MX2011007807A - Modo de extension de ancho de banda y aparato para un codificador de audio de transformada de coseno discreta modificada. - Google Patents

Modo de extension de ancho de banda y aparato para un codificador de audio de transformada de coseno discreta modificada.

Info

Publication number
MX2011007807A
MX2011007807A MX2011007807A MX2011007807A MX2011007807A MX 2011007807 A MX2011007807 A MX 2011007807A MX 2011007807 A MX2011007807 A MX 2011007807A MX 2011007807 A MX2011007807 A MX 2011007807A MX 2011007807 A MX2011007807 A MX 2011007807A
Authority
MX
Mexico
Prior art keywords
frequency band
band
transition
discrete cosine
cosine transform
Prior art date
Application number
MX2011007807A
Other languages
English (en)
Inventor
Tenkasi Ramabadran
Mark Jasiuk
Original Assignee
Motorola Mobility Inc
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 Motorola Mobility Inc filed Critical Motorola Mobility Inc
Publication of MX2011007807A publication Critical patent/MX2011007807A/es

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
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • 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
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Telephone Function (AREA)

Abstract

Un método incluye definir una banda de transición para una señal que tiene un espectro en una primera banda de frecuencias, donde la banda de transición se define como una porción de la primera banda de frecuencias, y se encuentra ubicada cerca de una banda de frecuencias adyacente que está adyacente a la primera banda de frecuencias. El método analiza la banda de transición para obtener una envolvente espectral de la banda de transición y un espectro de excitación de la banda de transición; calcula una envolvente espectral de la banda de frecuencias adyacente; genera un espectro de excitación de la banda de frecuencias adyacente por la repetición periódica de al menos una parte del espectro de excitación de la banda de transición con un período de repetición determinado por una frecuencia de tono de la señal; y combina la envolvente espectral de la banda de frecuencias adyacente y el espectro de excitación de la banda de frecuencias adyacente para obtener un espectro de señal de la banda de frecuencias adyacente. También se describe una lógica de procesamiento de señales para ejecutar el método.
MX2011007807A 2009-02-04 2010-02-02 Modo de extension de ancho de banda y aparato para un codificador de audio de transformada de coseno discreta modificada. MX2011007807A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/365,457 US8463599B2 (en) 2009-02-04 2009-02-04 Bandwidth extension method and apparatus for a modified discrete cosine transform audio coder
PCT/US2010/022879 WO2010091013A1 (en) 2009-02-04 2010-02-02 Bandwidth extension method and apparatus for a modified discrete cosine transform audio coder

Publications (1)

Publication Number Publication Date
MX2011007807A true MX2011007807A (es) 2011-09-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
MX2011007807A MX2011007807A (es) 2009-02-04 2010-02-02 Modo de extension de ancho de banda y aparato para un codificador de audio de transformada de coseno discreta modificada.

Country Status (8)

Country Link
US (1) US8463599B2 (es)
EP (1) EP2394269B1 (es)
JP (2) JP5597896B2 (es)
KR (1) KR101341246B1 (es)
CN (1) CN102308333B (es)
BR (1) BRPI1008520B1 (es)
MX (1) MX2011007807A (es)
WO (1) WO2010091013A1 (es)

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1569200A1 (en) * 2004-02-26 2005-08-31 Sony International (Europe) GmbH Identification of the presence of speech in digital audio data
US8688441B2 (en) * 2007-11-29 2014-04-01 Motorola Mobility Llc Method and apparatus to facilitate provision and use of an energy value to determine a spectral envelope shape for out-of-signal bandwidth content
US8433582B2 (en) * 2008-02-01 2013-04-30 Motorola Mobility Llc Method and apparatus for estimating high-band energy in a bandwidth extension system
US20090201983A1 (en) * 2008-02-07 2009-08-13 Motorola, Inc. Method and apparatus for estimating high-band energy in a bandwidth extension system
US8463412B2 (en) * 2008-08-21 2013-06-11 Motorola Mobility Llc Method and apparatus to facilitate determining signal bounding frequencies
US9947340B2 (en) 2008-12-10 2018-04-17 Skype Regeneration of wideband speech
EP2360687A4 (en) * 2008-12-19 2012-07-11 Fujitsu Ltd VOICE BAND EXTENSION DEVICE AND VOICE BAND EXTENSION METHOD
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
WO2011045926A1 (ja) * 2009-10-14 2011-04-21 パナソニック株式会社 符号化装置、復号装置およびこれらの方法
CN102822890A (zh) * 2010-03-30 2012-12-12 松下电器产业株式会社 音响装置
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
US9047875B2 (en) * 2010-07-19 2015-06-02 Futurewei Technologies, Inc. Spectrum flatness control for bandwidth extension
JP2012032713A (ja) * 2010-08-02 2012-02-16 Sony Corp 復号装置、復号方法、およびプログラム
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
WO2012037515A1 (en) 2010-09-17 2012-03-22 Xiph. Org. Methods and systems for adaptive time-frequency resolution in digital data coding
JP5552988B2 (ja) * 2010-09-27 2014-07-16 富士通株式会社 音声帯域拡張装置および音声帯域拡張方法
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
US9589568B2 (en) 2011-02-08 2017-03-07 Lg Electronics Inc. Method and device for bandwidth extension
WO2012122299A1 (en) 2011-03-07 2012-09-13 Xiph. Org. Bit allocation and partitioning in gain-shape vector quantization for audio coding
WO2012122297A1 (en) * 2011-03-07 2012-09-13 Xiph. Org. Methods and systems for avoiding partial collapse in multi-block audio coding
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
EP2707875A4 (en) 2011-05-13 2015-03-25 Samsung Electronics Co Ltd NOISE REDUCTION AND AUDIO CODING
PL2791937T3 (pl) * 2011-11-02 2016-11-30 Wytworzenie rozszerzenia pasma wysokiego sygnału dźwiękowego o poszerzonym paśmie
HUE028238T2 (en) * 2012-03-29 2016-12-28 ERICSSON TELEFON AB L M (publ) Extend the bandwidth of a harmonic audio signal
CN105976830B (zh) * 2013-01-11 2019-09-20 华为技术有限公司 音频信号编码和解码方法、音频信号编码和解码装置
CN106847297B (zh) * 2013-01-29 2020-07-07 华为技术有限公司 高频带信号的预测方法、编/解码设备
US9601125B2 (en) 2013-02-08 2017-03-21 Qualcomm Incorporated Systems and methods of performing noise modulation and gain adjustment
JP6157926B2 (ja) * 2013-05-24 2017-07-05 株式会社東芝 音声処理装置、方法およびプログラム
CN104217727B (zh) * 2013-05-31 2017-07-21 华为技术有限公司 信号解码方法及设备
FR3007563A1 (fr) * 2013-06-25 2014-12-26 France Telecom Extension amelioree de bande de frequence dans un decodeur de signaux audiofrequences
FR3008533A1 (fr) 2013-07-12 2015-01-16 Orange Facteur d'echelle optimise pour l'extension 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
CN104517611B (zh) 2013-09-26 2016-05-25 华为技术有限公司 一种高频激励信号预测方法及装置
US10083708B2 (en) * 2013-10-11 2018-09-25 Qualcomm Incorporated Estimation of mixing factors to generate high-band excitation signal
KR101498113B1 (ko) * 2013-10-23 2015-03-04 광주과학기술원 사운드 신호의 대역폭 확장 장치 및 방법
CA2934602C (en) 2013-12-27 2022-08-30 Sony Corporation Decoding apparatus and method, and program
FR3017484A1 (fr) 2014-02-07 2015-08-14 Orange Extension amelioree de bande de frequence dans un decodeur de signaux audiofrequences
PL3117432T3 (pl) * 2014-03-14 2019-10-31 Ericsson Telefon Ab L M Sposób i aparatura do kodowania audio
CN112820305B (zh) * 2014-05-01 2023-12-15 日本电信电话株式会社 编码装置、编码方法、编码程序、记录介质
PL3139381T3 (pl) * 2014-05-01 2019-10-31 Nippon Telegraph & Telephone Urządzenie generujące sekwencję okresowej połączonej obwiedni, sposób generowania sekwencji okresowej połączonej obwiedni, program do generowania sekwencji okresowej połączonej obwiedni i nośnik rejestrujący
JP2016038435A (ja) * 2014-08-06 2016-03-22 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
US9536537B2 (en) 2015-02-27 2017-01-03 Qualcomm Incorporated Systems and methods for speech restoration
US10847170B2 (en) 2015-06-18 2020-11-24 Qualcomm Incorporated Device and method for generating a high-band signal from non-linearly processed sub-ranges
US9837089B2 (en) * 2015-06-18 2017-12-05 Qualcomm Incorporated High-band signal generation
KR20180056032A (ko) 2016-11-18 2018-05-28 삼성전자주식회사 신호 처리 프로세서 및 신호 처리 프로세서의 제어 방법
US20190051286A1 (en) * 2017-08-14 2019-02-14 Microsoft Technology Licensing, Llc Normalization of high band signals in network telephony communications
US11100941B2 (en) * 2018-08-21 2021-08-24 Krisp Technologies, Inc. Speech enhancement and noise suppression systems and methods
CN112180762B (zh) * 2020-09-29 2021-10-29 瑞声新能源发展(常州)有限公司科教城分公司 非线性信号系统构建方法、装置、设备和介质

Family Cites Families (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4771465A (en) * 1986-09-11 1988-09-13 American Telephone And Telegraph Company, At&T Bell Laboratories Digital speech sinusoidal vocoder with transmission of only subset of harmonics
JPH02166198A (ja) 1988-12-20 1990-06-26 Asahi Glass Co Ltd ドライクリーニング用洗浄剤
US5765127A (en) * 1992-03-18 1998-06-09 Sony Corp High efficiency encoding method
US5245589A (en) * 1992-03-20 1993-09-14 Abel Jonathan S Method and apparatus for processing signals to extract narrow bandwidth features
JP2779886B2 (ja) * 1992-10-05 1998-07-23 日本電信電話株式会社 広帯域音声信号復元方法
US5455888A (en) * 1992-12-04 1995-10-03 Northern Telecom Limited Speech bandwidth extension method and apparatus
JPH07160299A (ja) * 1993-12-06 1995-06-23 Hitachi Denshi Ltd 音声信号帯域圧縮伸張装置並びに音声信号の帯域圧縮伝送方式及び再生方式
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
DE69619284T3 (de) * 1995-03-13 2006-04-27 Matsushita Electric Industrial Co., Ltd., Kadoma Vorrichtung zur Erweiterung der Sprachbandbreite
JPH0916198A (ja) * 1995-06-27 1997-01-17 Japan Radio Co Ltd 低ビットレートボコーダにおける励起信号発生装置及び励起信号発生方法
JP3522954B2 (ja) * 1996-03-15 2004-04-26 株式会社東芝 マイクロホンアレイ入力型音声認識装置及び方法
US5794185A (en) * 1996-06-14 1998-08-11 Motorola, Inc. Method and apparatus for speech coding using ensemble statistics
US5949878A (en) * 1996-06-28 1999-09-07 Transcrypt International, Inc. Method and apparatus for providing voice privacy in electronic communication systems
JPH10124088A (ja) * 1996-10-24 1998-05-15 Sony Corp 音声帯域幅拡張装置及び方法
SE512719C2 (sv) 1997-06-10 2000-05-02 Lars Gustaf Liljeryd En metod och anordning för reduktion av dataflöde baserad på harmonisk bandbreddsexpansion
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)
US6453287B1 (en) * 1999-02-04 2002-09-17 Georgia-Tech Research Corporation Apparatus and quality enhancement algorithm for mixed excitation linear predictive (MELP) and other speech coders
JP2000305599A (ja) * 1999-04-22 2000-11-02 Sony Corp 音声合成装置及び方法、電話装置並びにプログラム提供媒体
US7330814B2 (en) * 2000-05-22 2008-02-12 Texas Instruments Incorporated Wideband speech coding with modulated noise highband excitation system and method
SE0001926D0 (sv) * 2000-05-23 2000-05-23 Lars Liljeryd Improved spectral translation/folding in the subband domain
DE10041512B4 (de) * 2000-08-24 2005-05-04 Infineon Technologies Ag Verfahren und Vorrichtung zur künstlichen Erweiterung der Bandbreite von Sprachsignalen
WO2002029782A1 (en) * 2000-10-02 2002-04-11 The Regents Of The University Of California Perceptual harmonic cepstral coefficients as the front-end for speech recognition
US6990446B1 (en) * 2000-10-10 2006-01-24 Microsoft Corporation Method and apparatus using spectral addition for speaker recognition
US6889182B2 (en) * 2001-01-12 2005-05-03 Telefonaktiebolaget L M Ericsson (Publ) Speech bandwidth extension
CN1327409C (zh) * 2001-01-19 2007-07-18 皇家菲利浦电子有限公司 提供信号重建的宽带音频信号发送机、接收机、系统和方法
SE522553C2 (sv) * 2001-04-23 2004-02-17 Ericsson Telefon Ab L M Bandbreddsutsträckning av akustiska signaler
US6895375B2 (en) * 2001-10-04 2005-05-17 At&T Corp. System for bandwidth extension of Narrow-band speech
US6988066B2 (en) * 2001-10-04 2006-01-17 At&T Corp. Method of bandwidth extension for narrow-band speech
US20030187663A1 (en) * 2002-03-28 2003-10-02 Truman Michael Mead Broadband frequency translation for high frequency regeneration
BRPI0311601B8 (pt) 2002-07-19 2018-02-14 Matsushita Electric Ind Co Ltd "aparelho e método decodificador de áudio"
JP3861770B2 (ja) * 2002-08-21 2006-12-20 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
KR100917464B1 (ko) * 2003-03-07 2009-09-14 삼성전자주식회사 대역 확장 기법을 이용한 디지털 데이터의 부호화 방법,그 장치, 복호화 방법 및 그 장치
US20050004793A1 (en) * 2003-07-03 2005-01-06 Pasi Ojala Signal adaptation for higher band coding in a codec utilizing band split coding
US20050065784A1 (en) * 2003-07-31 2005-03-24 Mcaulay Robert J. Modification of acoustic signals using sinusoidal analysis and synthesis
DE102004041705A1 (de) * 2003-09-03 2005-03-31 Phoenix Ag Einrichtung zur Überwachung einer Förderanlage
US7461003B1 (en) * 2003-10-22 2008-12-02 Tellabs Operations, Inc. Methods and apparatus for improving the quality of speech signals
JP2005136647A (ja) * 2003-10-30 2005-05-26 New Japan Radio Co Ltd 低音ブースト回路
KR100587953B1 (ko) * 2003-12-26 2006-06-08 한국전자통신연구원 대역-분할 광대역 음성 코덱에서의 고대역 오류 은닉 장치 및 그를 이용한 비트스트림 복호화 시스템
CA2454296A1 (en) * 2003-12-29 2005-06-29 Nokia Corporation Method and device for speech enhancement in the presence of background noise
US7460990B2 (en) * 2004-01-23 2008-12-02 Microsoft Corporation Efficient coding of digital media spectral data using wide-sense perceptual similarity
DE602004020765D1 (de) * 2004-09-17 2009-06-04 Harman Becker Automotive Sys Bandbreitenerweiterung von bandbegrenzten Tonsignalen
KR100708121B1 (ko) 2005-01-22 2007-04-16 삼성전자주식회사 음성 신호의 대역 확장 방법 및 장치
DE602006012637D1 (de) * 2005-04-01 2010-04-15 Qualcomm Inc Vorrichtung und Verfahren für die Teilband-Sprachkodierung
US20060224381A1 (en) * 2005-04-04 2006-10-05 Nokia Corporation Detecting speech frames belonging to a low energy sequence
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
TR201821299T4 (tr) * 2005-04-22 2019-01-21 Qualcomm Inc Kazanç faktörü yumuşatma için sistemler, yöntemler ve aparat.
US8311840B2 (en) * 2005-06-28 2012-11-13 Qnx Software Systems Limited Frequency extension of harmonic signals
KR101171098B1 (ko) * 2005-07-22 2012-08-20 삼성전자주식회사 혼합 구조의 스케일러블 음성 부호화 방법 및 장치
US7953605B2 (en) * 2005-10-07 2011-05-31 Deepen Sinha Method and apparatus for audio encoding and decoding using wideband psychoacoustic modeling and bandwidth extension
EP1772855B1 (en) * 2005-10-07 2013-09-18 Nuance Communications, Inc. Method for extending the spectral bandwidth of a speech signal
US7490036B2 (en) * 2005-10-20 2009-02-10 Motorola, Inc. Adaptive equalizer for a coded speech signal
US20070109977A1 (en) * 2005-11-14 2007-05-17 Udar Mittal Method and apparatus for improving listener differentiation of talkers during a conference call
US7546237B2 (en) * 2005-12-23 2009-06-09 Qnx Software Systems (Wavemakers), Inc. Bandwidth extension of narrowband speech
US7835904B2 (en) * 2006-03-03 2010-11-16 Microsoft Corp. Perceptual, scalable audio compression
US7844453B2 (en) * 2006-05-12 2010-11-30 Qnx Software Systems Co. Robust noise estimation
US20080004866A1 (en) * 2006-06-30 2008-01-03 Nokia Corporation Artificial Bandwidth Expansion Method For A Multichannel Signal
US8260609B2 (en) * 2006-07-31 2012-09-04 Qualcomm Incorporated Systems, methods, and apparatus for wideband encoding and decoding of inactive frames
ATE446572T1 (de) 2006-08-22 2009-11-15 Harman Becker Automotive Sys Verfahren und system zur bereitstellung eines tonsignals mit erweiterter bandbreite
US8639500B2 (en) * 2006-11-17 2014-01-28 Samsung Electronics Co., Ltd. Method, medium, and apparatus with bandwidth extension encoding and/or decoding
US8229106B2 (en) * 2007-01-22 2012-07-24 D.S.P. Group, Ltd. Apparatus and methods for enhancement of speech
US8688441B2 (en) * 2007-11-29 2014-04-01 Motorola Mobility Llc Method and apparatus to facilitate provision and use of an energy value to determine a spectral envelope shape for out-of-signal bandwidth content
US8433582B2 (en) 2008-02-01 2013-04-30 Motorola Mobility Llc Method and apparatus for estimating high-band energy in a bandwidth extension system
US20090201983A1 (en) * 2008-02-07 2009-08-13 Motorola, Inc. Method and apparatus for estimating high-band energy in a bandwidth extension system
US8463412B2 (en) * 2008-08-21 2013-06-11 Motorola Mobility Llc Method and apparatus to facilitate determining signal bounding frequencies

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CN102308333A (zh) 2012-01-04
KR20110111463A (ko) 2011-10-11
EP2394269B1 (en) 2017-04-05
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CN102308333B (zh) 2014-03-19
WO2010091013A1 (en) 2010-08-12
KR101341246B1 (ko) 2013-12-12
JP2012514763A (ja) 2012-06-28
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