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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decoded
unit
signal
lpc
sound source
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PCT/JP2008/000406
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English (en)
French (fr)
Inventor
Hiroyuki Ehara
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Priority to US12/528,878 priority Critical patent/US8554548B2/en
Priority to EP08710509A priority patent/EP2116997A4/en
Priority to CN200880005495XA priority patent/CN101617362B/zh
Priority to JP2009502460A priority patent/JP5164970B2/ja
Publication of WO2008108082A1 publication Critical patent/WO2008108082A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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 Ceased WO2008108082A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
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
CN200880005495XA CN101617362B (zh) 2007-03-02 2008-02-29 语音解码装置和语音解码方法
JP2009502460A JP5164970B2 (ja) 2007-03-02 2008-02-29 音声復号装置および音声復号方法

Applications Claiming Priority (2)

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JP2007-053531 2007-03-02
JP2007053531 2007-03-02

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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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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
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
JP2019500641A (ja) * 2016-02-17 2019-01-10 フラウンホファー ゲセルシャフト ツール フェールデルンク ダー アンゲヴァンテン フォルシュンク エー．ファオ． 過渡処理を高めるためのポストプロセッサ、プレプロセッサ、オーディオ符号器、オーディオ復号器、及び関連する方法

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US9253568B2 (en) * 2008-07-25 2016-02-02 Broadcom Corporation Single-microphone wind noise suppression
US8352279B2 (en) * 2008-09-06 2013-01-08 Huawei Technologies Co., Ltd. Efficient temporal envelope coding approach by prediction between low band signal and high band signal
EP3079153B1 (en) 2010-07-02 2018-08-01 Dolby International AB Audio decoding with selective post filtering
AR086199A1 (es) * 2011-04-22 2013-11-27 Wyeth Llc Composiciones relacionadas con una toxina de clostridium difficile mutante y sus metodos
KR102060208B1 (ko) * 2011-07-29 2019-12-27 디티에스 엘엘씨 적응적 음성 명료도 처리기
WO2013124712A1 (en) * 2012-02-24 2013-08-29 Nokia Corporation Noise adaptive post filtering
CN103928029B (zh) * 2013-01-11 2017-02-08 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
CN105745706B (zh) * 2013-11-29 2019-09-24 索尼公司 用于扩展频带的装置、方法和程序
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
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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
CN104584123A (zh) * 2012-08-29 2015-04-29 日本电信电话株式会社 解码方法、解码装置、程序、及其记录介质
EP2869299A4 (en) * 2012-08-29 2016-06-01 Nippon Telegraph & Telephone DECODING METHOD, DECODING DEVICE, PROGRAM AND RECORDING MEDIUM THEREFOR
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
CN104584123B (zh) * 2012-08-29 2018-02-13 日本电信电话株式会社 解码方法、以及解码装置
JP2019500641A (ja) * 2016-02-17 2019-01-10 フラウンホファー ゲセルシャフト ツール フェールデルンク ダー アンゲヴァンテン フォルシュンク エー．ファオ． 過渡処理を高めるためのポストプロセッサ、プレプロセッサ、オーディオ符号器、オーディオ復号器、及び関連する方法

Also Published As

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

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