DE69418994T2 - Kodier- und Dekodierapparat welcher keine Tonqualität verschlechtert, sogar wenn ein Sinuswellen-Signal dekodiert wird - Google Patents

Kodier- und Dekodierapparat welcher keine Tonqualität verschlechtert, sogar wenn ein Sinuswellen-Signal dekodiert wird

Info

Publication number
DE69418994T2
DE69418994T2 DE69418994T DE69418994T DE69418994T2 DE 69418994 T2 DE69418994 T2 DE 69418994T2 DE 69418994 T DE69418994 T DE 69418994T DE 69418994 T DE69418994 T DE 69418994T DE 69418994 T2 DE69418994 T2 DE 69418994T2
Authority
DE
Germany
Prior art keywords
section
frequency band
encoding
block length
decoding apparatus
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69418994T
Other languages
English (en)
Other versions
DE69418994D1 (de
Inventor
Harumitsu Miyakawa
Shuichi Kawama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of DE69418994D1 publication Critical patent/DE69418994D1/de
Publication of DE69418994T2 publication Critical patent/DE69418994T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/665—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using psychoacoustic properties of the ear, e.g. masking effect
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/0212—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 using orthogonal transformation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/002—Dynamic bit allocation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
DE69418994T 1993-11-25 1994-11-25 Kodier- und Dekodierapparat welcher keine Tonqualität verschlechtert, sogar wenn ein Sinuswellen-Signal dekodiert wird Expired - Fee Related DE69418994T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP29501593 1993-11-25
JP06263562A JP3131542B2 (ja) 1993-11-25 1994-10-27 符号化復号化装置

Publications (2)

Publication Number Publication Date
DE69418994D1 DE69418994D1 (de) 1999-07-15
DE69418994T2 true DE69418994T2 (de) 1999-12-02

Family

ID=26546075

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69418994T Expired - Fee Related DE69418994T2 (de) 1993-11-25 1994-11-25 Kodier- und Dekodierapparat welcher keine Tonqualität verschlechtert, sogar wenn ein Sinuswellen-Signal dekodiert wird

Country Status (4)

Country Link
US (1) US5684922A (de)
EP (1) EP0661821B1 (de)
JP (1) JP3131542B2 (de)
DE (1) DE69418994T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10119980C1 (de) * 2001-04-24 2002-11-07 Bosch Gmbh Robert Verfahren zur Codierung von Audiodaten

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2842276B2 (ja) * 1995-02-24 1998-12-24 日本電気株式会社 広帯域信号符号化装置
JP3491425B2 (ja) * 1996-01-30 2004-01-26 ソニー株式会社 信号符号化方法
DE19629132A1 (de) * 1996-07-19 1998-01-22 Daimler Benz Ag Verfahren zur Verringerung von Störungen eines Sprachsignals
JP3328532B2 (ja) 1997-01-22 2002-09-24 シャープ株式会社 デジタルデータの符号化方法
FR2768547B1 (fr) * 1997-09-18 1999-11-19 Matra Communication Procede de debruitage d'un signal de parole numerique
JPH11143497A (ja) 1997-11-10 1999-05-28 Matsushita Electric Ind Co Ltd 圧縮されたテーブルを用いてサブバンドごとに量子化係数を復号化する方法
US6134274A (en) * 1997-12-23 2000-10-17 At&T Corp Method and apparatus for allocating data for transmission via discrete multiple tones
DE69940918D1 (de) * 1998-02-26 2009-07-09 Sony Corp Verfahren und vorrichtung zur kodierung/dekodierung sowie programmaufzeichnungsträger und datenaufzeichnungsträger
US6115689A (en) * 1998-05-27 2000-09-05 Microsoft Corporation Scalable audio coder and decoder
JP3515903B2 (ja) * 1998-06-16 2004-04-05 松下電器産業株式会社 オーディオ符号化のための動的ビット割り当て方法及び装置
JP3784993B2 (ja) * 1998-06-26 2006-06-14 株式会社リコー 音響信号の符号化・量子化方法
US7058572B1 (en) * 2000-01-28 2006-06-06 Nortel Networks Limited Reducing acoustic noise in wireless and landline based telephony
US6671667B1 (en) * 2000-03-28 2003-12-30 Tellabs Operations, Inc. Speech presence measurement detection techniques
US7508944B1 (en) * 2000-06-02 2009-03-24 Digimarc Corporation Using classification techniques in digital watermarking
CN1338834A (zh) * 2000-08-19 2002-03-06 华为技术有限公司 基于网络协议的低速语音编码方法
JP4618873B2 (ja) * 2000-11-24 2011-01-26 パナソニック株式会社 オーディオ信号符号化方法、オーディオ信号符号化装置、音楽配信方法、および、音楽配信システム
US7930170B2 (en) * 2001-01-11 2011-04-19 Sasken Communication Technologies Limited Computationally efficient audio coder
US7328151B2 (en) * 2002-03-22 2008-02-05 Sound Id Audio decoder with dynamic adjustment of signal modification
KR100462611B1 (ko) * 2002-06-27 2004-12-20 삼성전자주식회사 하모닉 성분을 이용한 오디오 코딩방법 및 장치
CN1666571A (zh) * 2002-07-08 2005-09-07 皇家飞利浦电子股份有限公司 音频处理
JP4009781B2 (ja) * 2003-10-27 2007-11-21 カシオ計算機株式会社 音声処理装置及び音声符号化方法
US7406412B2 (en) * 2004-04-20 2008-07-29 Dolby Laboratories Licensing Corporation Reduced computational complexity of bit allocation for perceptual coding
JP2008503766A (ja) * 2004-06-21 2008-02-07 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ オーディオエンコードの方法
KR100682890B1 (ko) * 2004-09-08 2007-02-15 삼성전자주식회사 비트량 고속제어가 가능한 오디오 부호화 방법 및 장치
JP4725127B2 (ja) * 2005-02-16 2011-07-13 ソニー株式会社 復号装置および方法、記録媒体、並びにプログラム
US7627481B1 (en) * 2005-04-19 2009-12-01 Apple Inc. Adapting masking thresholds for encoding a low frequency transient signal in audio data
KR100851970B1 (ko) * 2005-07-15 2008-08-12 삼성전자주식회사 오디오 신호의 중요주파수 성분 추출방법 및 장치와 이를이용한 저비트율 오디오 신호 부호화/복호화 방법 및 장치
JP2007264154A (ja) * 2006-03-28 2007-10-11 Sony Corp オーディオ信号符号化方法、オーディオ信号符号化方法のプログラム、オーディオ信号符号化方法のプログラムを記録した記録媒体及びオーディオ信号符号化装置
US8718121B2 (en) * 2006-10-12 2014-05-06 Jds Uniphase Corporation Test device and method of detecting an imbalance in a power level of a channel
JP4984983B2 (ja) * 2007-03-09 2012-07-25 富士通株式会社 符号化装置および符号化方法
WO2008146183A1 (en) * 2007-05-29 2008-12-04 Nxp B.V. Device and method to reduce power consumption
GB2454208A (en) * 2007-10-31 2009-05-06 Cambridge Silicon Radio Ltd Compression using a perceptual model and a signal-to-mask ratio (SMR) parameter tuned based on target bitrate and previously encoded data
JP5262171B2 (ja) 2008-02-19 2013-08-14 富士通株式会社 符号化装置、符号化方法および符号化プログラム
CN102171950B (zh) * 2008-10-01 2014-02-26 空中客车作业有限公司 数字信号处理器、通信设备、通信系统及操作数字信号处理器的方法
US9881625B2 (en) * 2011-04-20 2018-01-30 Panasonic Intellectual Property Corporation Of America Device and method for execution of huffman coding
US9183846B2 (en) * 2011-12-02 2015-11-10 Hytera Communications Corp., Ltd. Method and device for adaptively adjusting sound effect
JP6098038B2 (ja) * 2012-03-19 2017-03-22 富士通株式会社 音声補正装置、音声補正方法及び音声補正用コンピュータプログラム
CN110706715B (zh) * 2012-03-29 2022-05-24 华为技术有限公司 信号编码和解码的方法和设备
JP6179087B2 (ja) * 2012-10-24 2017-08-16 富士通株式会社 オーディオ符号化装置、オーディオ符号化方法、オーディオ符号化用コンピュータプログラム
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
CN104934034B (zh) 2014-03-19 2016-11-16 华为技术有限公司 用于信号处理的方法和装置
JP2015227912A (ja) * 2014-05-30 2015-12-17 富士通株式会社 オーディオ符号化装置、および方法
JP6398607B2 (ja) * 2014-10-24 2018-10-03 富士通株式会社 オーディオ符号化装置、オーディオ符号化方法、オーディオ符号化プログラム
US9704497B2 (en) 2015-07-06 2017-07-11 Apple Inc. Method and system of audio power reduction and thermal mitigation using psychoacoustic techniques
WO2021012872A1 (zh) 2019-07-25 2021-01-28 腾讯科技（深圳）有限公司 一种编码参数调控方法、装置、设备及存储介质
CN110557129B (zh) * 2019-09-12 2021-04-09 北京维普无限智能技术有限公司 一种多码制无线信号静噪方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8700985A (nl) * 1987-04-27 1988-11-16 Philips Nv Systeem voor sub-band codering van een digitaal audiosignaal.
NL8901032A (nl) * 1988-11-10 1990-06-01 Philips Nv Coder om extra informatie op te nemen in een digitaal audiosignaal met een tevoren bepaald formaat, een decoder om deze extra informatie uit dit digitale signaal af te leiden, een inrichting voor het opnemen van een digitaal signaal op een registratiedrager, voorzien van de coder, en een registratiedrager verkregen met deze inrichting.
CA2140678C (en) * 1989-01-27 2001-05-01 Louis Dunn Fielder Coder and decoder for high-quality audio
US5142656A (en) * 1989-01-27 1992-08-25 Dolby Laboratories Licensing Corporation Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio
ES2109296T3 (es) * 1989-01-27 1998-01-16 Dolby Lab Licensing Corp Codificador, descodificador y codificador/descodificador con transformacion de baja frecuencia de bits para audioinformacion de alta calidad.
US5109417A (en) * 1989-01-27 1992-04-28 Dolby Laboratories Licensing Corporation Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio
US5185800A (en) * 1989-10-13 1993-02-09 Centre National D'etudes Des Telecommunications Bit allocation device for transformed digital audio broadcasting signals with adaptive quantization based on psychoauditive criterion
JP2870050B2 (ja) * 1989-10-18 1999-03-10 ソニー株式会社 ディジタルデータの高能率符号化方法
JP2861238B2 (ja) * 1990-04-20 1999-02-24 ソニー株式会社 ディジタル信号符号化方法
US5206884A (en) * 1990-10-25 1993-04-27 Comsat Transform domain quantization technique for adaptive predictive coding
US5365553A (en) * 1990-11-30 1994-11-15 U.S. Philips Corporation Transmitter, encoding system and method employing use of a bit need determiner for subband coding a digital signal
EP0506394A2 (de) * 1991-03-29 1992-09-30 Sony Corporation Einrichtung zur Kodierung von digitalen Signalen
JPH04302531A (ja) * 1991-03-29 1992-10-26 Sony Corp ディジタルデータの高能率符号化方法
DE69217590T2 (de) * 1991-07-31 1997-06-12 Matsushita Electric Ind Co Ltd Verfahren und Einrichtung zur Kodierung eines digitalen Audiosignals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10119980C1 (de) * 2001-04-24 2002-11-07 Bosch Gmbh Robert Verfahren zur Codierung von Audiodaten

Also Published As

Publication number Publication date
JPH07202823A (ja) 1995-08-04
EP0661821B1 (de) 1999-06-09
EP0661821A1 (de) 1995-07-05
JP3131542B2 (ja) 2001-02-05
DE69418994D1 (de) 1999-07-15
US5684922A (en) 1997-11-04

Similar Documents

Publication Publication Date Title
DE69418994T2 (de) Kodier- und Dekodierapparat welcher keine Tonqualität verschlechtert, sogar wenn ein Sinuswellen-Signal dekodiert wird
DK0514949T3 (da) Adaptiv bitallokering for audiokoder og -dekoder
DE69329796T2 (de) Verfahren zur kodierung, dekodierung und kompression von audiodaten
KR920704539A (ko) 다차원 음장용 인코우더/디코우더
KR930024306A (ko) 데이타 압축 신장 장치
KR100968057B1 (ko) 부호화 방법 및 장치, 및 복호 방법 및 장치
RU94046112A (ru) Способ сокращения числа данных при передаче и/или накоплении цифровых сигналов, поступающих из нескольких взаимосвязанных каналов
KR960002293A (ko) 정보 인코딩 방법과 장치 및 정보 디코딩 방법과 장치
KR960016631A (ko) 정보부호화 방법과 장치, 정보복호화 방법과 장치 및 기록매체
KR970029015A (ko) 정보부호화장치 및 방법, 정보해독화장치 및 방법, 및 정보기록매체
KR930005381A (ko) 고능률 부호화 장치 및 복호화 장치
KR930015378A (ko) 낮은 전송률에서 음성신호 부호화 방법
KR0155823B1 (ko) 서브밴드코딩의 비트할당방법
KR960011953A (ko) 적응적 디지탈 오디오 부호화 장치
JPH06348294A (ja) 帯域分割符号化装置
KR960027868A (ko) 엠펙(mpeg) 오디오의 비트율 변환방법

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee