NO20075773L - Audiocodes etterfilter - Google Patents

Audiocodes etterfilter

Info

Publication number
NO20075773L
NO20075773L NO20075773A NO20075773A NO20075773L NO 20075773 L NO20075773 L NO 20075773L NO 20075773 A NO20075773 A NO 20075773A NO 20075773 A NO20075773 A NO 20075773A NO 20075773 L NO20075773 L NO 20075773L
Authority
NO
Norway
Prior art keywords
reconstructed audio
filter
filter coefficients
another example
reconstructed
Prior art date
Application number
NO20075773A
Other languages
English (en)
Other versions
NO340411B1 (no
Inventor
Xiaoqin Sun
Tian Wang
Hosam A Khalil
Kazuhito Koishida
Wei-Ge Chen
Original Assignee
Microsoft 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 Microsoft Corp filed Critical Microsoft Corp
Publication of NO20075773L publication Critical patent/NO20075773L/no
Publication of NO340411B1 publication Critical patent/NO340411B1/no

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
    • 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
    • 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
    • G10L19/26—Pre-filtering or post-filtering
    • 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

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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Stereophonic System (AREA)

Abstract

Det beskrives teknikker og verktøy for prosessering av rekonstruerte audiosignaler. For eksempel filtreres et rekonstruert audiosignal i tidsdomenen ved bruk av filterkoeffisienter som beregnes, i det minste delvis, i frekvensdomenen. Som et annet eksempel, produsering av et sett av filterkoeffisienter for filtrering av et rekonstruert audiosignal inkluderer klipping av en eller flere topper av et sett av koeffisientverdier. Som enda et annet eksempel, for en subbåndkodek, i et frekvensområde nær en skjæring mellom to subbånd, forbedres et rekonstruert komposittsignal.
NO20075773A 2005-05-31 2007-11-12 Audiokoding etterfilter NO340411B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/142,603 US7707034B2 (en) 2005-05-31 2005-05-31 Audio codec post-filter
PCT/US2006/012641 WO2006130226A2 (en) 2005-05-31 2006-04-05 Audio codec post-filter

Publications (2)

Publication Number Publication Date
NO20075773L true NO20075773L (no) 2008-02-28
NO340411B1 NO340411B1 (no) 2017-04-18

Family

ID=37464575

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20075773A NO340411B1 (no) 2005-05-31 2007-11-12 Audiokoding etterfilter

Country Status (15)

Country Link
US (1) US7707034B2 (no)
EP (1) EP1899962B1 (no)
JP (2) JP5165559B2 (no)
KR (2) KR101344174B1 (no)
CN (1) CN101501763B (no)
AU (1) AU2006252962B2 (no)
CA (1) CA2609539C (no)
EG (1) EG26313A (no)
ES (1) ES2644730T3 (no)
IL (1) IL187167A0 (no)
MX (1) MX2007014555A (no)
NO (1) NO340411B1 (no)
NZ (1) NZ563461A (no)
WO (1) WO2006130226A2 (no)
ZA (1) ZA200710201B (no)

Families Citing this family (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7315815B1 (en) 1999-09-22 2008-01-01 Microsoft Corporation LPC-harmonic vocoder with superframe structure
US7668712B2 (en) * 2004-03-31 2010-02-23 Microsoft Corporation Audio encoding and decoding with intra frames and adaptive forward error correction
US7177804B2 (en) 2005-05-31 2007-02-13 Microsoft Corporation Sub-band voice codec with multi-stage codebooks and redundant coding
US7707034B2 (en) * 2005-05-31 2010-04-27 Microsoft Corporation Audio codec post-filter
US7831421B2 (en) * 2005-05-31 2010-11-09 Microsoft Corporation Robust decoder
KR100900438B1 (ko) * 2006-04-25 2009-06-01 삼성전자주식회사 음성 패킷 복구 장치 및 방법
KR101040160B1 (ko) * 2006-08-15 2011-06-09 브로드콤 코포레이션 패킷 손실 후의 제한되고 제어된 디코딩
US8311814B2 (en) * 2006-09-19 2012-11-13 Avaya Inc. Efficient voice activity detector to detect fixed power signals
EP1918910B1 (en) * 2006-10-31 2009-03-11 Harman Becker Automotive Systems GmbH Model-based enhancement of speech signals
US8000961B2 (en) * 2006-12-26 2011-08-16 Yang Gao Gain quantization system for speech coding to improve packet loss concealment
US8688437B2 (en) 2006-12-26 2014-04-01 Huawei Technologies Co., Ltd. Packet loss concealment for speech coding
EP2132732B1 (en) * 2007-03-02 2012-03-07 Telefonaktiebolaget LM Ericsson (publ) Postfilter for layered codecs
CN101542593B (zh) * 2007-03-12 2013-04-17 富士通株式会社 语音波形内插装置及方法
CN101325537B (zh) * 2007-06-15 2012-04-04 华为技术有限公司 一种丢帧隐藏的方法和设备
RU2470385C2 (ru) * 2008-03-05 2012-12-20 Войсэйдж Корпорейшн Система и способ улучшения декодированного тонального звукового сигнала
US9373339B2 (en) * 2008-05-12 2016-06-21 Broadcom Corporation Speech intelligibility enhancement system and method
US9197181B2 (en) * 2008-05-12 2015-11-24 Broadcom Corporation Loudness enhancement system and method
JP4735711B2 (ja) * 2008-12-17 2011-07-27 ソニー株式会社 情報符号化装置
USRE48462E1 (en) * 2009-07-29 2021-03-09 Northwestern University Systems, methods, and apparatus for equalization preference learning
US9324337B2 (en) * 2009-11-17 2016-04-26 Dolby Laboratories Licensing Corporation Method and system for dialog enhancement
US8832281B2 (en) * 2010-01-08 2014-09-09 Tangome, Inc. Utilizing resources of a peer-to-peer computer environment
US8560633B2 (en) * 2010-01-11 2013-10-15 Tangome, Inc. Communicating in a peer-to-peer computer environment
US9094527B2 (en) * 2010-01-11 2015-07-28 Tangome, Inc. Seamlessly transferring a communication
JP4709928B1 (ja) * 2010-01-21 2011-06-29 株式会社東芝 音質補正装置及び音質補正方法
WO2011142709A2 (en) * 2010-05-11 2011-11-17 Telefonaktiebolaget Lm Ericsson (Publ) Method and arrangement for processing of audio signals
CN105261371B (zh) * 2010-07-02 2019-12-03 杜比国际公司 选择性低音后置滤波器
CN102074241B (zh) * 2011-01-07 2012-03-28 蔡镇滨 一种通过快速声音波形修复实现声音还原的方法
CN102959620B (zh) 2011-02-14 2015-05-13 弗兰霍菲尔运输应用研究公司 利用重迭变换的信息信号表示
KR101551046B1 (ko) 2011-02-14 2015-09-07 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 저-지연 통합 스피치 및 오디오 코딩에서 에러 은닉을 위한 장치 및 방법
CN103534754B (zh) 2011-02-14 2015-09-30 弗兰霍菲尔运输应用研究公司 在不活动阶段期间利用噪声合成的音频编解码器
TWI488177B (zh) 2011-02-14 2015-06-11 Fraunhofer Ges Forschung 使用頻譜域雜訊整形之基於線性預測的編碼方案
RU2586597C2 (ru) 2011-02-14 2016-06-10 Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф. Кодирование и декодирование позиций импульсов дорожек аудиосигнала
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
CN103493129B (zh) 2011-02-14 2016-08-10 弗劳恩霍夫应用研究促进协会 用于使用瞬态检测及质量结果将音频信号的部分编码的装置与方法
PL2676268T3 (pl) * 2011-02-14 2015-05-29 Fraunhofer Ges Forschung Urządzenie i sposób przetwarzania zdekodowanego sygnału audio w domenie widmowej
JP6110314B2 (ja) 2011-02-14 2017-04-05 フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン 整列したルックアヘッド部分を用いてオーディオ信号を符号化及び復号するための装置並びに方法
US9626982B2 (en) * 2011-02-15 2017-04-18 Voiceage Corporation Device and method for quantizing the gains of the adaptive and fixed contributions of the excitation in a CELP codec
US9384749B2 (en) * 2011-09-09 2016-07-05 Panasonic Intellectual Property Corporation Of America Encoding device, decoding device, encoding method and decoding method
DK2774145T3 (da) * 2011-11-03 2020-07-20 Voiceage Evs Llc Forbedring af ikke-taleindhold til celp-afkoder med lav hastighed
WO2013068634A1 (en) * 2011-11-10 2013-05-16 Nokia Corporation A method and apparatus for detecting audio sampling rate
US9972325B2 (en) * 2012-02-17 2018-05-15 Huawei Technologies Co., Ltd. System and method for mixed codebook excitation for speech coding
CN102970133B (zh) * 2012-11-12 2015-10-14 安徽量子通信技术有限公司 量子网络的语音传输方法和语音终端
PT2922053T (pt) * 2012-11-15 2019-10-15 Ntt Docomo Inc Dispositivo de codificação de áudio, método de codificação de áudio, programa de codificação de áudio, dispositivo de descodificação de áudio, método de descodificação de áudio, e programa de descodificação de áudio
CN105551497B (zh) 2013-01-15 2019-03-19 华为技术有限公司 编码方法、解码方法、编码装置和解码装置
LT3848929T (lt) * 2013-03-04 2023-10-25 Voiceage Evs Llc Prietaisas ir būdas kvantavimo triukšmams sumažinti laiko srities dekoderiu
US9349196B2 (en) 2013-08-09 2016-05-24 Red Hat, Inc. Merging and splitting data blocks
WO2015060654A1 (ko) * 2013-10-22 2015-04-30 한국전자통신연구원 오디오 신호의 필터 생성 방법 및 이를 위한 파라메터화 장치
EP2887350B1 (en) * 2013-12-19 2016-10-05 Dolby Laboratories Licensing Corporation Adaptive quantization noise filtering of decoded audio data
KR102222838B1 (ko) 2014-04-17 2021-03-04 보이세지 코포레이션 다른 샘플링 레이트들을 가진 프레임들간의 전환시 사운드 신호의 선형 예측 인코딩 및 디코딩을 위한 방법, 인코더 및 디코더
US9583115B2 (en) * 2014-06-26 2017-02-28 Qualcomm Incorporated Temporal gain adjustment based on high-band signal characteristic
EP2980799A1 (en) 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for processing an audio signal using a harmonic post-filter
EP2980801A1 (en) * 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for estimating noise in an audio signal, noise estimator, audio encoder, audio decoder, and system for transmitting audio signals
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
JP2016042132A (ja) * 2014-08-18 2016-03-31 ソニー株式会社 音声処理装置、音声処理方法、並びにプログラム
WO2016050854A1 (en) * 2014-10-02 2016-04-07 Dolby International Ab Decoding method and decoder for dialog enhancement
US9837089B2 (en) * 2015-06-18 2017-12-05 Qualcomm Incorporated High-band signal generation
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
EP3320539A1 (en) 2015-07-06 2018-05-16 Nokia Technologies OY Bit error detector for an audio signal decoder
US9881630B2 (en) * 2015-12-30 2018-01-30 Google Llc Acoustic keystroke transient canceler for speech communication terminals using a semi-blind adaptive filter model
CN105869653B (zh) * 2016-05-31 2019-07-12 华为技术有限公司 话音信号处理方法和相关装置和系统
KR20180003389U (ko) 2017-05-25 2018-12-05 조경래 패널용 클램핑 기구
US10957331B2 (en) * 2018-12-17 2021-03-23 Microsoft Technology Licensing, Llc Phase reconstruction in a speech decoder
DE112020001090T5 (de) * 2019-03-05 2021-12-30 Sony Group Corporation Signalverarbeitungsvorrichtung, -verfahren und -programm
WO2020207593A1 (en) * 2019-04-11 2020-10-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio decoder, apparatus for determining a set of values defining characteristics of a filter, methods for providing a decoded audio representation, methods for determining a set of values defining characteristics of a filter and computer program
US20210093203A1 (en) * 2019-09-30 2021-04-01 DawnLight Technologies Systems and methods of determining heart-rate and respiratory rate from a radar signal using machine learning methods
CN114333856B (zh) * 2021-12-24 2024-08-02 南京西觉硕信息科技有限公司 给定线性预测系数时后半帧语音信号的求解方法、装置及系统

Family Cites Families (117)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4969192A (en) 1987-04-06 1990-11-06 Voicecraft, Inc. Vector adaptive predictive coder for speech and audio
US4815134A (en) 1987-09-08 1989-03-21 Texas Instruments Incorporated Very low rate speech encoder and decoder
CN1062963C (zh) 1990-04-12 2001-03-07 多尔拜实验特许公司 用于产生高质量声音信号的解码器和编码器
US5664051A (en) 1990-09-24 1997-09-02 Digital Voice Systems, Inc. Method and apparatus for phase synthesis for speech processing
KR960013206B1 (ko) * 1990-12-31 1996-10-02 박헌철 조립식 원적외선 사우나 욕실
US5255339A (en) 1991-07-19 1993-10-19 Motorola, Inc. Low bit rate vocoder means and method
US5734789A (en) 1992-06-01 1998-03-31 Hughes Electronics Voiced, unvoiced or noise modes in a CELP vocoder
JP2746039B2 (ja) 1993-01-22 1998-04-28 日本電気株式会社 音声符号化方式
US5706352A (en) * 1993-04-07 1998-01-06 K/S Himpp Adaptive gain and filtering circuit for a sound reproduction system
IT1270438B (it) * 1993-06-10 1997-05-05 Sip Procedimento e dispositivo per la determinazione del periodo del tono fondamentale e la classificazione del segnale vocale in codificatori numerici della voce
US5615298A (en) * 1994-03-14 1997-03-25 Lucent Technologies Inc. Excitation signal synthesis during frame erasure or packet loss
US5717823A (en) 1994-04-14 1998-02-10 Lucent Technologies Inc. Speech-rate modification for linear-prediction based analysis-by-synthesis speech coders
JP3277682B2 (ja) 1994-04-22 2002-04-22 ソニー株式会社 情報符号化方法及び装置、情報復号化方法及び装置、並びに情報記録媒体及び情報伝送方法
JP3277705B2 (ja) 1994-07-27 2002-04-22 ソニー株式会社 情報符号化装置及び方法、並びに情報復号化装置及び方法
TW271524B (no) 1994-08-05 1996-03-01 Qualcomm Inc
US5699477A (en) 1994-11-09 1997-12-16 Texas Instruments Incorporated Mixed excitation linear prediction with fractional pitch
US5751903A (en) 1994-12-19 1998-05-12 Hughes Electronics Low rate multi-mode CELP codec that encodes line SPECTRAL frequencies utilizing an offset
JP3189614B2 (ja) * 1995-03-13 2001-07-16 松下電器産業株式会社 音声帯域拡大装置
JP3317470B2 (ja) 1995-03-28 2002-08-26 日本電信電話株式会社 音響信号符号化方法、音響信号復号化方法
FR2734389B1 (fr) 1995-05-17 1997-07-18 Proust Stephane Procede d'adaptation du niveau de masquage du bruit dans un codeur de parole a analyse par synthese utilisant un filtre de ponderation perceptuelle a court terme
US5668925A (en) 1995-06-01 1997-09-16 Martin Marietta Corporation Low data rate speech encoder with mixed excitation
US5664055A (en) 1995-06-07 1997-09-02 Lucent Technologies Inc. CS-ACELP speech compression system with adaptive pitch prediction filter gain based on a measure of periodicity
US5699485A (en) 1995-06-07 1997-12-16 Lucent Technologies Inc. Pitch delay modification during frame erasures
US5774837A (en) 1995-09-13 1998-06-30 Voxware, Inc. Speech coding system and method using voicing probability determination
EP0763818B1 (en) * 1995-09-14 2003-05-14 Kabushiki Kaisha Toshiba Formant emphasis method and formant emphasis filter device
US5864798A (en) * 1995-09-18 1999-01-26 Kabushiki Kaisha Toshiba Method and apparatus for adjusting a spectrum shape of a speech signal
US5835495A (en) 1995-10-11 1998-11-10 Microsoft Corporation System and method for scaleable streamed audio transmission over a network
TW321810B (no) 1995-10-26 1997-12-01 Sony Co Ltd
IT1281001B1 (it) 1995-10-27 1998-02-11 Cselt Centro Studi Lab Telecom Procedimento e apparecchiatura per codificare, manipolare e decodificare segnali audio.
US5778335A (en) 1996-02-26 1998-07-07 The Regents Of The University Of California Method and apparatus for efficient multiband celp wideband speech and music coding and decoding
US6041345A (en) 1996-03-08 2000-03-21 Microsoft Corporation Active stream format for holding multiple media streams
JP3248668B2 (ja) * 1996-03-25 2002-01-21 日本電信電話株式会社 ディジタルフィルタおよび音響符号化／復号化装置
SE506341C2 (sv) 1996-04-10 1997-12-08 Ericsson Telefon Ab L M Metod och anordning för rekonstruktion av en mottagen talsignal
JP3335841B2 (ja) 1996-05-27 2002-10-21 日本電気株式会社 信号符号化装置
US5819298A (en) * 1996-06-24 1998-10-06 Sun Microsystems, Inc. File allocation tables with holes
JP3472974B2 (ja) 1996-10-28 2003-12-02 日本電信電話株式会社 音響信号符号化方法および音響信号復号化方法
US6570991B1 (en) 1996-12-18 2003-05-27 Interval Research Corporation Multi-feature speech/music discrimination system
US6317714B1 (en) 1997-02-04 2001-11-13 Microsoft Corporation Controller and associated mechanical characters operable for continuously performing received control data while engaging in bidirectional communications over a single communications channel
US6134518A (en) 1997-03-04 2000-10-17 International Business Machines Corporation Digital audio signal coding using a CELP coder and a transform coder
US6131084A (en) 1997-03-14 2000-10-10 Digital Voice Systems, Inc. Dual subframe quantization of spectral magnitudes
US6292834B1 (en) 1997-03-14 2001-09-18 Microsoft Corporation Dynamic bandwidth selection for efficient transmission of multimedia streams in a computer network
US6728775B1 (en) 1997-03-17 2004-04-27 Microsoft Corporation Multiple multicasting of multimedia streams
JP3185748B2 (ja) 1997-04-09 2001-07-11 日本電気株式会社 信号符号化装置
IL120788A (en) 1997-05-06 2000-07-16 Audiocodes Ltd Systems and methods for encoding and decoding speech for lossy transmission networks
JP3731901B2 (ja) 1997-05-12 2006-01-05 アマティ コミュニケイションズ コーポレイション スーパフレーム・ビット配分方法及び装置
US6009122A (en) 1997-05-12 1999-12-28 Amati Communciations Corporation Method and apparatus for superframe bit allocation
US6058359A (en) 1998-03-04 2000-05-02 Telefonaktiebolaget L M Ericsson Speech coding including soft adaptability feature
FI973873A7 (fi) 1997-10-02 1999-04-03 Nokia Mobile Phones Ltd Puhekoodaus
US6263312B1 (en) 1997-10-03 2001-07-17 Alaris, Inc. Audio compression and decompression employing subband decomposition of residual signal and distortion reduction
EP0967594B1 (en) 1997-10-22 2006-12-13 Matsushita Electric Industrial Co., Ltd. Sound encoder and sound decoder
US6199037B1 (en) 1997-12-04 2001-03-06 Digital Voice Systems, Inc. Joint quantization of speech subframe voicing metrics and fundamental frequencies
US5870412A (en) 1997-12-12 1999-02-09 3Com Corporation Forward error correction system for packet based real time media
AU3372199A (en) 1998-03-30 1999-10-18 Voxware, Inc. Low-complexity, low-delay, scalable and embedded speech and audio coding with adaptive frame loss concealment
US6029126A (en) 1998-06-30 2000-02-22 Microsoft Corporation Scalable audio coder and decoder
US6240386B1 (en) * 1998-08-24 2001-05-29 Conexant Systems, Inc. Speech codec employing noise classification for noise compensation
US6330533B2 (en) 1998-08-24 2001-12-11 Conexant Systems, Inc. Speech encoder adaptively applying pitch preprocessing with warping of target signal
US6385573B1 (en) 1998-08-24 2002-05-07 Conexant Systems, Inc. Adaptive tilt compensation for synthesized speech residual
US6493665B1 (en) 1998-08-24 2002-12-10 Conexant Systems, Inc. Speech classification and parameter weighting used in codebook search
US6823303B1 (en) 1998-08-24 2004-11-23 Conexant Systems, Inc. Speech encoder using voice activity detection in coding noise
FR2784218B1 (fr) 1998-10-06 2000-12-08 Thomson Csf Procede de codage de la parole a bas debit
US6438136B1 (en) 1998-10-09 2002-08-20 Microsoft Corporation Method for scheduling time slots in a communications network channel to support on-going video transmissions
US6289297B1 (en) 1998-10-09 2001-09-11 Microsoft Corporation Method for reconstructing a video frame received from a video source over a communication channel
GB2342829B (en) * 1998-10-13 2003-03-26 Nokia Mobile Phones Ltd Postfilter
JP4359949B2 (ja) 1998-10-22 2009-11-11 ソニー株式会社 信号符号化装置及び方法、並びに信号復号装置及び方法
US6310915B1 (en) 1998-11-20 2001-10-30 Harmonic Inc. Video transcoder with bitstream look ahead for rate control and statistical multiplexing
US6226606B1 (en) 1998-11-24 2001-05-01 Microsoft Corporation Method and apparatus for pitch tracking
US6385665B1 (en) * 1998-12-18 2002-05-07 Alcatel Usa Sourcing, L.P. System and method for managing faults in a data transmission system
US6311154B1 (en) 1998-12-30 2001-10-30 Nokia Mobile Phones Limited Adaptive windows for analysis-by-synthesis CELP-type speech coding
US6499060B1 (en) 1999-03-12 2002-12-24 Microsoft Corporation Media coding for loss recovery with remotely predicted data units
US6460153B1 (en) 1999-03-26 2002-10-01 Microsoft Corp. Apparatus and method for unequal error protection in multiple-description coding using overcomplete expansions
US6952668B1 (en) 1999-04-19 2005-10-04 At&T Corp. Method and apparatus for performing packet loss or frame erasure concealment
US7117156B1 (en) 1999-04-19 2006-10-03 At&T Corp. Method and apparatus for performing packet loss or frame erasure concealment
DE19921122C1 (de) 1999-05-07 2001-01-25 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Verschleiern eines Fehlers in einem codierten Audiosignal und Verfahren und Vorrichtung zum Decodieren eines codierten Audiosignals
JP3365346B2 (ja) * 1999-05-18 2003-01-08 日本電気株式会社 音声符号化装置及び方法並びに音声符号化プログラムを記録した記憶媒体
US6633841B1 (en) 1999-07-29 2003-10-14 Mindspeed Technologies, Inc. Voice activity detection speech coding to accommodate music signals
US6434247B1 (en) * 1999-07-30 2002-08-13 Gn Resound A/S Feedback cancellation apparatus and methods utilizing adaptive reference filter mechanisms
US6775649B1 (en) 1999-09-01 2004-08-10 Texas Instruments Incorporated Concealment of frame erasures for speech transmission and storage system and method
US6505152B1 (en) 1999-09-03 2003-01-07 Microsoft Corporation Method and apparatus for using formant models in speech systems
US6782360B1 (en) 1999-09-22 2004-08-24 Mindspeed Technologies, Inc. Gain quantization for a CELP speech coder
US7315815B1 (en) 1999-09-22 2008-01-01 Microsoft Corporation LPC-harmonic vocoder with superframe structure
US6772126B1 (en) 1999-09-30 2004-08-03 Motorola, Inc. Method and apparatus for transferring low bit rate digital voice messages using incremental messages
JP2001117573A (ja) * 1999-10-20 2001-04-27 Toshiba Corp 音声スペクトル強調方法／装置及び音声復号化装置
US6621935B1 (en) 1999-12-03 2003-09-16 Microsoft Corporation System and method for robust image representation over error-prone channels
US6732070B1 (en) 2000-02-16 2004-05-04 Nokia Mobile Phones, Ltd. Wideband speech codec using a higher sampling rate in analysis and synthesis filtering than in excitation searching
US6693964B1 (en) 2000-03-24 2004-02-17 Microsoft Corporation Methods and arrangements for compressing image based rendering data using multiple reference frame prediction techniques that support just-in-time rendering of an image
US6757654B1 (en) 2000-05-11 2004-06-29 Telefonaktiebolaget Lm Ericsson Forward error correction in speech coding
JP2002118517A (ja) 2000-07-31 2002-04-19 Sony Corp 直交変換装置及び方法、逆直交変換装置及び方法、変換符号化装置及び方法、並びに復号装置及び方法
US6934678B1 (en) 2000-09-25 2005-08-23 Koninklijke Philips Electronics N.V. Device and method for coding speech to be recognized (STBR) at a near end
EP1199709A1 (en) * 2000-10-20 2002-04-24 Telefonaktiebolaget Lm Ericsson Error Concealment in relation to decoding of encoded acoustic signals
US6968309B1 (en) 2000-10-31 2005-11-22 Nokia Mobile Phones Ltd. Method and system for speech frame error concealment in speech decoding
EP1353323B1 (en) 2000-11-27 2007-01-17 Nippon Telegraph and Telephone Corporation Method, device and program for coding and decoding acoustic parameter, and method, device and program for coding and decoding sound
EP1356454B1 (en) 2001-01-19 2006-03-01 Koninklijke Philips Electronics N.V. Wideband signal transmission system
US6614370B2 (en) 2001-01-26 2003-09-02 Oded Gottesman Redundant compression techniques for transmitting data over degraded communication links and/or storing data on media subject to degradation
US7151749B2 (en) 2001-06-14 2006-12-19 Microsoft Corporation Method and System for providing adaptive bandwidth control for real-time communication
US6658383B2 (en) 2001-06-26 2003-12-02 Microsoft Corporation Method for coding speech and music signals
US6941263B2 (en) 2001-06-29 2005-09-06 Microsoft Corporation Frequency domain postfiltering for quality enhancement of coded speech
US6879955B2 (en) 2001-06-29 2005-04-12 Microsoft Corporation Signal modification based on continuous time warping for low bit rate CELP coding
US7277554B2 (en) * 2001-08-08 2007-10-02 Gn Resound North America Corporation Dynamic range compression using digital frequency warping
US7512535B2 (en) * 2001-10-03 2009-03-31 Broadcom Corporation Adaptive postfiltering methods and systems for decoding speech
US6785645B2 (en) 2001-11-29 2004-08-31 Microsoft Corporation Real-time speech and music classifier
US7027982B2 (en) 2001-12-14 2006-04-11 Microsoft Corporation Quality and rate control strategy for digital audio
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
US6789123B2 (en) 2001-12-28 2004-09-07 Microsoft Corporation System and method for delivery of dynamically scalable audio/video content over a network
US6647366B2 (en) 2001-12-28 2003-11-11 Microsoft Corporation Rate control strategies for speech and music coding
JP4000589B2 (ja) * 2002-03-07 2007-10-31 ソニー株式会社 復号装置および復号方法、並びにプログラムおよび記録媒体
CA2388352A1 (en) * 2002-05-31 2003-11-30 Voiceage Corporation A method and device for frequency-selective pitch enhancement of synthesized speed
CA2388439A1 (en) 2002-05-31 2003-11-30 Voiceage Corporation A method and device for efficient frame erasure concealment in linear predictive based speech codecs
US7356748B2 (en) 2003-12-19 2008-04-08 Telefonaktiebolaget Lm Ericsson (Publ) Partial spectral loss concealment in transform codecs
JP2007522706A (ja) * 2004-01-19 2007-08-09 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ オーディオ信号処理システム
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
US7668712B2 (en) 2004-03-31 2010-02-23 Microsoft Corporation Audio encoding and decoding with intra frames and adaptive forward error correction
US7362819B2 (en) * 2004-06-16 2008-04-22 Lucent Technologies Inc. Device and method for reducing peaks of a composite signal
CA2574101C (en) 2004-07-19 2013-06-25 Eberle Design, Inc. Methods and apparatus for an improved signal monitor
RU2386179C2 (ru) * 2005-04-01 2010-04-10 Квэлкомм Инкорпорейтед Способ и устройство для кодирования речевых сигналов с расщеплением полосы
US7177804B2 (en) 2005-05-31 2007-02-13 Microsoft Corporation Sub-band voice codec with multi-stage codebooks and redundant coding
US7831421B2 (en) 2005-05-31 2010-11-09 Microsoft Corporation Robust decoder
US7707034B2 (en) * 2005-05-31 2010-04-27 Microsoft Corporation Audio codec post-filter

Also Published As

Publication number Publication date
EP1899962A2 (en) 2008-03-19
CN101501763A (zh) 2009-08-05
AU2006252962A1 (en) 2006-12-07
ES2644730T3 (es) 2017-11-30
KR101246991B1 (ko) 2013-03-25
WO2006130226A2 (en) 2006-12-07
MX2007014555A (es) 2008-11-06
EP1899962B1 (en) 2017-07-26
NO340411B1 (no) 2017-04-18
EG26313A (en) 2013-07-24
KR20080011216A (ko) 2008-01-31
KR20120121928A (ko) 2012-11-06
JP2009508146A (ja) 2009-02-26
US20060271354A1 (en) 2006-11-30
CA2609539A1 (en) 2006-12-07
ZA200710201B (en) 2009-08-26
JP5165559B2 (ja) 2013-03-21
JP2012163981A (ja) 2012-08-30
KR101344174B1 (ko) 2013-12-20
JP5688852B2 (ja) 2015-03-25
IL187167A0 (en) 2008-06-05
EP1899962A4 (en) 2014-09-10
CN101501763B (zh) 2012-09-19
WO2006130226A3 (en) 2009-04-23
US7707034B2 (en) 2010-04-27
NZ563461A (en) 2011-01-28
CA2609539C (en) 2016-03-29
AU2006252962B2 (en) 2011-04-07

Similar Documents

Publication Publication Date Title
WO2006130226A3 (en) Audio codec post-filter
TW200611241A (en) Multichannel decorrelation in spatial audio coding
IL186442A0 (en) Systems, methods, and apparatus for anti-sparseness filtering
JP2009508146A5 (no)
ATE420431T1 (de) Grundfrequenzextraktion mit adaptivem filter
NO20064431L (no) Prosessering av et multikanalsignal
UA92742C2 (ru) Способ и устройство для кодирования речевых сигналов с расщеплением полосы
ATE425532T1 (de) Modellbasierte verbesserung von sprachsignalen
AU2003252727A8 (en) Audio decoding apparatus and audio decoding method based on spectral band repliction
ATE356405T1 (de) System und verfahren zur signalverarbeitung
EP2366218A4 (en) FREQUENCY AGILES FILTER WITH DIGITAL FILTER AND BAND LOCK
BR112013020482A2 (pt) aparelho e método para processar um sinal de áudio decodificado em um domínio espectral
WO2007120939A3 (en) Spur suppression for a receiver in a wireless communication system
DE60108752D1 (de) Verfahren zur rauschunterdrückung in einem adaptiven strahlformer
AU2002333608A1 (en) Dynamic pilot filter bandwidth estimation
ATE555605T1 (de) Verfahren der bitstream-filterung gemäss benutzerspezifikationen
WO2003022401A3 (en) Multifunctional filter
WO2005004002A3 (fr) Procede de traitement d’une sequence sonore, telle qu’un morceau musical
DE502007006264D1 (de) Vorrichtung zur geräuschunterdrückung bei einem audiosignal
TW200623027A (en) Processing of encoded signals
DE602005006957D1 (de) Verringerung der Rückkopplung von Kommunikationssystemen
WO2009012139A3 (en) Estimation of multichannel mud characteristics
TWI268659B (en) Dual-band bandpass filter
EP4489276A4 (en) NOISE FILTER
FI20080642A7 (fi) Menetelmä typen ja fosforin poistamiseksi harmaasta vedestä ja laite

Legal Events

Date Code Title Description
CHAD Change of the owner's name or address (par. 44 patent law, par. patentforskriften)

Owner name: MICROSOFT TECHNOLOGY LICENSING, US