MX2018008886A - Aparato y metodo para estereo mdct m/s con ild global con decision medio/lado mejorada. - Google Patents

Aparato y metodo para estereo mdct m/s con ild global con decision medio/lado mejorada.

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Publication number
MX2018008886A
MX2018008886A MX2018008886A MX2018008886A MX2018008886A MX 2018008886 A MX2018008886 A MX 2018008886A MX 2018008886 A MX2018008886 A MX 2018008886A MX 2018008886 A MX2018008886 A MX 2018008886A MX 2018008886 A MX2018008886 A MX 2018008886A
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MX
Mexico
Prior art keywords
channel
audio signal
signal
depending
spectral band
Prior art date
Application number
MX2018008886A
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English (en)
Inventor
Schnell Markus
Fuchs Guillaume
Döhla Stefan
Markovic Goran
Helmrich Christian
Multrus Markus
Ravelli Emmanuel
Dietz Martin
Fotopoulou Eleni
Bayer Stefan
Jägers Wolfgang
Herre Jürgen
Original Assignee
Fraunhofer Ges Zur Foerderung Der Angewandten Forscng E V
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Application filed by Fraunhofer Ges Zur Foerderung Der Angewandten Forscng E V filed Critical Fraunhofer Ges Zur Foerderung Der Angewandten Forscng E V
Publication of MX2018008886A publication Critical patent/MX2018008886A/es

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    • 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
    • G10L19/02—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
    • G10L19/03—Spectral prediction for preventing pre-echo; Temporary noise shaping [TNS], e.g. in MPEG2 or MPEG4
    • 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
    • G10L19/0204—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
    • G10L19/0212—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 orthogonal transformation
    • 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

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)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

La Fig. 1 ilustra un aparato para codificar un primer canal y un segundo canal de una señal de entrada de audio que comprende dos o más canales para obtener una señal de audio codificada de acuerdo con una forma de realización. El aparato comprende un normalizador (110) configurado para determinar un valor de normalización correspondiente a la señal de entrada de audio dependiendo del primer canal de la señal de entrada de audio y dependiendo del segundo canal de la señal de entrada de audio, donde el normalizador (110) está configurado para determinar un primer canal y un segundo canal de una señal de audio normalizada mediante la modificación, dependiendo del valor de normalización, de por lo menos uno del primer canal y el segundo canal de la señal de entrada de audio. Más aun, el aparato comprende una unidad codificadora (120) que está configurada para generar una señal de audio procesada que tiene un primer canal y un segundo canal, de tal manera que una o más bandas espectrales del primer canal de la señal de audio procesada sean una o más bandas espectrales del primer canal de la señal de audio normalizada, de tal manera que una o más bandas espectrales del segundo canal de la señal de audio procesada sean una o más bandas espectrales del segundo canal de la señal de audio normalizada, de tal manera que por lo menos una banda espectral del primer canal de la señal de audio procesada sea una banda espectral de una señal media dependiendo de una banda espectral del primer canal de la señal de audio normalizada y dependiendo de una banda espectral del segundo canal de la señal de audio normalizada, y de tal manera que por lo menos una banda espectral del segundo canal de la señal de audio procesada sea una banda espectral de una señal lateral dependiendo de una banda espectral del primer canal de la señal de audio normalizada y dependiendo de una banda espectral del segundo canal de la señal de audio normalizada, La unidad codificadora (120) está configurada para codificar la señal de audio procesada para obtener la señal de audio codificada.
MX2018008886A 2016-01-22 2017-01-20 Aparato y metodo para estereo mdct m/s con ild global con decision medio/lado mejorada. MX2018008886A (es)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP16152457 2016-01-22
EP16152454 2016-01-22
EP16199895 2016-11-21
PCT/EP2017/051177 WO2017125544A1 (en) 2016-01-22 2017-01-20 Apparatus and method for mdct m/s stereo with global ild with improved mid/side decision

Publications (1)

Publication Number Publication Date
MX2018008886A true MX2018008886A (es) 2018-11-09

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MX2018008886A MX2018008886A (es) 2016-01-22 2017-01-20 Aparato y metodo para estereo mdct m/s con ild global con decision medio/lado mejorada.

Country Status (18)

Country Link
US (2) US11842742B2 (es)
EP (2) EP3405950B1 (es)
JP (3) JP6864378B2 (es)
KR (1) KR102230668B1 (es)
CN (2) CN117542365A (es)
AU (1) AU2017208561B2 (es)
BR (1) BR112018014813A2 (es)
CA (1) CA3011883C (es)
ES (1) ES2932053T3 (es)
FI (1) FI3405950T3 (es)
MX (1) MX2018008886A (es)
MY (1) MY188905A (es)
PL (1) PL3405950T3 (es)
RU (1) RU2713613C1 (es)
SG (1) SG11201806256SA (es)
TW (1) TWI669704B (es)
WO (1) WO2017125544A1 (es)
ZA (1) ZA201804866B (es)

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CN115132214A (zh) 2018-06-29 2022-09-30 华为技术有限公司 立体声信号的编码、解码方法、编码装置和解码装置
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JP2021119383A (ja) 2021-08-12
EP3405950B1 (en) 2022-09-28
EP4123645A1 (en) 2023-01-25
PL3405950T3 (pl) 2023-01-30
AU2017208561A1 (en) 2018-08-09
WO2017125544A1 (en) 2017-07-27
AU2017208561B2 (en) 2020-04-16
TW201732780A (zh) 2017-09-16
US20240071395A1 (en) 2024-02-29
SG11201806256SA (en) 2018-08-30
CN109074812A (zh) 2018-12-21
EP3405950A1 (en) 2018-11-28
JP2019506633A (ja) 2019-03-07
KR102230668B1 (ko) 2021-03-22
JP6864378B2 (ja) 2021-04-28
ES2932053T3 (es) 2023-01-09
MY188905A (en) 2022-01-13
US11842742B2 (en) 2023-12-12
FI3405950T3 (fi) 2022-12-15
JP7280306B2 (ja) 2023-05-23
ZA201804866B (en) 2019-04-24
KR20180103102A (ko) 2018-09-18
CA3011883C (en) 2020-10-27
TWI669704B (zh) 2019-08-21
US20180330740A1 (en) 2018-11-15
CN117542365A (zh) 2024-02-09
CA3011883A1 (en) 2017-07-27
JP2023109851A (ja) 2023-08-08
BR112018014813A2 (pt) 2018-12-18
RU2713613C1 (ru) 2020-02-05
CN109074812B (zh) 2023-11-17

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