ATE355591T1 - Nachfilterung von kodierter sprache im frequenzbereich - Google Patents

Nachfilterung von kodierter sprache im frequenzbereich

Info

Publication number
ATE355591T1
ATE355591T1 AT02013983T AT02013983T ATE355591T1 AT E355591 T1 ATE355591 T1 AT E355591T1 AT 02013983 T AT02013983 T AT 02013983T AT 02013983 T AT02013983 T AT 02013983T AT E355591 T1 ATE355591 T1 AT E355591T1
Authority
AT
Austria
Prior art keywords
lpc
computation
frequency domain
deriving
decoder
Prior art date
Application number
AT02013983T
Other languages
English (en)
Inventor
Hong Wang
Vladiir Cuperman
Allen Gersho
Hosam A Khalil
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
Application granted granted Critical
Publication of ATE355591T1 publication Critical patent/ATE355591T1/de

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
    • 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
    • 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
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
AT02013983T 2001-06-29 2002-06-25 Nachfilterung von kodierter sprache im frequenzbereich ATE355591T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/896,062 US6941263B2 (en) 2001-06-29 2001-06-29 Frequency domain postfiltering for quality enhancement of coded speech

Publications (1)

Publication Number Publication Date
ATE355591T1 true ATE355591T1 (de) 2006-03-15

Family

ID=25405563

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02013983T ATE355591T1 (de) 2001-06-29 2002-06-25 Nachfilterung von kodierter sprache im frequenzbereich

Country Status (5)

Country Link
US (2) US6941263B2 (de)
EP (1) EP1271472B1 (de)
JP (1) JP4376489B2 (de)
AT (1) ATE355591T1 (de)
DE (1) DE60218385T2 (de)

Families Citing this family (45)

* 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
US6941263B2 (en) * 2001-06-29 2005-09-06 Microsoft Corporation Frequency domain postfiltering for quality enhancement of coded speech
US20030187663A1 (en) 2002-03-28 2003-10-02 Truman Michael Mead Broadband frequency translation for high frequency regeneration
US8625680B2 (en) * 2003-09-07 2014-01-07 Microsoft Corporation Bitstream-controlled post-processing filtering
US7478040B2 (en) * 2003-10-24 2009-01-13 Broadcom Corporation Method for adaptive filtering
US7668712B2 (en) * 2004-03-31 2010-02-23 Microsoft Corporation Audio encoding and decoding with intra frames and adaptive forward error correction
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
US7177804B2 (en) 2005-05-31 2007-02-13 Microsoft Corporation Sub-band voice codec with multi-stage codebooks and redundant coding
WO2006134992A1 (ja) * 2005-06-17 2006-12-21 Matsushita Electric Industrial Co., Ltd. ポストフィルタ、復号化装置及びポストフィルタ処理方法
US8027242B2 (en) * 2005-10-21 2011-09-27 Qualcomm Incorporated Signal coding and decoding based on spectral dynamics
US7720677B2 (en) * 2005-11-03 2010-05-18 Coding Technologies Ab Time warped modified transform coding of audio signals
US7774396B2 (en) 2005-11-18 2010-08-10 Dynamic Hearing Pty Ltd Method and device for low delay processing
KR101366376B1 (ko) * 2006-01-24 2014-02-24 베라요, 인크. 신호 제너레이터에 기반한 장치 보안
JP5460057B2 (ja) 2006-02-21 2014-04-02 ウルフソン・ダイナミック・ヒアリング・ピーティーワイ・リミテッド 低遅延処理方法及び方法
US7590523B2 (en) * 2006-03-20 2009-09-15 Mindspeed Technologies, Inc. Speech post-processing using MDCT coefficients
US8392176B2 (en) 2006-04-10 2013-03-05 Qualcomm Incorporated Processing of excitation in audio coding and decoding
WO2008032828A1 (en) * 2006-09-15 2008-03-20 Panasonic Corporation Audio encoding device and audio encoding method
JP4757158B2 (ja) * 2006-09-20 2011-08-24 富士通株式会社 音信号処理方法、音信号処理装置及びコンピュータプログラム
WO2008107027A1 (en) 2007-03-02 2008-09-12 Telefonaktiebolaget Lm Ericsson (Publ) Methods and arrangements in a telecommunications network
CN101303858B (zh) * 2007-05-11 2011-06-01 华为技术有限公司 实现基音增强后处理的方法及装置
US8428957B2 (en) 2007-08-24 2013-04-23 Qualcomm Incorporated Spectral noise shaping in audio coding based on spectral dynamics in frequency sub-bands
KR100922897B1 (ko) * 2007-12-11 2009-10-20 한국전자통신연구원 Ｍｄｃｔ 영역에서 음질 향상을 위한 후처리 필터장치 및필터방법
WO2010009098A1 (en) * 2008-07-18 2010-01-21 Dolby Laboratories Licensing Corporation Method and system for frequency domain postfiltering of encoded audio data in a decoder
JP4516157B2 (ja) * 2008-09-16 2010-08-04 パナソニック株式会社 音声分析装置、音声分析合成装置、補正規則情報生成装置、音声分析システム、音声分析方法、補正規則情報生成方法、およびプログラム
PT2515299T (pt) * 2009-12-14 2018-10-10 Fraunhofer Ges Forschung Dispositivo de quantificação vetorial, dispositivo de codificação de voz, método de quantificação vetorial e método de codificação de voz
KR101696632B1 (ko) 2010-07-02 2017-01-16 돌비 인터네셔널 에이비 선택적인 베이스 포스트 필터
TWI564882B (zh) 2011-02-14 2017-01-01 弗勞恩霍夫爾協會 利用重疊變換之資訊信號表示技術（一）
WO2012110448A1 (en) 2011-02-14 2012-08-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for coding a portion of an audio signal using a transient detection and a quality result
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
KR101613673B1 (ko) 2011-02-14 2016-04-29 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 불활성 위상 동안에 잡음 합성을 사용하는 오디오 코덱
TWI479478B (zh) 2011-02-14 2015-04-01 弗勞恩霍夫爾協會 用以使用對齊的預看部分將音訊信號解碼的裝置與方法
KR101699898B1 (ko) * 2011-02-14 2017-01-25 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 스펙트럼 영역에서 디코딩된 오디오 신호를 처리하기 위한 방법 및 장치
BR112013020324B8 (pt) 2011-02-14 2022-02-08 Fraunhofer Ges Forschung Aparelho e método para supressão de erro em fala unificada de baixo atraso e codificação de áudio
CN102930872A (zh) * 2012-11-05 2013-02-13 深圳广晟信源技术有限公司 用于宽带语音解码中基音增强后处理的方法及装置
ES2799773T3 (es) * 2013-01-29 2020-12-21 Fraunhofer Ges Forschung Llenado de ruido sin información secundaria para codificadores tipo CELP
US9870784B2 (en) 2013-09-06 2018-01-16 Nuance Communications, Inc. Method for voicemail quality detection
US9685173B2 (en) * 2013-09-06 2017-06-20 Nuance Communications, Inc. Method for non-intrusive acoustic parameter estimation
BR122020015614B1 (pt) * 2014-04-17 2022-06-07 Voiceage Evs Llc Método e dispositivo para interpolar parâmetros de filtro de predição linear em um quadro de processamento de sinal sonoro atual seguindo um quadro de processamento de sinal sonoro anterior
US10741195B2 (en) * 2016-02-15 2020-08-11 Mitsubishi Electric Corporation Sound signal enhancement device
CN111833891B (zh) * 2020-07-21 2024-05-14 北京百瑞互联技术股份有限公司 一种lc3编解码系统、lc3编码器及其优化方法
CN114171035B (zh) * 2020-09-11 2024-10-15 海能达通信股份有限公司 抗干扰方法及装置
CN114119421B (zh) * 2021-12-02 2025-07-18 东莞创能科技开发有限公司 一种多段式荧光显微信号增强系统及其训练方法
CN117462113A (zh) * 2023-11-28 2024-01-30 华南理工大学 一种基于咳嗽音的通气功能评估方法、装置、介质及设备
CN119068898B (zh) * 2024-11-04 2025-02-07 时擎智能科技(上海)有限公司 一种基于频点增益平滑的自适应降噪方法及后置滤波器

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4885790A (en) * 1985-03-18 1989-12-05 Massachusetts Institute Of Technology Processing of acoustic waveforms
US5067158A (en) * 1985-06-11 1991-11-19 Texas Instruments Incorporated Linear predictive residual representation via non-iterative spectral reconstruction
US4969192A (en) 1987-04-06 1990-11-06 Voicecraft, Inc. Vector adaptive predictive coder for speech and audio
US5701390A (en) * 1995-02-22 1997-12-23 Digital Voice Systems, Inc. Synthesis of MBE-based coded speech using regenerated phase information
US5774837A (en) * 1995-09-13 1998-06-30 Voxware, Inc. Speech coding system and method using voicing probability determination
JP3653826B2 (ja) * 1995-10-26 2005-06-02 ソニー株式会社 音声復号化方法及び装置
KR0155315B1 (ko) * 1995-10-31 1998-12-15 양승택 Lsp를 이용한 celp보코더의 피치 검색방법
US6047254A (en) * 1996-05-15 2000-04-04 Advanced Micro Devices, Inc. System and method for determining a first formant analysis filter and prefiltering a speech signal for improved pitch estimation
US6073092A (en) * 1997-06-26 2000-06-06 Telogy Networks, Inc. Method for speech coding based on a code excited linear prediction (CELP) model
US6098036A (en) * 1998-07-13 2000-08-01 Lockheed Martin Corp. Speech coding system and method including spectral formant enhancer
US6480822B2 (en) 1998-08-24 2002-11-12 Conexant Systems, Inc. Low complexity random codebook structure
US6493665B1 (en) * 1998-08-24 2002-12-10 Conexant Systems, Inc. Speech classification and parameter weighting used in codebook search
US6385573B1 (en) * 1998-08-24 2002-05-07 Conexant Systems, Inc. Adaptive tilt compensation for synthesized speech residual
US6823303B1 (en) * 1998-08-24 2004-11-23 Conexant Systems, Inc. Speech encoder using voice activity detection in coding noise
US6449592B1 (en) * 1999-02-26 2002-09-10 Qualcomm Incorporated Method and apparatus for tracking the phase of a quasi-periodic signal
US6505152B1 (en) * 1999-09-03 2003-01-07 Microsoft Corporation Method and apparatus for using formant models in speech systems
US6704711B2 (en) * 2000-01-28 2004-03-09 Telefonaktiebolaget Lm Ericsson (Publ) System and method for modifying speech signals
US6941263B2 (en) * 2001-06-29 2005-09-06 Microsoft Corporation Frequency domain postfiltering for quality enhancement of coded speech

Also Published As

Publication number Publication date
EP1271472A2 (de) 2003-01-02
US20030009326A1 (en) 2003-01-09
US7124077B2 (en) 2006-10-17
US6941263B2 (en) 2005-09-06
DE60218385D1 (de) 2007-04-12
DE60218385T2 (de) 2007-06-14
JP4376489B2 (ja) 2009-12-02
JP2003108196A (ja) 2003-04-11
EP1271472B1 (de) 2007-02-28
EP1271472A3 (de) 2003-11-05
US20050131696A1 (en) 2005-06-16

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