MX2020004790A - Aparato y método para codificar y decodificar una señal de audio usando submuestreo o interpolación de parámetros de escala. - Google Patents

Aparato y método para codificar y decodificar una señal de audio usando submuestreo o interpolación de parámetros de escala.

Info

Publication number
MX2020004790A
MX2020004790A MX2020004790A MX2020004790A MX2020004790A MX 2020004790 A MX2020004790 A MX 2020004790A MX 2020004790 A MX2020004790 A MX 2020004790A MX 2020004790 A MX2020004790 A MX 2020004790A MX 2020004790 A MX2020004790 A MX 2020004790A
Authority
MX
Mexico
Prior art keywords
scale parameters
scale
representation
parameters
audio signal
Prior art date
Application number
MX2020004790A
Other languages
English (en)
Inventor
Emmanuel Ravelli
Martin Dietz
Conrad Benndorf
Manfred Lutzky
Markus Schnell
Srikanth Korse
Original Assignee
Fraunhofer Ges Forschung
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 Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of MX2020004790A publication Critical patent/MX2020004790A/es

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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
    • G10L19/002—Dynamic bit allocation
    • 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
    • G10L19/02—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

Landscapes

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

Abstract

Un aparato para codificar una señal de audio (160), que comprende: un conversor (100) para convertir la señal de audio en una representación espectral; un calculador de parámetros de escala (110) para calcular un primer conjunto de parámetros de escala a partir de la representación espectral; un submuestreador (130) para submuestrear el primer conjunto de parámetros de escala para obtener un segundo conjunto de parámetros de escala, donde un segundo número de los parámetros de escala en el segundo conjunto de parámetros de escala es menor que un primer númerode parámetros de escala en el primer conjunto de parámetros de escala; un codificador de parámetros de escala (140) para generar una representación codificada del segundo conjunto de parámetros de escala; un procesador espectral (120) para procesar la representación espectral usando un tercer conjunto de parámetros de escala, el tercer conjunto de parámetros de escala tiene un tercer número de parámetros de escala que es mayor que el segundo número de parámetros de escala, donde el procesador espectral (120) está configurado para usar el primer conjunto de parámetros de escala o derivar el tercer conjunto de parámetros de escala del segundo conjunto de parámetros de escala o de la representación codificada del segundo conjunto de parámetros de escala usando una operación de interpolación; y una interfaz de salida (150) para generar una señal de salida codificada (170) que comprende información sobre la representación codificada de la representación espectral e información sobre la representación codificada del segundo conjunto de parámetros de escala.
MX2020004790A 2017-11-10 2018-11-05 Aparato y método para codificar y decodificar una señal de audio usando submuestreo o interpolación de parámetros de escala. MX2020004790A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/EP2017/078921 WO2019091573A1 (en) 2017-11-10 2017-11-10 Apparatus and method for encoding and decoding an audio signal using downsampling or interpolation of scale parameters
PCT/EP2018/080137 WO2019091904A1 (en) 2017-11-10 2018-11-05 Apparatus and method for encoding and decoding an audio signal using downsampling or interpolation of scale parameters

Publications (1)

Publication Number Publication Date
MX2020004790A true MX2020004790A (es) 2020-08-13

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MX2020004790A MX2020004790A (es) 2017-11-10 2018-11-05 Aparato y método para codificar y decodificar una señal de audio usando submuestreo o interpolación de parámetros de escala.

Country Status (17)

Country Link
US (1) US11043226B2 (es)
EP (2) EP4375995B1 (es)
JP (1) JP7073491B2 (es)
KR (1) KR102423959B1 (es)
CN (1) CN111357050B (es)
AR (2) AR113483A1 (es)
AU (1) AU2018363652B2 (es)
CA (2) CA3081634C (es)
ES (2) ES3036070T3 (es)
MX (1) MX2020004790A (es)
MY (1) MY207090A (es)
PL (2) PL4375995T3 (es)
RU (1) RU2762301C2 (es)
SG (1) SG11202004170QA (es)
TW (1) TWI713927B (es)
WO (2) WO2019091573A1 (es)
ZA (1) ZA202002077B (es)

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US12406037B2 (en) * 2019-12-18 2025-09-02 Booz Allen Hamilton Inc. System and method for digital steganography purification
JP7641355B2 (ja) * 2020-07-07 2025-03-06 フラウンホーファー－ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン オーディオ量子化器、オーディオ逆量子化器、および関連する方法
CN115050378B (zh) * 2022-05-19 2024-06-07 腾讯科技（深圳）有限公司 音频编解码方法及相关产品
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