BR112022024351A2 - Método e aparelho de codificação de áudio e meio de armazenamento legível por computador - Google Patents

Método e aparelho de codificação de áudio e meio de armazenamento legível por computador

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Publication number
BR112022024351A2
BR112022024351A2 BR112022024351A BR112022024351A BR112022024351A2 BR 112022024351 A2 BR112022024351 A2 BR 112022024351A2 BR 112022024351 A BR112022024351 A BR 112022024351A BR 112022024351 A BR112022024351 A BR 112022024351A BR 112022024351 A2 BR112022024351 A2 BR 112022024351A2
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BR
Brazil
Prior art keywords
encoding
frequency band
band signal
audio
current frame
Prior art date
Application number
BR112022024351A
Other languages
English (en)
Inventor
Xia Bingyin
Li Jiawei
Wang Zhe
Original Assignee
Huawei Tech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Tech Co Ltd filed Critical Huawei Tech Co Ltd
Publication of BR112022024351A2 publication Critical patent/BR112022024351A2/pt

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Classifications

    • 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
    • G10L19/0204—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 using subband decomposition
    • 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
    • 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
    • G10L19/0204—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 using subband decomposition
    • G10L19/0208—Subband 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
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • 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
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • G10L21/0388—Details of processing therefor

Landscapes

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

Abstract

MÉTODO E APARELHO DE CODIFICAÇÃO DE ÁUDIO E MEIO DE ARMAZENAMENTO LEGÍVEL POR COMPUTADOR. A presente invenção refere-se a um método e aparelho de codificação de áudio que são fornecidos para melhorar a eficiência da codificação do sinal de áudio. No método de codificação de áudio, é obtido um quadro atual de um sinal de áudio, onde o quadro atual inclui um sinal de banda de alta frequência e um sinal de banda de baixa frequência (401); primeira codificação é executada no sinal de banda de alta frequência e no sinal de banda de baixa frequência, para obter um primeiro parâmetro de codificação do quadro atual, onde a primeira codificação inclui codificação de extensão de largura de banda (402); um sinalizador de reserva de espectro de cada compartimento de frequência do sinal de banda de alta frequência é determinado, onde o sinalizador de reserva de espectro indica se um primeiro espectro correspondente ao compartimento de frequência está reservado em um segundo espectro correspondente ao compartimento de frequência (403); a segunda codificação é executada no sinal de banda de alta frequência com base no sinalizador de reserva de espectro de cada compartimento de frequência do sinal de banda de alta frequência, para obter um segundo parâmetro de codificação do quadro atual, em que o segundo parâmetro de codificação indica informações sobre um componente tonal-alvo do sinal de banda de alta frequência (404); e a multiplexação de fluxo de bits é executada no primeiro parâmetro de codificação e no segundo parâmetro de codificação, para obter um fluxo de bits codificado (405).
BR112022024351A 2020-05-30 2021-05-28 Método e aparelho de codificação de áudio e meio de armazenamento legível por computador BR112022024351A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010480925.6A CN113808596A (zh) 2020-05-30 2020-05-30 一种音频编码方法和音频编码装置
PCT/CN2021/096688 WO2021244418A1 (zh) 2020-05-30 2021-05-28 一种音频编码方法和音频编码装置

Publications (1)

Publication Number Publication Date
BR112022024351A2 true BR112022024351A2 (pt) 2022-12-27

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Country Status (6)

Country Link
US (1) US20230137053A1 (pt)
EP (1) EP4152317A4 (pt)
KR (1) KR20230018495A (pt)
CN (1) CN113808596A (pt)
BR (1) BR112022024351A2 (pt)
WO (1) WO2021244418A1 (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
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CN117476013A (zh) * 2022-07-27 2024-01-30 华为技术有限公司 音频信号的处理方法、装置、存储介质及计算机程序产品

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Also Published As

Publication number Publication date
EP4152317A4 (en) 2023-08-16
KR20230018495A (ko) 2023-02-07
EP4152317A1 (en) 2023-03-22
WO2021244418A1 (zh) 2021-12-09
US20230137053A1 (en) 2023-05-04
CN113808596A (zh) 2021-12-17

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