Nothing Special   »   [go: up one dir, main page]

WO2009038115A1 - 音声符号化装置、音声符号化方法及びプログラム - Google Patents

音声符号化装置、音声符号化方法及びプログラム Download PDF

Info

Publication number
WO2009038115A1
WO2009038115A1 PCT/JP2008/066828 JP2008066828W WO2009038115A1 WO 2009038115 A1 WO2009038115 A1 WO 2009038115A1 JP 2008066828 W JP2008066828 W JP 2008066828W WO 2009038115 A1 WO2009038115 A1 WO 2009038115A1
Authority
WO
WIPO (PCT)
Prior art keywords
audio encoding
audio
signal
auditory masking
program
Prior art date
Application number
PCT/JP2008/066828
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 JP2009533171A priority Critical patent/JPWO2009038115A1/ja
Publication of WO2009038115A1 publication Critical patent/WO2009038115A1/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
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (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。音声符号化装置は、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、前記聴覚マスキング整形処理部の出力信号を音声圧縮符号化してビットストリームを出力する音声符号化処理を実行する音声符号化処理部１３０と、を備える（図１）。
PCT/JP2008/066828 2007-09-21 2008-09-18 音声符号化装置、音声符号化方法及びプログラム WO2009038115A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009533171A JPWO2009038115A1 (ja) 2007-09-21 2008-09-18 音声符号化装置、音声符号化方法及びプログラム

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007245547 2007-09-21
JP2007-245547 2007-09-21

Publications (1)

Publication Number Publication Date
WO2009038115A1 true WO2009038115A1 (ja) 2009-03-26

Family

ID=40467925

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/066828 WO2009038115A1 (ja) 2007-09-21 2008-09-18 音声符号化装置、音声符号化方法及びプログラム

Country Status (2)

Country Link
JP (1) JPWO2009038115A1 (ja)
WO (1) WO2009038115A1 (ja)

Citations (7)

* 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
WO1996005592A1 (en) * 1994-08-10 1996-02-22 Qualcomm Incorporated Method and apparatus for selecting an encoding rate in a variable rate vocoder
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
WO2005112003A1 (en) * 2004-05-17 2005-11-24 Nokia Corporation Audio encoding with different coding frame lengths

Patent Citations (7)

* 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
WO1996005592A1 (en) * 1994-08-10 1996-02-22 Qualcomm Incorporated Method and apparatus for selecting an encoding rate in a variable rate vocoder
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
WO2005112003A1 (en) * 2004-05-17 2005-11-24 Nokia Corporation Audio encoding with different coding frame lengths

Also Published As

Publication number Publication date
JPWO2009038115A1 (ja) 2011-01-06

Similar Documents

Publication Publication Date Title
MX2009005159A (es) Un metodo y un aparato para descodificar una señal de audio.
WO2010008175A3 (ko) 음성/오디오 통합 신호의 부호화/복호화 장치
TW200738040A (en) Method and apparatus for processing a audio signal
MX2008013073A (es) Metodos y aparatos para codificar y decodificar señales de audio basadas en objeto.
MX2010005679A (es) Metodo y aparato para extension de ancho de banda de señal de audio.
HK1154696A1 (en) A signal process method, process device and an audio decoder
ATE490454T1 (de) Verfahren zum umschalten der raten- und bandbreitenskalierbaren audiodecodierungsrate
MX2012006979A (es) Un aparato y metodo para convertir una primera señal de audio parametrico espacial en una segunda señal de audio parametrico espacial.
WO2006126855A3 (en) Method and apparatus for decoding audio signal
PL2056292T3 (pl) Sposób oraz urządzenie do uzyskiwania współczynnika tłumienia
WO2007087408A3 (en) Method and arrangement for feeding chemicals into a process stream
WO2010087614A3 (ko) 오디오 신호의 부호화 및 복호화 방법 및 그 장치
WO2007047037A3 (en) An adaptive equalizer for a coded speech signal
JP2009500658A5 (ja)
DE602007005806D1 (de) Audioverarbeitung in kommunikationsendgeräten
PL2080195T3 (pl) Synteza utraconych bloków cyfrowego sygnału akustycznego
WO2009146047A3 (en) Adaptive primary-ambient decomposition of audio signals
ATE478525T1 (de) Kompression und mischen für hörgeräte
WO2010005254A3 (ko) 부호화 방식 결정 방법 및 장치
WO2007129243A3 (en) Synthesizing comfort noise
WO2009011102A1 (ja) スピーカ用振動板、その振動板を用いたスピーカならびにこのスピーカを用いた装置
WO2008011433A3 (en) Styrenated terpene resin as well as methods of making and using the same
MX2008002760A (es) Metodo para decodificar una senal de audio.
TW200733706A (en) Method, system and apparatus for providing ring back tone alternative service by using intelligent network
WO2008102527A1 (ja) マルチチャンネル復号装置、マルチチャンネル復号方法、プログラム及び半導体集積回路

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: 08832353

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2009533171

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: 08832353

Country of ref document: EP

Kind code of ref document: A1