CN1186766C - Celp语音编码解码器、celp音调增强系统以及celp方法 - Google Patents

Celp语音编码解码器、celp音调增强系统以及celp方法 Download PDF

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Publication number
CN1186766C
CN1186766C CNB008099723A CN00809972A CN1186766C CN 1186766 C CN1186766 C CN 1186766C CN B008099723 A CNB008099723 A CN B008099723A CN 00809972 A CN00809972 A CN 00809972A CN 1186766 C CN1186766 C CN 1186766C
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China
Prior art keywords
speech
tone
intensifier circuit
pulse
pitch enhancement
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Expired - Fee Related
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CNB008099723A
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English (en)
Chinese (zh)
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CN1360716A (zh
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高扬
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Conexant Systems LLC
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Conexant Systems LLC
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    • 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
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • 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

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  • 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)
CNB008099723A 1999-07-02 2000-06-30 Celp语音编码解码器、celp音调增强系统以及celp方法 Expired - Fee Related CN1186766C (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US14209299P 1999-07-02 1999-07-02
US60/142,092 1999-07-02
US60/365,444 1999-08-02
US09/365,444 US6704701B1 (en) 1999-07-02 1999-08-02 Bi-directional pitch enhancement in speech coding systems

Publications (2)

Publication Number Publication Date
CN1360716A CN1360716A (zh) 2002-07-24
CN1186766C true CN1186766C (zh) 2005-01-26

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CNB008099723A Expired - Fee Related CN1186766C (zh) 1999-07-02 2000-06-30 Celp语音编码解码器、celp音调增强系统以及celp方法

Country Status (7)

Country Link
US (1) US6704701B1 (enExample)
EP (1) EP1194925B1 (enExample)
JP (2) JP4629937B2 (enExample)
CN (1) CN1186766C (enExample)
DE (1) DE60014904T2 (enExample)
TW (1) TW473703B (enExample)
WO (1) WO2001003125A1 (enExample)

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KR100841096B1 (ko) * 2002-10-14 2008-06-25 리얼네트웍스아시아퍼시픽 주식회사 음성 코덱에 대한 디지털 오디오 신호의 전처리 방법
KR100754439B1 (ko) * 2003-01-09 2007-08-31 와이더댄 주식회사 이동 전화상의 체감 음질을 향상시키기 위한 디지털오디오 신호의 전처리 방법
US8296134B2 (en) * 2005-05-13 2012-10-23 Panasonic Corporation Audio encoding apparatus and spectrum modifying method
CN101266797B (zh) * 2007-03-16 2011-06-01 展讯通信（上海）有限公司 语音信号后处理滤波方法
DE112011100329T5 (de) 2010-01-25 2012-10-31 Andrew Peter Nelson Jerram Vorrichtungen, Verfahren und Systeme für eine Digitalkonversationsmanagementplattform
US9728200B2 (en) 2013-01-29 2017-08-08 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for adaptive formant sharpening in linear prediction coding
US9418671B2 (en) * 2013-08-15 2016-08-16 Huawei Technologies Co., Ltd. Adaptive high-pass post-filter
US9620134B2 (en) 2013-10-10 2017-04-11 Qualcomm Incorporated Gain shape estimation for improved tracking of high-band temporal characteristics
US10614816B2 (en) 2013-10-11 2020-04-07 Qualcomm Incorporated Systems and methods of communicating redundant frame information
US10083708B2 (en) 2013-10-11 2018-09-25 Qualcomm Incorporated Estimation of mixing factors to generate high-band excitation signal
US9384746B2 (en) 2013-10-14 2016-07-05 Qualcomm Incorporated Systems and methods of energy-scaled signal processing
US10163447B2 (en) 2013-12-16 2018-12-25 Qualcomm Incorporated High-band signal modeling
CN109767781A (zh) * 2019-03-06 2019-05-17 哈尔滨工业大学（深圳） 基于超高斯先验语音模型与深度学习的语音分离方法、系统及存储介质

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JPH0291699A (ja) * 1988-09-28 1990-03-30 Nec Corp 音声符号化復号化方式
US5495555A (en) * 1992-06-01 1996-02-27 Hughes Aircraft Company High quality low bit rate celp-based speech codec
CA2108623A1 (en) * 1992-11-02 1994-05-03 Yi-Sheng Wang Adaptive pitch pulse enhancer and method for use in a codebook excited linear prediction (celp) search loop
CA2124713C (en) * 1993-06-18 1998-09-22 Willem Bastiaan Kleijn Long term predictor
US5774837A (en) * 1995-09-13 1998-06-30 Voxware, Inc. Speech coding system and method using voicing probability determination
WO1997027578A1 (en) * 1996-01-26 1997-07-31 Motorola Inc. Very low bit rate time domain speech analyzer for voice messaging
JP2940464B2 (ja) * 1996-03-27 1999-08-25 日本電気株式会社 音声復号化装置
US6161086A (en) * 1997-07-29 2000-12-12 Texas Instruments Incorporated Low-complexity speech coding with backward and inverse filtered target matching and a tree structured mutitap adaptive codebook search
JPH11184500A (ja) * 1997-12-24 1999-07-09 Fujitsu Ltd 音声符号化方式及び音声復号化方式
US6385576B2 (en) * 1997-12-24 2002-05-07 Kabushiki Kaisha Toshiba Speech encoding/decoding method using reduced subframe pulse positions having density related to pitch
US6240386B1 (en) * 1998-08-24 2001-05-29 Conexant Systems, Inc. Speech codec employing noise classification for noise compensation
US6556966B1 (en) * 1998-08-24 2003-04-29 Conexant Systems, Inc. Codebook structure for changeable pulse multimode speech coding
CA2252170A1 (en) * 1998-10-27 2000-04-27 Bruno Bessette A method and device for high quality coding of wideband speech and audio signals
US6581032B1 (en) * 1999-09-22 2003-06-17 Conexant Systems, Inc. Bitstream protocol for transmission of encoded voice signals
US6574593B1 (en) * 1999-09-22 2003-06-03 Conexant Systems, Inc. Codebook tables for encoding and decoding
US6604070B1 (en) * 1999-09-22 2003-08-05 Conexant Systems, Inc. System of encoding and decoding speech signals

Also Published As

Publication number Publication date
WO2001003125B1 (en) 2001-02-08
JP2003504655A (ja) 2003-02-04
DE60014904D1 (de) 2004-11-18
TW473703B (en) 2002-01-21
JP4629937B2 (ja) 2011-02-09
EP1194925A1 (en) 2002-04-10
DE60014904T2 (de) 2005-12-22
EP1194925B1 (en) 2004-10-13
JP2011048387A (ja) 2011-03-10
CN1360716A (zh) 2002-07-24
WO2001003125A1 (en) 2001-01-11
US6704701B1 (en) 2004-03-09

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