MX367639B - Codificador, decodificador, método de codificación, método de decodificación y programa. - Google Patents

Codificador, decodificador, método de codificación, método de decodificación y programa.

Info

Publication number
MX367639B
MX367639B MX2016010595A MX2016010595A MX367639B MX 367639 B MX367639 B MX 367639B MX 2016010595 A MX2016010595 A MX 2016010595A MX 2016010595 A MX2016010595 A MX 2016010595A MX 367639 B MX367639 B MX 367639B
Authority
MX
Mexico
Prior art keywords
frequency
signal
encoder
low
decoded
Prior art date
Application number
MX2016010595A
Other languages
English (en)
Other versions
MX2016010595A (es
Inventor
Nagisetty Srikanth
Ehara Hiroyuki
Xian LIU Zong
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 MX2016010595A publication Critical patent/MX2016010595A/es
Publication of MX367639B publication Critical patent/MX367639B/es

Links

Classifications

    • 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
    • G10L19/02—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 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
    • G10L19/02—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 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
    • G10L19/02—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
    • G10L19/028—Noise substitution, i.e. substituting non-tonal spectral components by noisy source
    • 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
    • G10L19/02—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
    • G10L19/035—Scalar quantisation
    • 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal 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

Abstract

Un codificador de conformidad con la presente descripción incluye una primera unidad de codificación que genera una primera señal codificada en la cual una señal de banda baja que tiene una frecuencia más baja que o igual a una frecuencia predeterminada de una señal de entrada de voz o audio se codifica y una señal decodificada de banda baja; una segunda unidad de codificación que codifica, con base en la señal decodificada de banda baja, una señal de banda alta que tiene una banda más alta que aquella de la señal de banda baja para generar una señal codificada de banda alta; y una primera unidad de multiplexión que multiplexa la primera señal codificada y la señal codificada de banda alta para generar y enviar una señal codificada. La segunda unidad de codificación calcula una relación de energía entre un componente de ruido de banda alta, el cual es un componente de ruido de la señal de banda alta, y un componente no tonal de banda alta de una señal decodificada de banda alta generada a partir de la señal decodificada de banda baja y envía la relación calculada como la señal codificada de banda alta.
MX2016010595A 2014-03-31 2015-03-23 Codificador, decodificador, método de codificación, método de decodificación y programa. MX367639B (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201461972722P 2014-03-31 2014-03-31
JP2014153832 2014-07-29
PCT/JP2015/001601 WO2015151451A1 (ja) 2014-03-31 2015-03-23 符号化装置、復号装置、符号化方法、復号方法、およびプログラム

Publications (2)

Publication Number Publication Date
MX2016010595A MX2016010595A (es) 2016-11-29
MX367639B true MX367639B (es) 2019-08-29

Family

ID=54239798

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2016010595A MX367639B (es) 2014-03-31 2015-03-23 Codificador, decodificador, método de codificación, método de decodificación y programa.

Country Status (10)

Country Link
US (3) US10269361B2 (es)
EP (2) EP3128513B1 (es)
JP (1) JPWO2015151451A1 (es)
KR (1) KR102121642B1 (es)
CN (1) CN105874534B (es)
BR (1) BR112016019838B1 (es)
MX (1) MX367639B (es)
PL (1) PL3128513T3 (es)
RU (1) RU2689181C2 (es)
WO (1) WO2015151451A1 (es)

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Also Published As

Publication number Publication date
KR102121642B1 (ko) 2020-06-10
RU2016138694A (ru) 2018-05-07
PL3128513T3 (pl) 2019-11-29
EP3128513B1 (en) 2019-05-15
JPWO2015151451A1 (ja) 2017-04-13
EP3128513A4 (en) 2017-03-29
EP3550563B1 (en) 2024-03-06
EP3550563A1 (en) 2019-10-09
MX2016010595A (es) 2016-11-29
BR112016019838A2 (es) 2017-08-15
KR20160138373A (ko) 2016-12-05
US20220130402A1 (en) 2022-04-28
US20190251979A1 (en) 2019-08-15
BR112016019838B1 (pt) 2023-02-23
EP3128513A1 (en) 2017-02-08
WO2015151451A1 (ja) 2015-10-08
RU2016138694A3 (es) 2018-08-27
US20160336017A1 (en) 2016-11-17
CN105874534B (zh) 2020-06-19
CN105874534A (zh) 2016-08-17
US11232803B2 (en) 2022-01-25
CN111710342A (zh) 2020-09-25
US10269361B2 (en) 2019-04-23
RU2689181C2 (ru) 2019-05-24

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