DK2571024T3 - Adaptiv overgangsfrekvens mellem støjfyldning og båndbreddeudvidelse - Google Patents

Adaptiv overgangsfrekvens mellem støjfyldning og båndbreddeudvidelse Download PDF

Info

Publication number
DK2571024T3
DK2571024T3 DK12196913.3T DK12196913T DK2571024T3 DK 2571024 T3 DK2571024 T3 DK 2571024T3 DK 12196913 T DK12196913 T DK 12196913T DK 2571024 T3 DK2571024 T3 DK 2571024T3
Authority
DK
Denmark
Prior art keywords
frequency
spectral
transition
spectral coefficients
transition frequency
Prior art date
Application number
DK12196913.3T
Other languages
English (en)
Inventor
Anisse Taleb
Manuel Briand
Original Assignee
Ericsson Telefon Ab L M
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=40387561&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK2571024(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of DK2571024T3 publication Critical patent/DK2571024T3/da

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
    • 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
    • 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
    • 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
    • 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

Claims (9)

1. Fremgangsmåde til spektrumgenvinding til spektralafkodning af et lydsignal, omfattende trinnene at: opnå (210) et indledende sæt (42) af spektralkoefficienter som repræsenterer lydsignalet; inddele spektralkoefficienterne af det indledende sæt (42) af spektralkoefficienter i en flerhed af frekvensbånd (74); bestemme (212) en overgangsfrekvens (ft); støjfylde (214) spektralhuller i det indledende sæt (42) af spektralkoefficienter under overgangsfrekvensen (ft); og båndbreddeforlænge (216) det indledende sæt (42) af spektralkoefficienter over overgangsfrekvensen (ft); hvor overgangsfrekvensen (ft) indstilles ved den øvre grænse af det første frekvensbånd set fra højfrekvenssiden som har en kvantiseret koefficient i sig.
2. Fremgangsmåde ifølge krav 1, hvor frekvensbåndene (74) haren konstant frekvensbredde.
3. Fremgangsmåde ifølge krav 1, hvor mindst to af frekvensbåndene (74) har forskellige frekvensbredder.
4. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvor trinnet at indstille overgangsfrekvensen (ft) endvidere er afhængigt af en tidligere anvendt overgangsfrekvens.
5. Fremgangsmåde ifølge krav 4, hvor trinnet at indstille overgangsfrekvensen (ft) endvidere er afhængigt af mere end en tidligere anvendt overgangsfrekvens.
6. Fremgangsmåde ifølge krav 4 eller 5, hvor overgangsfrekvensen (ft) forhindres i at ændre sig mere end en forudbestemt absolut eller relativ mængde mellem to konsekutive rammer.
7. Fremgangsmåde til anvendelse til spektralkodning af et lydsignal, omfattende: at inddele spektralkoefficienter af et indledende sæt (24; 42) af spektralkoefficienter som repræsenterer lydsignalet i en flerhed af frekvensbånd; at bestemme (212) en overgangsfrekvens (ft) til det indledende sæt (24; 42) af spektralkoefficienter som repræsenterer lydsignalet; hvor overgangsfrekvensen (ft) definerer en grænse mellem et frekvensområde, beregnet til at være genstand for støjfyldning af spektralhuller, og et frekvensområde, beregnet til at være genstand for båndbreddeudvidelse; hvor overgangsfrekvensen (ft) indstilles ved den øvre grænse af det første frekvensbånd set fra højfrekvenssiden som har en kvantiseret koefficient i sig.
8. Afkoder (40) til spektralafkodning af et lydsignal, omfattende: et input til at opnå et indledende sæt (42) af spektralkoefficienter som repræsenterer lydsignalet; et overgangsbestemmende kredsløb (60) indrettet til at bestemme en overgangsfrekvens (ft); en støjfylder (50) til støjfyldning af spektralhuller i det indledende sæt (42) af spektralkoefficienter under overgangsfrekvensen (ft); og en båndbreddeforlænger (55) indrettet til at båndbreddeforlænge det indledende sæt (42) af spektralkoefficienter over overgangsfrekvensen (ft); hvor det overgangsbestemmende kredsløb (60) er indrettet til at inddele spektralkoefficienterne af det indledende sæt af spektralkoefficienter i en flerhed af frekvensbånd (74), og til at bestemme overgangsfrekvensen (ft) som den øvre grænse af det første frekvensbånd set fra højfrekvenssiden som har en kvantiseret koefficient i sig.
9. Koder (20) til spektralkodning af et lydsignal, omfattende: overgangsbestemmende kredsløb (60) indrettet til at bestemme en overgangsfrekvens (ft) til et indledende sæt (24) af spektralkoefficienter som repræsenterer lydsignalet; hvor overgangsfrekvensen (ft) definerer en grænse mellem et frekvensområde, beregnet til at være genstand for støjfyldning af spektralhuller, og et frekvensområde, beregnet til at være genstand for båndbreddeudvidelse; hvor det overgangsbestemmende kredsløb (60) er indrettet til at inddele spektralkoefficienterne af det indledende sæt af spektralkoefficienter i en flerhed af frekvensbånd (74) og til at bestemme overgangsfrekvensen (ft) som den øvre grænse af det første frekvensbånd set fra højfrekvenssiden som har en kvantiseret koefficient i sig.
DK12196913.3T 2007-08-27 2008-08-26 Adaptiv overgangsfrekvens mellem støjfyldning og båndbreddeudvidelse DK2571024T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US96813407P 2007-08-27 2007-08-27
EP08828148A EP2186086B1 (en) 2007-08-27 2008-08-26 Adaptive transition frequency between noise fill and bandwidth extension

Publications (1)

Publication Number Publication Date
DK2571024T3 true DK2571024T3 (da) 2015-01-05

Family

ID=40387561

Family Applications (1)

Application Number Title Priority Date Filing Date
DK12196913.3T DK2571024T3 (da) 2007-08-27 2008-08-26 Adaptiv overgangsfrekvens mellem støjfyldning og båndbreddeudvidelse

Country Status (12)

Country Link
US (5) US9269372B2 (da)
EP (2) EP2571024B1 (da)
JP (2) JP5183741B2 (da)
CN (1) CN101939782B (da)
BR (1) BRPI0815972B1 (da)
DK (1) DK2571024T3 (da)
ES (2) ES2403410T3 (da)
HK (1) HK1143239A1 (da)
MX (1) MX2010001394A (da)
PL (1) PL2186086T3 (da)
PT (1) PT2571024E (da)
WO (1) WO2009029037A1 (da)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5183741B2 (ja) * 2007-08-27 2013-04-17 テレフオンアクチーボラゲット エル エム エリクソン（パブル） ノイズ補充と帯域拡張との間の遷移周波数の適合
EP2186089B1 (en) * 2007-08-27 2018-10-03 Telefonaktiebolaget LM Ericsson (publ) Method and device for perceptual spectral decoding of an audio signal including filling of spectral holes
KR20090110244A (ko) * 2008-04-17 2009-10-21 삼성전자주식회사 오디오 시맨틱 정보를 이용한 오디오 신호의 부호화/복호화 방법 및 그 장치
JP5622726B2 (ja) 2008-07-11 2014-11-12 フラウンホッファー−ゲゼルシャフト ツァ フェルダールング デァ アンゲヴァンテン フォアシュンク エー．ファオ オーディオエンコーダ、オーディオデコーダ、オーディオ信号を符号化および復号化する方法、オーディオストリームおよびコンピュータプログラム
JP4932917B2 (ja) 2009-04-03 2012-05-16 株式会社エヌ・ティ・ティ・ドコモ 音声復号装置、音声復号方法、及び音声復号プログラム
JP5754899B2 (ja) 2009-10-07 2015-07-29 ソニー株式会社 復号装置および方法、並びにプログラム
CN102194457B (zh) * 2010-03-02 2013-02-27 中兴通讯股份有限公司 音频编解码方法、系统及噪声水平估计方法
JPWO2011121955A1 (ja) 2010-03-30 2013-07-04 パナソニック株式会社 オーディオ装置
JP5609737B2 (ja) 2010-04-13 2014-10-22 ソニー株式会社 信号処理装置および方法、符号化装置および方法、復号装置および方法、並びにプログラム
JP5850216B2 (ja) 2010-04-13 2016-02-03 ソニー株式会社 信号処理装置および方法、符号化装置および方法、復号装置および方法、並びにプログラム
JP6075743B2 (ja) * 2010-08-03 2017-02-08 ソニー株式会社 信号処理装置および方法、並びにプログラム
US9391579B2 (en) * 2010-09-10 2016-07-12 Dts, Inc. Dynamic compensation of audio signals for improved perceived spectral imbalances
US9008811B2 (en) 2010-09-17 2015-04-14 Xiph.org Foundation Methods and systems for adaptive time-frequency resolution in digital data coding
JP5707842B2 (ja) 2010-10-15 2015-04-30 ソニー株式会社 符号化装置および方法、復号装置および方法、並びにプログラム
US20130173275A1 (en) * 2010-10-18 2013-07-04 Panasonic Corporation Audio encoding device and audio decoding device
US8838442B2 (en) 2011-03-07 2014-09-16 Xiph.org Foundation Method and system for two-step spreading for tonal artifact avoidance in audio coding
WO2012122297A1 (en) * 2011-03-07 2012-09-13 Xiph. Org. Methods and systems for avoiding partial collapse in multi-block audio coding
US9009036B2 (en) 2011-03-07 2015-04-14 Xiph.org Foundation Methods and systems for bit allocation and partitioning in gain-shape vector quantization for audio coding
CN102800317B (zh) * 2011-05-25 2014-09-17 华为技术有限公司 信号分类方法及设备、编解码方法及设备
JP2013015598A (ja) * 2011-06-30 2013-01-24 Zte Corp オーディオ符号化／復号化方法、システム及びノイズレベルの推定方法
MX370012B (es) * 2011-06-30 2019-11-28 Samsung Electronics Co Ltd Aparato y método para generar señal extendida de ancho de banda.
JP5416173B2 (ja) * 2011-07-07 2014-02-12 中興通訊股▲ふん▼有限公司 周波数帯コピー方法、装置及びオーディオ復号化方法、システム
CN102208188B (zh) * 2011-07-13 2013-04-17 华为技术有限公司 音频信号编解码方法和设备
CN106409299B (zh) * 2012-03-29 2019-11-05 华为技术有限公司 信号编码和解码的方法和设备
EP2665208A1 (en) 2012-05-14 2013-11-20 Thomson Licensing Method and apparatus for compressing and decompressing a Higher Order Ambisonics signal representation
US9881616B2 (en) * 2012-06-06 2018-01-30 Qualcomm Incorporated Method and systems having improved speech recognition
US9633662B2 (en) * 2012-09-13 2017-04-25 Lg Electronics Inc. Frame loss recovering method, and audio decoding method and device using same
CN103778918B (zh) * 2012-10-26 2016-09-07 华为技术有限公司 音频信号的比特分配的方法和装置
CN103854653B (zh) 2012-12-06 2016-12-28 华为技术有限公司 信号解码的方法和设备
KR101778217B1 (ko) * 2013-01-29 2017-09-13 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 노이즈 채움 개념
CN103971693B (zh) 2013-01-29 2017-02-22 华为技术有限公司 高频带信号的预测方法、编/解码设备
CN103971694B (zh) * 2013-01-29 2016-12-28 华为技术有限公司 带宽扩展频带信号的预测方法、解码设备
BR112015025022B1 (pt) 2013-04-05 2022-03-29 Dolby International Ab Método de decodificação, decodificador em um sistema de processamento de áudio, método de codificação, e codificador em um sistema de processamento de áudio
EP2981960B1 (en) * 2013-04-05 2019-03-13 Dolby International AB Stereo audio encoder and decoder
EP2830064A1 (en) * 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for decoding and encoding an audio signal using adaptive spectral tile selection
CN105531762B (zh) 2013-09-19 2019-10-01 索尼公司 编码装置和方法、解码装置和方法以及程序
TR201802303T4 (tr) * 2013-10-31 2018-03-21 Fraunhofer Ges Forschung Frekans alanında zamansal ön şekillendirilmiş gürültü eklenmesiyle ses bant genişliği uzatma.
KR102356012B1 (ko) 2013-12-27 2022-01-27 소니그룹주식회사 복호화 장치 및 방법, 및 프로그램
EP2980792A1 (en) 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for generating an enhanced signal using independent noise-filling
EP2980794A1 (en) * 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoder and decoder using a frequency domain processor and a time domain processor
EP2980795A1 (en) 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoding and decoding using a frequency domain processor, a time domain processor and a cross processor for initialization of the time domain processor
ES2797092T3 (es) * 2016-03-07 2020-12-01 Fraunhofer Ges Forschung Técnicas de ocultamiento híbrido: combinación de ocultamiento de pérdida paquete de dominio de frecuencia y tiempo en códecs de audio
WO2017178329A1 (en) 2016-04-12 2017-10-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoder for encoding an audio signal, method for encoding an audio signal and computer program under consideration of a detected peak spectral region in an upper frequency band
EP3592098B1 (en) 2017-03-18 2021-12-29 Huawei Technologies Co., Ltd. Connection recovery methods, access and mobility management function entity, user equipment, computer program product and communications system
EP3382703A1 (en) * 2017-03-31 2018-10-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and methods for processing an audio signal

Family Cites Families (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5583961A (en) * 1993-03-25 1996-12-10 British Telecommunications Public Limited Company Speaker recognition using spectral coefficients normalized with respect to unequal frequency bands
US5664057A (en) * 1993-07-07 1997-09-02 Picturetel Corporation Fixed bit rate speech encoder/decoder
SE9903553D0 (sv) * 1999-01-27 1999-10-01 Lars Liljeryd Enhancing percepptual performance of SBR and related coding methods by adaptive noise addition (ANA) and noise substitution limiting (NSL)
US6226616B1 (en) * 1999-06-21 2001-05-01 Digital Theater Systems, Inc. Sound quality of established low bit-rate audio coding systems without loss of decoder compatibility
US7742927B2 (en) * 2000-04-18 2010-06-22 France Telecom Spectral enhancing method and device
SE0004163D0 (sv) * 2000-11-14 2000-11-14 Coding Technologies Sweden Ab Enhancing perceptual performance of high frequency reconstruction coding methods by adaptive filtering
SE0004187D0 (sv) * 2000-11-15 2000-11-15 Coding Technologies Sweden Ab Enhancing the performance of coding systems that use high frequency reconstruction methods
SE522553C2 (sv) * 2001-04-23 2004-02-17 Ericsson Telefon Ab L M Bandbreddsutsträckning av akustiska signaler
DE60209888T2 (de) * 2001-05-08 2006-11-23 Koninklijke Philips Electronics N.V. Kodieren eines audiosignals
US6493668B1 (en) * 2001-06-15 2002-12-10 Yigal Brandman Speech feature extraction system
AU2002318813B2 (en) * 2001-07-13 2004-04-29 Matsushita Electric Industrial Co., Ltd. Audio signal decoding device and audio signal encoding device
US6988066B2 (en) * 2001-10-04 2006-01-17 At&T Corp. Method of bandwidth extension for narrow-band speech
US6895375B2 (en) * 2001-10-04 2005-05-17 At&T Corp. System for bandwidth extension of Narrow-band speech
DE60214027T2 (de) * 2001-11-14 2007-02-15 Matsushita Electric Industrial Co., Ltd., Kadoma Kodiervorrichtung und dekodiervorrichtung
US7469206B2 (en) * 2001-11-29 2008-12-23 Coding Technologies Ab Methods for improving high frequency reconstruction
US20030187663A1 (en) * 2002-03-28 2003-10-02 Truman Michael Mead Broadband frequency translation for high frequency regeneration
GB2388502A (en) * 2002-05-10 2003-11-12 Chris Dunn Compression of frequency domain audio signals
US7447631B2 (en) * 2002-06-17 2008-11-04 Dolby Laboratories Licensing Corporation Audio coding system using spectral hole filling
US7330812B2 (en) * 2002-10-04 2008-02-12 National Research Council Of Canada Method and apparatus for transmitting an audio stream having additional payload in a hidden sub-channel
JP2004134900A (ja) * 2002-10-09 2004-04-30 Matsushita Electric Ind Co Ltd 符号化信号復号化装置および復号化方法
FR2852172A1 (fr) * 2003-03-04 2004-09-10 France Telecom Procede et dispositif de reconstruction spectrale d'un signal audio
EP1642265B1 (en) * 2003-06-30 2010-10-27 Koninklijke Philips Electronics N.V. Improving quality of decoded audio by adding noise
CA2457988A1 (en) 2004-02-18 2005-08-18 Voiceage Corporation Methods and devices for audio compression based on acelp/tcx coding and multi-rate lattice vector quantization
JP2006087018A (ja) * 2004-09-17 2006-03-30 Matsushita Electric Ind Co Ltd 音響処理装置
KR20070065401A (ko) * 2004-09-23 2007-06-22 코닌클리케 필립스 일렉트로닉스 엔.브이. 오디오 데이터를 처리하는 시스템 및 방법, 프로그램구성요소, 및 컴퓨터-판독가능 매체
KR100707186B1 (ko) * 2005-03-24 2007-04-13 삼성전자주식회사 오디오 부호화 및 복호화 장치와 그 방법 및 기록 매체
US7885809B2 (en) * 2005-04-20 2011-02-08 Ntt Docomo, Inc. Quantization of speech and audio coding parameters using partial information on atypical subsequences
KR101171098B1 (ko) * 2005-07-22 2012-08-20 삼성전자주식회사 혼합 구조의 스케일러블 음성 부호화 방법 및 장치
US8332216B2 (en) * 2006-01-12 2012-12-11 Stmicroelectronics Asia Pacific Pte., Ltd. System and method for low power stereo perceptual audio coding using adaptive masking threshold
WO2007121778A1 (en) * 2006-04-24 2007-11-01 Nero Ag Advanced audio coding apparatus
KR20070115637A (ko) * 2006-06-03 2007-12-06 삼성전자주식회사 대역폭 확장 부호화 및 복호화 방법 및 장치
US20080109215A1 (en) * 2006-06-26 2008-05-08 Chi-Min Liu High frequency reconstruction by linear extrapolation
US8135047B2 (en) * 2006-07-31 2012-03-13 Qualcomm Incorporated Systems and methods for including an identifier with a packet associated with a speech signal
US20080208575A1 (en) * 2007-02-27 2008-08-28 Nokia Corporation Split-band encoding and decoding of an audio signal
US7761290B2 (en) * 2007-06-15 2010-07-20 Microsoft Corporation Flexible frequency and time partitioning in perceptual transform coding of audio
US7885819B2 (en) * 2007-06-29 2011-02-08 Microsoft Corporation Bitstream syntax for multi-process audio decoding
JP5183741B2 (ja) * 2007-08-27 2013-04-17 テレフオンアクチーボラゲット エル エム エリクソン（パブル） ノイズ補充と帯域拡張との間の遷移周波数の適合
CA2698039C (en) * 2007-08-27 2016-05-17 Telefonaktiebolaget Lm Ericsson (Publ) Low-complexity spectral analysis/synthesis using selectable time resolution
CN101790756B (zh) * 2007-08-27 2012-09-05 爱立信电话股份有限公司 瞬态检测器以及用于支持音频信号的编码的方法
EP2186089B1 (en) * 2007-08-27 2018-10-03 Telefonaktiebolaget LM Ericsson (publ) Method and device for perceptual spectral decoding of an audio signal including filling of spectral holes
US9117458B2 (en) * 2009-11-12 2015-08-25 Lg Electronics Inc. Apparatus for processing an audio signal and method thereof

Also Published As

Publication number Publication date
BRPI0815972A8 (pt) 2017-11-14
US10878829B2 (en) 2020-12-29
PL2186086T3 (pl) 2013-07-31
CN101939782A (zh) 2011-01-05
EP2571024B1 (en) 2014-10-22
EP2186086B1 (en) 2013-01-23
JP5183741B2 (ja) 2013-04-17
US20110264454A1 (en) 2011-10-27
EP2571024A1 (en) 2013-03-20
US20170301358A1 (en) 2017-10-19
JP5458189B2 (ja) 2014-04-02
US20160086614A1 (en) 2016-03-24
ES2526333T3 (es) 2015-01-09
US9711154B2 (en) 2017-07-18
ES2403410T3 (es) 2013-05-17
BRPI0815972A2 (pt) 2015-09-29
CN101939782B (zh) 2012-12-05
JP2010538318A (ja) 2010-12-09
JP2013117730A (ja) 2013-06-13
US20210110836A1 (en) 2021-04-15
EP2186086A4 (en) 2012-01-25
US20190122680A1 (en) 2019-04-25
US9269372B2 (en) 2016-02-23
HK1143239A1 (en) 2010-12-24
BRPI0815972B1 (pt) 2020-02-04
PT2571024E (pt) 2014-12-23
WO2009029037A1 (en) 2009-03-05
US10199049B2 (en) 2019-02-05
MX2010001394A (es) 2010-03-10
EP2186086A1 (en) 2010-05-19

Similar Documents

Publication Publication Date Title
US10878829B2 (en) Adaptive transition frequency between noise fill and bandwidth extension
US8370133B2 (en) Method and device for noise filling
RU2469422C2 (ru) Способ и устройство для формирования уровня улучшения в системе кодирования звука
US7761290B2 (en) Flexible frequency and time partitioning in perceptual transform coding of audio
EP2272063B1 (en) Method and apparatus for selective signal coding based on core encoder performance
US7277849B2 (en) Efficiency improvements in scalable audio coding
JP2016514858A (ja) オーディオ処理システム
EP3217398B1 (en) Advanced quantizer
US20130197919A1 (en) "method and device for determining a number of bits for encoding an audio signal"