BRPI0306434A8 - Aparelho e método de decodificação de áudio - Google Patents

Aparelho e método de decodificação de áudio

Info

Publication number
BRPI0306434A8
BRPI0306434A8 BRPI0306434A BR0306434A BRPI0306434A8 BR PI0306434 A8 BRPI0306434 A8 BR PI0306434A8 BR PI0306434 A BRPI0306434 A BR PI0306434A BR 0306434 A BR0306434 A BR 0306434A BR PI0306434 A8 BRPI0306434 A8 BR PI0306434A8
Authority
BR
Brazil
Prior art keywords
aliasing
high frequency
subband signals
frequency subband
audio decoding
Prior art date
Application number
BRPI0306434A
Other languages
English (en)
Other versions
BRPI0306434B1 (pt
BR0306434A (pt
Inventor
Tanaka Naoya
Shimada Osamu
Tsushima Mineo
Norimatsu Takeshi
Seng Chong Kok
Hann Kuah Kim
Nomura Toshiyuki
Takamizawa Yuichiro
Serizawa Masahiro
Hong Neo Sua
Original Assignee
Nec Corp
Matsushita Electric Ind Co Ltd
Panasonic 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 Nec Corp, Matsushita Electric Ind Co Ltd, Panasonic Corp filed Critical Nec Corp
Publication of BR0306434A publication Critical patent/BR0306434A/pt
Publication of BRPI0306434A8 publication Critical patent/BRPI0306434A8/pt
Publication of BRPI0306434B1 publication Critical patent/BRPI0306434B1/pt

Links

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
    • G10L21/00—Speech or voice signal processing techniques 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 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

"APARELHO E MÉTODO DE DECODIFICAÇÃO DE ÁUDIO". A presente invenção refere-se a um aparelho de decodificação de áudio que decodifica sinais de componente de alta freqüência usando um expansor de banda que gera múltiplos sinais de sub-banda de freqüência alta a partir dos sinais de sub-banda de freqüência baixa divididos em múltiplas sub-bandas e uma informação codificada de freqüência alta transmitida. O aparelho é provido com um detector de serrilhado e um removedor de serrilhado. O detector de serrilhado detecta o grau de ocorrência de componentes de serrilhado nos múltiplos sinais de sub-banda de freqüência alta gerados pelo expansor de banda. O removedor de serrilhado suprime componentes de serrilhado nos sinais de sub-banda de freqüência alta pelo ajuste do ganho usado para a geração dos sinais de sub-banda de freqüência alta. Assim, uma ocorrência de serrilhado pode ser suprimida e a degradação resultante na qualidade do som pode ser reduzida, mesmo quando sinais de sub-banda de valor real forem usados, de modo a se reduzir o número de operações.
BRPI0306434-4A 2002-09-19 2003-09-11 Aparelho e método de decodificação de áudio BRPI0306434B1 (pt)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP2002273557 2002-09-19
JP2002-273557 2002-09-19
JP2002283722 2002-09-27
JP2002-283722 2002-09-27
JP2002-300490 2002-10-15
JP2002300490 2002-10-15
PCT/JP2003/011601 WO2004027368A1 (en) 2002-09-19 2003-09-11 Audio decoding apparatus and method

Publications (3)

Publication Number Publication Date
BR0306434A BR0306434A (pt) 2004-10-26
BRPI0306434A8 true BRPI0306434A8 (pt) 2017-10-10
BRPI0306434B1 BRPI0306434B1 (pt) 2018-06-12

Family

ID=32034073

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0306434-4A BRPI0306434B1 (pt) 2002-09-19 2003-09-11 Aparelho e método de decodificação de áudio

Country Status (14)

Country Link
US (1) US7069212B2 (pt)
EP (1) EP1543307B1 (pt)
JP (1) JP3646939B1 (pt)
KR (1) KR100728428B1 (pt)
CN (1) CN100492492C (pt)
AT (1) ATE318405T1 (pt)
AU (1) AU2003260958A1 (pt)
BR (1) BRPI0306434B1 (pt)
CA (1) CA2469674C (pt)
DE (1) DE60303689T2 (pt)
ES (1) ES2259158T3 (pt)
HK (1) HK1074877A1 (pt)
TW (1) TWI313856B (pt)
WO (1) WO2004027368A1 (pt)

Families Citing this family (123)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7742927B2 (en) * 2000-04-18 2010-06-22 France Telecom Spectral enhancing method and device
DE10121532A1 (de) * 2001-05-03 2002-11-07 Siemens Ag Verfahren und Vorrichtung zur automatischen Differenzierung und/oder Detektion akustischer Signale
SE0202159D0 (sv) 2001-07-10 2002-07-09 Coding Technologies Sweden Ab Efficientand scalable parametric stereo coding for low bitrate applications
US8605911B2 (en) 2001-07-10 2013-12-10 Dolby International Ab Efficient and scalable parametric stereo coding for low bitrate audio coding applications
US7469206B2 (en) 2001-11-29 2008-12-23 Coding Technologies Ab Methods for improving high frequency reconstruction
US7240001B2 (en) * 2001-12-14 2007-07-03 Microsoft Corporation Quality improvement techniques in an audio encoder
US6934677B2 (en) 2001-12-14 2005-08-23 Microsoft Corporation Quantization matrices based on critical band pattern information for digital audio wherein quantization bands differ from critical bands
US7502743B2 (en) 2002-09-04 2009-03-10 Microsoft Corporation Multi-channel audio encoding and decoding with multi-channel transform selection
SE0202770D0 (sv) 2002-09-18 2002-09-18 Coding Technologies Sweden Ab Method for reduction of aliasing introduces by spectral envelope adjustment in real-valued filterbanks
US7460990B2 (en) 2004-01-23 2008-12-02 Microsoft Corporation Efficient coding of digital media spectral data using wide-sense perceptual similarity
JP4741476B2 (ja) * 2004-04-23 2011-08-03 パナソニック株式会社 符号化装置
WO2005111568A1 (ja) * 2004-05-14 2005-11-24 Matsushita Electric Industrial Co., Ltd. 符号化装置、復号化装置、およびこれらの方法
CN101656075B (zh) * 2004-05-14 2012-08-29 松下电器产业株式会社 音频解码装置、音频解码方法以及通信终端和基站装置
CN102280109B (zh) 2004-05-19 2016-04-27 松下电器（美国）知识产权公司 编码装置、解码装置及它们的方法
WO2006048814A1 (en) * 2004-11-02 2006-05-11 Koninklijke Philips Electronics N.V. Encoding and decoding of audio signals using complex-valued filter banks
BRPI0515814A (pt) * 2004-12-10 2008-08-05 Matsushita Electric Ind Co Ltd dispositivo de codificação de banda larga, dispositivo de predição de lsp de banda larga, dispositivo de codificação de banda escalonável, método de codificação de banda larga
US8082156B2 (en) * 2005-01-11 2011-12-20 Nec Corporation Audio encoding device, audio encoding method, and audio encoding program for encoding a wide-band audio signal
EP2107557A3 (en) * 2005-01-14 2010-08-25 Panasonic Corporation Scalable decoding apparatus and method
EP1864281A1 (en) * 2005-04-01 2007-12-12 QUALCOMM Incorporated Systems, methods, and apparatus for highband burst suppression
US7813931B2 (en) * 2005-04-20 2010-10-12 QNX Software Systems, Co. System for improving speech quality and intelligibility with bandwidth compression/expansion
US8249861B2 (en) * 2005-04-20 2012-08-21 Qnx Software Systems Limited High frequency compression integration
US8086451B2 (en) * 2005-04-20 2011-12-27 Qnx Software Systems Co. System for improving speech intelligibility through high frequency compression
PL1875463T3 (pl) * 2005-04-22 2019-03-29 Qualcomm Incorporated Układy, sposoby i urządzenie do wygładzania współczynnika wzmocnienia
JP4899359B2 (ja) 2005-07-11 2012-03-21 ソニー株式会社 信号符号化装置及び方法、信号復号装置及び方法、並びにプログラム及び記録媒体
FR2888699A1 (fr) * 2005-07-13 2007-01-19 France Telecom Dispositif de codage/decodage hierachique
WO2007010785A1 (ja) * 2005-07-15 2007-01-25 Matsushita Electric Industrial Co., Ltd. オーディオデコーダ
US8443026B2 (en) 2005-09-16 2013-05-14 Dolby International Ab Partially complex modulated filter bank
US7917561B2 (en) * 2005-09-16 2011-03-29 Coding Technologies Ab Partially complex modulated filter bank
JP4876574B2 (ja) * 2005-12-26 2012-02-15 ソニー株式会社 信号符号化装置及び方法、信号復号装置及び方法、並びにプログラム及び記録媒体
TWI311856B (en) * 2006-01-04 2009-07-01 Quanta Comp Inc Synthesis subband filtering method and apparatus
WO2007080211A1 (en) * 2006-01-09 2007-07-19 Nokia Corporation Decoding of binaural audio signals
US7953604B2 (en) * 2006-01-20 2011-05-31 Microsoft Corporation Shape and scale parameters for extended-band frequency coding
US8190425B2 (en) * 2006-01-20 2012-05-29 Microsoft Corporation Complex cross-correlation parameters for multi-channel audio
US7831434B2 (en) * 2006-01-20 2010-11-09 Microsoft Corporation Complex-transform channel coding with extended-band frequency coding
WO2007120452A1 (en) * 2006-04-04 2007-10-25 Dolby Laboratories Licensing Corporation Audio signal loudness measurement and modification in the mdct domain
US8378964B2 (en) 2006-04-13 2013-02-19 Immersion Corporation System and method for automatically producing haptic events from a digital audio signal
US8000825B2 (en) * 2006-04-13 2011-08-16 Immersion Corporation System and method for automatically producing haptic events from a digital audio file
US7979146B2 (en) * 2006-04-13 2011-07-12 Immersion Corporation System and method for automatically producing haptic events from a digital audio signal
DE102006047197B3 (de) * 2006-07-31 2008-01-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum Verarbeiten eines reellen Subband-Signals zur Reduktion von Aliasing-Effekten
PT2109098T (pt) * 2006-10-25 2020-12-18 Fraunhofer Ges Forschung Aparelho e método para gerar amostras de áudio de domínio de tempo
WO2008062990A1 (en) 2006-11-21 2008-05-29 Samsung Electronics Co., Ltd. Method, medium, and system scalably encoding/decoding audio/speech
JP4967618B2 (ja) * 2006-11-24 2012-07-04 富士通株式会社 復号化装置および復号化方法
EP2111616B1 (en) 2007-02-14 2011-09-28 LG Electronics Inc. Method and apparatus for encoding an audio signal
US20080208575A1 (en) * 2007-02-27 2008-08-28 Nokia Corporation Split-band encoding and decoding of an audio signal
JP4984983B2 (ja) 2007-03-09 2012-07-25 富士通株式会社 符号化装置および符号化方法
KR101355376B1 (ko) * 2007-04-30 2014-01-23 삼성전자주식회사 고주파수 영역 부호화 및 복호화 방법 및 장치
KR101411900B1 (ko) * 2007-05-08 2014-06-26 삼성전자주식회사 오디오 신호의 부호화 및 복호화 방법 및 장치
US7885819B2 (en) 2007-06-29 2011-02-08 Microsoft Corporation Bitstream syntax for multi-process audio decoding
CN101458930B (zh) * 2007-12-12 2011-09-14 华为技术有限公司 带宽扩展中激励信号的生成及信号重建方法和装置
CN101329870B (zh) * 2008-08-01 2012-12-12 威盛电子股份有限公司 音频解码器以及相关的电子装置以及抑制高频调制噪声的方法
US8352279B2 (en) * 2008-09-06 2013-01-08 Huawei Technologies Co., Ltd. Efficient temporal envelope coding approach by prediction between low band signal and high band signal
JP5423684B2 (ja) * 2008-12-19 2014-02-19 富士通株式会社 音声帯域拡張装置及び音声帯域拡張方法
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
US11657788B2 (en) * 2009-05-27 2023-05-23 Dolby International Ab Efficient combined harmonic transposition
TWI643187B (zh) 2009-05-27 2018-12-01 瑞典商杜比國際公司 從訊號的低頻成份產生該訊號之高頻成份的系統與方法，及其機上盒、電腦程式產品、軟體程式及儲存媒體
AU2015264887B2 (en) * 2009-05-27 2017-12-07 Dolby International Ab Efficient Combined Harmonic Transposition
AU2013263712B2 (en) * 2009-05-27 2015-11-12 Dolby International Ab Efficient Combined Harmonic Transposition
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
US8924220B2 (en) * 2009-10-20 2014-12-30 Lenovo Innovations Limited (Hong Kong) Multiband compressor
EP3998606B8 (en) 2009-10-21 2022-12-07 Dolby International AB Oversampling in a combined transposer filter bank
EP4120263B1 (en) 2010-01-19 2023-08-09 Dolby International AB Improved subband block based harmonic transposition
EP2357649B1 (en) * 2010-01-21 2012-12-19 Electronics and Telecommunications Research Institute Method and apparatus for decoding audio signal
WO2011114192A1 (en) * 2010-03-19 2011-09-22 Nokia Corporation Method and apparatus for audio coding
JP5651980B2 (ja) 2010-03-31 2015-01-14 ソニー株式会社 復号装置、復号方法、およびプログラム
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
CN103069484B (zh) * 2010-04-14 2014-10-08 华为技术有限公司 时/频二维后处理
US12002476B2 (en) 2010-07-19 2024-06-04 Dolby International Ab Processing of audio signals during high frequency reconstruction
BR112012024360B1 (pt) * 2010-07-19 2020-11-03 Dolby International Ab sistema configurado para gerar uma pluralidade de sinais de áudio de sub-banda de alta frequência, decodificador de áudio, codificador, método para gerar uma pluralidade de sinais de sub-banda de alta frequência, método para decodificar um fluxo de bits, método para gerar dados de controle a partir de um sinal de áudio e meio de armazenamento
US20120029926A1 (en) 2010-07-30 2012-02-02 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for dependent-mode coding of audio signals
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
JP5665987B2 (ja) 2010-08-12 2015-02-04 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 Ｑｍｆベースのオーディオコーデックの出力信号のリサンプリング
US9208792B2 (en) 2010-08-17 2015-12-08 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for noise injection
ES2938725T3 (es) 2010-09-16 2023-04-14 Dolby Int Ab Transposición armónica basada en bloque de subbanda mejorado de producto cruzado
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
FR2969804A1 (fr) 2010-12-23 2012-06-29 France Telecom Filtrage perfectionne dans le domaine transforme.
JP5743137B2 (ja) * 2011-01-14 2015-07-01 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
EP2676268B1 (en) 2011-02-14 2014-12-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for processing a decoded audio signal in a spectral domain
MY165853A (en) * 2011-02-14 2018-05-18 Fraunhofer Ges Forschung Linear prediction based coding scheme using spectral domain noise shaping
EP3503098B1 (en) 2011-02-14 2023-08-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method decoding an audio signal using an aligned look-ahead portion
TWI483245B (zh) 2011-02-14 2015-05-01 Fraunhofer Ges Forschung 利用重疊變換之資訊信號表示技術
AU2012217215B2 (en) 2011-02-14 2015-05-14 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for error concealment in low-delay unified speech and audio coding (USAC)
EP2676270B1 (en) 2011-02-14 2017-02-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Coding a portion of an audio signal using a transient detection and a quality result
RU2586838C2 (ru) 2011-02-14 2016-06-10 Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф. Аудиокодек, использующий синтез шума в течение неактивной фазы
TWI488176B (zh) 2011-02-14 2015-06-11 Fraunhofer Ges Forschung 音訊信號音軌脈衝位置之編碼與解碼技術
GB2491173A (en) * 2011-05-26 2012-11-28 Skype Setting gain applied to an audio signal based on direction of arrival (DOA) information
GB2493327B (en) 2011-07-05 2018-06-06 Skype Processing audio signals
US9210506B1 (en) * 2011-09-12 2015-12-08 Audyssey Laboratories, Inc. FFT bin based signal limiting
GB2495129B (en) 2011-09-30 2017-07-19 Skype Processing signals
GB2495128B (en) 2011-09-30 2018-04-04 Skype Processing signals
GB2495472B (en) 2011-09-30 2019-07-03 Skype Processing audio signals
GB2495131A (en) 2011-09-30 2013-04-03 Skype A mobile device includes a received-signal beamformer that adapts to motion of the mobile device
GB2495130B (en) 2011-09-30 2018-10-24 Skype Processing audio signals
GB2495278A (en) 2011-09-30 2013-04-10 Skype Processing received signals from a range of receiving angles to reduce interference
GB2496660B (en) 2011-11-18 2014-06-04 Skype Processing audio signals
GB201120392D0 (en) 2011-11-25 2012-01-11 Skype Ltd Processing signals
GB2497343B (en) 2011-12-08 2014-11-26 Skype Processing audio signals
PL2831875T3 (pl) * 2012-03-29 2016-05-31 Ericsson Telefon Ab L M Rozszerzenie pasma harmonicznego sygnału audio
JP5997592B2 (ja) 2012-04-27 2016-09-28 株式会社Ｎｔｔドコモ 音声復号装置
KR101920029B1 (ko) * 2012-08-03 2018-11-19 삼성전자주식회사 모바일 장치 및 제어방법
JP2014074782A (ja) * 2012-10-03 2014-04-24 Sony Corp 音声送信装置、音声送信方法、音声受信装置および音声受信方法
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
FR3007563A1 (fr) * 2013-06-25 2014-12-26 France Telecom Extension amelioree de bande de frequence dans un decodeur de signaux audiofrequences
CN104301064B (zh) 2013-07-16 2018-05-04 华为技术有限公司 处理丢失帧的方法和解码器
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
CN104517610B (zh) * 2013-09-26 2018-03-06 华为技术有限公司 频带扩展的方法及装置
CA3162763A1 (en) 2013-12-27 2015-07-02 Sony Corporation Decoding apparatus and method, and program
EP3155617B1 (en) * 2014-06-10 2022-01-05 MQA Limited Digital encapsulation of audio signals
CN106683681B (zh) 2014-06-25 2020-09-25 华为技术有限公司 处理丢失帧的方法和装置
KR101641418B1 (ko) * 2014-07-25 2016-07-20 포항공과대학교 산학협력단 청각 주목도에 기반한 햅틱 신호 생성 방법 및 이를 위한 장치
CN104269173B (zh) * 2014-09-30 2018-03-13 武汉大学深圳研究院 切换模式的音频带宽扩展装置与方法
EP3067889A1 (en) 2015-03-09 2016-09-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and apparatus for signal-adaptive transform kernel switching in audio coding
US10049684B2 (en) * 2015-04-05 2018-08-14 Qualcomm Incorporated Audio bandwidth selection
TR201908841T4 (tr) * 2015-09-22 2019-07-22 Koninklijke Philips Nv Ses sinyali işleme.
JP6210338B2 (ja) * 2015-12-28 2017-10-11 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
CN116343804A (zh) 2016-12-16 2023-06-27 瑞典爱立信有限公司 用于处理包络表示系数的方法、编码器和解码器
JP6769299B2 (ja) * 2016-12-27 2020-10-14 富士通株式会社 オーディオ符号化装置およびオーディオ符号化方法
US11540279B2 (en) * 2019-07-12 2022-12-27 Meteorcomm, Llc Wide band sensing of transmissions in FDM signals containing multi-width channels
US11916668B2 (en) 2020-12-08 2024-02-27 Meteorcomm, Llc Soft decision differential demodulator for radios in wireless networks supporting train control
CA3143425A1 (en) 2020-12-19 2022-06-19 Meteorcomm Llc End of train to head of train communication over a train control network
CN113299313B (zh) * 2021-01-28 2024-03-26 维沃移动通信有限公司 音频处理方法、装置及电子设备
CN113539277B (zh) * 2021-09-17 2022-01-18 北京百瑞互联技术有限公司 一种保护听力的蓝牙音频解码方法、装置、介质及设备
CN114189410B (zh) * 2021-12-13 2024-05-17 深圳市日声数码科技有限公司 一种车载数码广播音频接收系统

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691292A (en) * 1983-04-13 1987-09-01 Rca Corporation System for digital multiband filtering
DE3510573A1 (de) * 1985-03-23 1986-09-25 Philips Patentverwaltung Digitale analyse-synthese-filterbank mit maximaler taktreduktion
JP2906646B2 (ja) * 1990-11-09 1999-06-21 松下電器産業株式会社 音声帯域分割符号化装置
JPH04206035A (ja) * 1990-11-30 1992-07-28 Kogaku Denshi Kk Ｃｄ―ｒｏｍおよびｃｄ―ｒｏｍの再生システム
FR2680924B1 (fr) * 1991-09-03 1997-06-06 France Telecom Procede de filtrage adapte d'un signal transforme en sous-bandes, et dispositif de filtrage correspondant.
US5508949A (en) 1993-12-29 1996-04-16 Hewlett-Packard Company Fast subband filtering in digital signal coding
US5654952A (en) * 1994-10-28 1997-08-05 Sony Corporation Digital signal encoding method and apparatus and recording medium
JPH08162964A (ja) 1994-12-08 1996-06-21 Sony Corp 情報圧縮装置及び方法、情報伸張装置及び方法、並びに記録媒体
DE69619284T3 (de) * 1995-03-13 2006-04-27 Matsushita Electric Industrial Co., Ltd., Kadoma Vorrichtung zur Erweiterung der Sprachbandbreite
JP2956548B2 (ja) 1995-10-05 1999-10-04 松下電器産業株式会社 音声帯域拡大装置
SE512719C2 (sv) 1997-06-10 2000-05-02 Lars Gustaf Liljeryd En metod och anordning för reduktion av dataflöde baserad på harmonisk bandbreddsexpansion
JP3437421B2 (ja) 1997-09-30 2003-08-18 シャープ株式会社 楽音符号化装置及び楽音符号化方法並びに楽音符号化プログラムを記録した記録媒体
EP0957579A1 (en) * 1998-05-15 1999-11-17 Deutsche Thomson-Brandt Gmbh Method and apparatus for sampling-rate conversion of audio signals
EP0957580B1 (en) 1998-05-15 2008-04-02 Thomson Method and apparatus for sampling-rate conversion of audio signals
US6539355B1 (en) * 1998-10-15 2003-03-25 Sony Corporation Signal band expanding method and apparatus and signal synthesis method and apparatus
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)
US6718300B1 (en) 2000-06-02 2004-04-06 Agere Systems Inc. Method and apparatus for reducing aliasing in cascaded filter banks
SE0004163D0 (sv) * 2000-11-14 2000-11-14 Coding Technologies Sweden Ab Enhancing perceptual performance of high frequency reconstruction coding methods by adaptive filtering
US6895375B2 (en) * 2001-10-04 2005-05-17 At&T Corp. System for bandwidth extension of Narrow-band speech

Also Published As

Publication number Publication date
EP1543307B1 (en) 2006-02-22
CN100492492C (zh) 2009-05-27
CN1606687A (zh) 2005-04-13
DE60303689T2 (de) 2006-10-19
WO2004027368A1 (en) 2004-04-01
CA2469674C (en) 2012-04-24
AU2003260958A1 (en) 2004-04-08
BRPI0306434B1 (pt) 2018-06-12
US20050149339A1 (en) 2005-07-07
ATE318405T1 (de) 2006-03-15
DE60303689D1 (de) 2006-04-27
BR0306434A (pt) 2004-10-26
CA2469674A1 (en) 2004-04-01
TW200407846A (en) 2004-05-16
JP3646939B1 (ja) 2005-05-11
KR20050042075A (ko) 2005-05-04
EP1543307A1 (en) 2005-06-22
HK1074877A1 (en) 2005-11-25
JP2005520219A (ja) 2005-07-07
US7069212B2 (en) 2006-06-27
AU2003260958A8 (en) 2004-04-08
ES2259158T3 (es) 2006-09-16
KR100728428B1 (ko) 2007-06-13
TWI313856B (en) 2009-08-21

Similar Documents

Publication Publication Date Title
BRPI0306434A8 (pt) Aparelho e método de decodificação de áudio
US11423923B2 (en) Companding system and method to reduce quantization noise using advanced spectral extension
US10186276B2 (en) Adaptive noise suppression for super wideband music
US10861475B2 (en) Signal-dependent companding system and method to reduce quantization noise
EP1742202A4 (en) ENCODING DEVICE, DECODING DEVICE, AND METHOD FOR THE SAME
AU2003252727A1 (en) Audio decoding apparatus and audio decoding method based on spectral band repliction
WO2003042979A3 (en) Encoding device and decoding device
MY136521A (en) Audio coding system using characteristics of a decoded signal to adapt synthesized spectral components
KR100519260B1 (ko) 고속 최적화된 무선마이크 장치 및 그 제어방법
JP2011059714A (ja) 信号符号化装置及び方法、信号復号装置及び方法、並びにプログラム及び記録媒体
US9704497B2 (en) Method and system of audio power reduction and thermal mitigation using psychoacoustic techniques
JP4973397B2 (ja) 符号化装置および符号化方法、ならびに復号化装置および復号化方法
US11830507B2 (en) Coding dense transient events with companding
CN109360574B (zh) 一种无线蓝牙系统改进的高级音频编码/解码方法及系统
JP5569476B2 (ja) 信号符号化装置及び方法、信号復号装置及び方法、並びにプログラム及び記録媒体
Venkateswaralu et al. Audio compression using Munich and Cambridge filters for audio coding with Morlet wavelet
Higgins Digital compression
WO2009038158A1 (ja) 音声復号装置、音声復号方法、プログラム及び携帯端末
TH99285B (th) เครื่องมือ วิธีการและโปรแกรมสำหรับการถอดรหัสเสียงและเครื่องปลายทางเคลื่อนที่

Legal Events

Date Code Title Description
B25D Requested change of name of applicant approved

Owner name: NEC CORPORATION (JP) , PANASONIC CORPORATION (JP)

Free format text: NOME ALTERADO DE: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

B15K Others concerning applications: alteration of classification

Ipc: G10L 19/02 (2000.01), G10L 21/038 (2013.01)

B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]