WO2009038158A1 - 音声復号装置、音声復号方法、プログラム及び携帯端末 - Google Patents

音声復号装置、音声復号方法、プログラム及び携帯端末 Download PDF

Info

Publication number
WO2009038158A1
WO2009038158A1 PCT/JP2008/066948 JP2008066948W WO2009038158A1 WO 2009038158 A1 WO2009038158 A1 WO 2009038158A1 JP 2008066948 W JP2008066948 W JP 2008066948W WO 2009038158 A1 WO2009038158 A1 WO 2009038158A1
Authority
WO
WIPO (PCT)
Prior art keywords
audio decoding
signal
output
audio
mobile terminal
Prior art date
Application number
PCT/JP2008/066948
Other languages
English (en)
French (fr)
Inventor
Kazunori Ozawa
Toshiyuki Nomura
Hironori Ito
Original Assignee
Nec Corporation
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 Nec Corporation filed Critical Nec Corporation
Priority to JP2009533189A priority Critical patent/JPWO2009038158A1/ja
Publication of WO2009038158A1 publication Critical patent/WO2009038158A1/ja

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
    • 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
    • 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
    • G10L21/0208—Noise filtering
    • G10L21/0264—Noise filtering characterised by the type of parameter measurement, e.g. correlation techniques, zero crossing techniques or predictive techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/72442—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality for playing music files

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (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)
  • Telephone Function (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

　高効率の音声符号化方式で携帯端末に対し、音楽やメロディの配信を行う際の音質の劣化を軽減する。音声復号装置は、圧縮符号化された入力ビットストリームを復号し出力する音声復号化処理部１１０と、前記音声復号部の出力信号の信号成分のうち、聴覚マスキング効果により聴覚的に不要となる信号成分を抑圧して出力する聴覚マスキング整形処理部１２０と、復号信号の特徴を分析し、前記周波数変換部に出力するか、前記音声復号化処理部の出力をそのまま出力するかを判別する切替部２５０＿１、２５０＿２と、を備える（図１）。
PCT/JP2008/066948 2007-09-21 2008-09-19 音声復号装置、音声復号方法、プログラム及び携帯端末 WO2009038158A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009533189A JPWO2009038158A1 (ja) 2007-09-21 2008-09-19 音声復号装置、音声復号方法、プログラム及び携帯端末

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007245546 2007-09-21
JP2007-245546 2007-09-21

Publications (1)

Publication Number Publication Date
WO2009038158A1 true WO2009038158A1 (ja) 2009-03-26

Family

ID=40467967

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/066948 WO2009038158A1 (ja) 2007-09-21 2008-09-19 音声復号装置、音声復号方法、プログラム及び携帯端末

Country Status (2)

Country Link
JP (1) JPWO2009038158A1 (ja)
WO (1) WO2009038158A1 (ja)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06332496A (ja) * 1993-05-21 1994-12-02 Mitsubishi Electric Corp 音声符号化装置、音声復号化装置、音声後処理装置及びこれらの方法
JPH07221650A (ja) * 1994-02-05 1995-08-18 Sony Corp 情報符号化方法及び装置並びに情報復号化方法及び装置
JPH0950298A (ja) * 1995-08-07 1997-02-18 Mitsubishi Electric Corp 音声符号化装置及び音声復号化装置
JP2000315099A (ja) * 1999-03-02 2000-11-14 Emudasu Systems:Kk データ圧縮装置及び音データ処理方法
WO2004090869A1 (ja) * 2003-04-08 2004-10-21 Nec Corporation 符号変換方法及び装置
WO2006041055A1 (ja) * 2004-10-13 2006-04-20 Matsushita Electric Industrial Co., Ltd. スケーラブル符号化装置、スケーラブル復号装置及びスケーラブル符号化方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06332496A (ja) * 1993-05-21 1994-12-02 Mitsubishi Electric Corp 音声符号化装置、音声復号化装置、音声後処理装置及びこれらの方法
JPH07221650A (ja) * 1994-02-05 1995-08-18 Sony Corp 情報符号化方法及び装置並びに情報復号化方法及び装置
JPH0950298A (ja) * 1995-08-07 1997-02-18 Mitsubishi Electric Corp 音声符号化装置及び音声復号化装置
JP2000315099A (ja) * 1999-03-02 2000-11-14 Emudasu Systems:Kk データ圧縮装置及び音データ処理方法
WO2004090869A1 (ja) * 2003-04-08 2004-10-21 Nec Corporation 符号変換方法及び装置
WO2006041055A1 (ja) * 2004-10-13 2006-04-20 Matsushita Electric Industrial Co., Ltd. スケーラブル符号化装置、スケーラブル復号装置及びスケーラブル符号化方法

Also Published As

Publication number Publication date
JPWO2009038158A1 (ja) 2011-01-06

Similar Documents

Publication Publication Date Title
WO2010008175A3 (ko) 음성/오디오 통합 신호의 부호화/복호화 장치
PL1866912T3 (pl) Kodowanie wielokanałowego sygnału audio
WO2008016935A3 (en) Systems, methods, and apparatus for wideband encoding and decoding of inactive frames
TW200737738A (en) Apparatus and method for encoding and decoding signal
WO2010008185A3 (en) Method and apparatus to encode and decode an audio/speech signal
HK1073916A1 (en) Low bit-rate audio coding
TW200738040A (en) Method and apparatus for processing a audio signal
HK1111855A1 (en) Device and method for generating an encoded stereo signal
ES2405311T3 (es) Aparato para restaurar una señal de audio multicanal usando un decodificador de MPEG surround
DE602005010894D1 (de) Diffusschall-einhüllenden-formgebung für binaurale hinweis-codierungsverfahren und dergleichen
BRPI0306434A8 (pt) Aparelho e método de decodificação de áudio
TW200609500A (en) Supporting a switch between audio coder modes
ATE490454T1 (de) Verfahren zum umschalten der raten- und bandbreitenskalierbaren audiodecodierungsrate
WO2008022176A3 (en) Packet loss concealment for sub-band predictive coding based on extrapolation of full-band audio waveform
HK1144043A1 (zh) 多聲道音頻信號表示方法
ATE511179T1 (de) Hierarchischen audio-kodierung/-dekodierung
EP1677289A3 (en) High-band speech coding apparatus and high-band speech decoding apparatus in a wide-band speech coding/decoding system and high-band speech coding and decoding methods performed by the apparatuses
ATE424606T1 (de) Individuelle kanaltemporäre enveloppenformung für binaurale hinweiscodierungsverfahren und dergleichen
TW200611242A (en) Coding reverberant sound signals
TW200708108A (en) Decoder architecture systems, apparatus and methods
CN108718361B (zh) 一种音频文件播放方法及无线接听设备
WO2002025953A3 (en) Video and audio transcoder
WO2009038158A1 (ja) 音声復号装置、音声復号方法、プログラム及び携帯端末
CN102918589B (zh) 提供从以低比特率编码和解码的水印的音频或视频信号导出的水印的已解码音频或视频信号
WO2009038170A1 (ja) 音声処理装置、音声処理方法、プログラム及び音楽・メロディ配信システム

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08831687

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2009533189

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08831687

Country of ref document: EP

Kind code of ref document: A1