WO2008108082A1 - 音声復号装置および音声復号方法 - Google Patents

音声復号装置および音声復号方法 Download PDF

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Publication number
WO2008108082A1
WO2008108082A1 PCT/JP2008/000406 JP2008000406W WO2008108082A1 WO 2008108082 A1 WO2008108082 A1 WO 2008108082A1 JP 2008000406 W JP2008000406 W JP 2008000406W WO 2008108082 A1 WO2008108082 A1 WO 2008108082A1
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WIPO (PCT)
Prior art keywords
decoded
unit
signal
lpc
sound source
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PCT/JP2008/000406
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English (en)
French (fr)
Inventor
Hiroyuki Ehara
Original Assignee
Panasonic Corporation
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Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Priority to JP2009502460A priority Critical patent/JP5164970B2/ja
Priority to CN200880005495XA priority patent/CN101617362B/zh
Priority to US12/528,878 priority patent/US8554548B2/en
Priority to EP08710509A priority patent/EP2116997A4/en
Publication of WO2008108082A1 publication Critical patent/WO2008108082A1/ja

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

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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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

　背景雑音レベルの大きさに応じて高域強調の度合いを調整することができる音声復号装置。この装置において、音源信号復号部（２０４）は、分離部（２０１）で分離された音源符号化データを用いて復号処理を行って音源信号を得、ＬＰＣ合成フィルタ（２０５）は、音源信号と、ＬＰＣ復号部（２０３）で生成されたＬＰＣとを用いてＬＰＣ合成フィルタリング処理を行い復号音声信号を得、モード判定部（２０７）は、ＬＰＣ復号部（２０３）から入力される復号ＬＳＰを用いて、復号音声信号が定常雑音区間であるか否かを判定し、パワー算出部（２０６）は、復号音声信号のパワーを算出し、ＳＮＲ算出部（２０８）は、復号音声信号のパワーと、モード判定部（２０７）におけるモード判定結果とを用いて復号音声信号のＳＮＲを算出し、ポストフィルタ（２０９）は、復号音声信号のＳＮＲを用いてポストフィルタリング処理を行う。
PCT/JP2008/000406 2007-03-02 2008-02-29 音声復号装置および音声復号方法 WO2008108082A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2009502460A JP5164970B2 (ja) 2007-03-02 2008-02-29 音声復号装置および音声復号方法
CN200880005495XA CN101617362B (zh) 2007-03-02 2008-02-29 语音解码装置和语音解码方法
US12/528,878 US8554548B2 (en) 2007-03-02 2008-02-29 Speech decoding apparatus and speech decoding method including high band emphasis processing
EP08710509A EP2116997A4 (en) 2007-03-02 2008-02-29 AUDIO DECODING DEVICE AND AUDIO DECODING METHOD

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-053531 2007-03-02
JP2007053531 2007-03-02

Publications (1)

Publication Number Publication Date
WO2008108082A1 true WO2008108082A1 (ja) 2008-09-12

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US (1) US8554548B2 (ja)
EP (1) EP2116997A4 (ja)
JP (1) JP5164970B2 (ja)
CN (1) CN101617362B (ja)
WO (1) WO2008108082A1 (ja)

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WO2013108343A1 (ja) * 2012-01-20 2013-07-25 パナソニック株式会社 音声復号装置及び音声復号方法
WO2014034697A1 (ja) * 2012-08-29 2014-03-06 日本電信電話株式会社 復号方法、復号装置、プログラム、及びその記録媒体

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DK3549949T5 (da) * 2011-04-22 2024-09-02 Wyeth Llc Sammensætninger vedrørende et mutant Clostridium-difficile-toksin og fremgangsmåder dertil
US9117455B2 (en) * 2011-07-29 2015-08-25 Dts Llc Adaptive voice intelligibility processor
WO2013124712A1 (en) * 2012-02-24 2013-08-29 Nokia Corporation Noise adaptive post filtering
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
US20150025894A1 (en) * 2013-07-16 2015-01-22 Electronics And Telecommunications Research Institute Method for encoding and decoding of multi channel audio signal, encoder and decoder
US9922660B2 (en) * 2013-11-29 2018-03-20 Sony Corporation Device for expanding frequency band of input signal via up-sampling
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
CA2985019C (en) * 2016-02-17 2022-05-03 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Post-processor, pre-processor, audio encoder, audio decoder and related methods for enhancing transient processing
US9838737B2 (en) * 2016-05-05 2017-12-05 Google Inc. Filtering wind noises in video content
CN116312601B (zh) * 2023-05-22 2023-08-29 北京探境科技有限公司 音频处理方法、装置、存储介质及电子设备

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Publication number Priority date Publication date Assignee Title
US20120173247A1 (en) * 2009-06-29 2012-07-05 Samsung Electronics Co., Ltd. Apparatus for encoding and decoding an audio signal using a weighted linear predictive transform, and a method for same
WO2013108343A1 (ja) * 2012-01-20 2013-07-25 パナソニック株式会社 音声復号装置及び音声復号方法
US9390721B2 (en) 2012-01-20 2016-07-12 Panasonic Intellectual Property Corporation Of America Speech decoding device and speech decoding method
WO2014034697A1 (ja) * 2012-08-29 2014-03-06 日本電信電話株式会社 復号方法、復号装置、プログラム、及びその記録媒体
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EP2869299A4 (en) * 2012-08-29 2016-06-01 Nippon Telegraph & Telephone DECODING METHOD, DECODING DEVICE, PROGRAM, AND RECORDING METHOD THEREOF
JPWO2014034697A1 (ja) * 2012-08-29 2016-08-08 日本電信電話株式会社 復号方法、復号装置、プログラム、及びその記録媒体
US9640190B2 (en) 2012-08-29 2017-05-02 Nippon Telegraph And Telephone Corporation Decoding method, decoding apparatus, program, and recording medium therefor

Also Published As

Publication number Publication date
EP2116997A4 (en) 2011-11-23
JP5164970B2 (ja) 2013-03-21
EP2116997A1 (en) 2009-11-11
US8554548B2 (en) 2013-10-08
US20100100373A1 (en) 2010-04-22
CN101617362B (zh) 2012-07-18
CN101617362A (zh) 2009-12-30
JPWO2008108082A1 (ja) 2010-06-10

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