MX2022015324A - Metodos y dispositivos para codificar y/o decodificar ruido de fondo espacial dentro de una se?al de entrada multicanal. - Google Patents

Metodos y dispositivos para codificar y/o decodificar ruido de fondo espacial dentro de una se?al de entrada multicanal.

Info

Publication number
MX2022015324A
MX2022015324A MX2022015324A MX2022015324A MX2022015324A MX 2022015324 A MX2022015324 A MX 2022015324A MX 2022015324 A MX2022015324 A MX 2022015324A MX 2022015324 A MX2022015324 A MX 2022015324A MX 2022015324 A MX2022015324 A MX 2022015324A
Authority
MX
Mexico
Prior art keywords
encoding
input signal
channel input
frame
signal
Prior art date
Application number
MX2022015324A
Other languages
English (en)
Inventor
Michael Eckert
Rishabh Tyagi
Original Assignee
Dolby Laboratories Licensing Corp
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 Dolby Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
Publication of MX2022015324A publication Critical patent/MX2022015324A/es

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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
    • G10L19/008—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 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
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L21/0224—Processing in the time domain
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • 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
    • G10L19/012—Comfort noise or silence coding

Abstract

El presente documento describe un método (600) para codificar una señal de entrada multicanal (101) que comprende N canales diferentes. El método (600) comprende, para un cuadro actual de una secuencia de cuadros, determinar (601) si el cuadro actual es un cuadro activo o un cuadro inactivo usando una señal y/o un detector de actividad de voz, y determinar (602) un señal de mezcla descendente (103) basada en la señal de entrada multicanal (101), en donde la señal de mezcla descendente (103) comprende N canales o menos. Además, el método (600) comprende determinar (603) metadatos de mezcla ascendente (105) que comprenden un conjunto de parámetros para generar, con base en la señal de mezcla descendente (103), una señal multicanal reconstruida (111) que comprende N canales, en donde los metadatos de mezcla ascendente (105) se determinan dependiendo de si el cuadro actual es un cuadro activo o un cuadro inactivo. El método (600) comprende además codificar (604) los metadatos de mezcla ascendente (105) en un flujo de bits.
MX2022015324A 2020-06-11 2021-06-10 Metodos y dispositivos para codificar y/o decodificar ruido de fondo espacial dentro de una se?al de entrada multicanal. MX2022015324A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US202063037650P 2020-06-11 2020-06-11
US202163193946P 2021-05-27 2021-05-27
PCT/US2021/036714 WO2021252705A1 (en) 2020-06-11 2021-06-10 Methods and devices for encoding and/or decoding spatial background noise within a multi-channel input signal

Publications (1)

Publication Number Publication Date
MX2022015324A true MX2022015324A (es) 2023-02-27

Family

ID=76845310

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2022015324A MX2022015324A (es) 2020-06-11 2021-06-10 Metodos y dispositivos para codificar y/o decodificar ruido de fondo espacial dentro de una se?al de entrada multicanal.

Country Status (11)

Country Link
US (1) US20230215445A1 (es)
EP (1) EP4165629A1 (es)
JP (1) JP2023530409A (es)
KR (1) KR20230023725A (es)
CN (1) CN115867964A (es)
AU (1) AU2021288690A1 (es)
BR (1) BR112022025226A2 (es)
CA (1) CA3185659A1 (es)
IL (1) IL298725A (es)
MX (1) MX2022015324A (es)
WO (1) WO2021252705A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024051955A1 (en) * 2022-09-09 2024-03-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Decoder and decoding method for discontinuous transmission of parametrically coded independent streams with metadata
WO2024051954A1 (en) * 2022-09-09 2024-03-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Encoder and encoding method for discontinuous transmission of parametrically coded independent streams with metadata

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104050969A (zh) 2013-03-14 2014-09-17 杜比实验室特许公司 空间舒适噪声
EP3511934B1 (en) * 2016-09-28 2021-04-21 Huawei Technologies Co., Ltd. Method, apparatus and system for processing multi-channel audio signal
WO2019193173A1 (en) * 2018-04-05 2019-10-10 Telefonaktiebolaget Lm Ericsson (Publ) Truncateable predictive coding
EP3815082B1 (en) * 2018-06-28 2023-08-02 Telefonaktiebolaget Lm Ericsson (Publ) Adaptive comfort noise parameter determination

Also Published As

Publication number Publication date
EP4165629A1 (en) 2023-04-19
CN115867964A (zh) 2023-03-28
JP2023530409A (ja) 2023-07-18
IL298725A (en) 2023-02-01
BR112022025226A2 (pt) 2023-01-03
WO2021252705A1 (en) 2021-12-16
CA3185659A1 (en) 2021-12-16
US20230215445A1 (en) 2023-07-06
KR20230023725A (ko) 2023-02-17
AU2021288690A1 (en) 2023-01-19

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