeiro esquema de decodificação sem predição interquadro e um segundo esquema de decodificação com a predição interquadro, em um tipo laço aberto; e decodificar, executado por um processador, o fluxo de bits, com base no esquema de decodificação selecionado, sendo que o primeiro esquema de decodificação compreende um dequantizador de treliça-estruturada com restrição em bloco e um preditivo intraquadro.
9. Método, de acordo com a reivindicação 8, caracterizado por o segundo esquema de decodificação compreender um quantizador de treliça-estruturada com restrição em bloco, um preditivo intraquadro e um preditivo interquadro.
10. MÉTODO PARA CODIFICAR, caracterizado por compreender: selecionar, com base em um erro preditivo, um de um primeiro módulo de quantização sem predição inter quadro e um segundo módulo de quantização com um tipo de laço 5 aberto; quantizar um sinal de entrada mediante a utilização do módulo de quantização selecionado; e gerar um fluxo de bits com base em um de um resultado quantizado de primeiro módulo de quantização e um resultado quantizado do segundo módulo de quantização.
11. MEIO DE GRAVAÇÃO LEGÍVEL POR COMPUTADOR NÃO TRANSITÓRIO, caracterizado por ser para executar o método de qualquer uma das reivindicações 1 a 10.
BR112013027093-4A 2011-04-21 2012-04-23 Método para quantizar, método para decodificar, método para codificar, e meio de gravação legível por computador não transitório BR112013027093B1 (pt)

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BR122020023363-0A BR122020023363B1 (pt) 2011-04-21 2012-04-23 Método de decodificação
BR122020023350-8A BR122020023350B1 (pt) 2011-04-21 2012-04-23 método de quantização

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US201161477797P 2011-04-21 2011-04-21
US61/477,797 2011-04-21
US201161481874P 2011-05-03 2011-05-03
US61/481,874 2011-05-03
PCT/KR2012/003128 WO2012144878A2 (en) 2011-04-21 2012-04-23 Method of quantizing linear predictive coding coefficients, sound encoding method, method of de-quantizing linear predictive coding coefficients, sound decoding method, and recording medium

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BR112013027093A2 true BR112013027093A2 (pt) 2020-08-11
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BR122020023363-0A BR122020023363B1 (pt) 2011-04-21 2012-04-23 Método de decodificação
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EP (2) EP2700173A4 (pt)
JP (2) JP6178305B2 (pt)
KR (2) KR101863688B1 (pt)
CN (3) CN105719654B (pt)
AU (3) AU2012246799B2 (pt)
BR (3) BR112013027093B1 (pt)
CA (1) CA2833874C (pt)
MX (2) MX354812B (pt)
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