ES2038739T3 - Sistema para codificacion en sub-banda de una senal digital de audio. - Google Patents

Sistema para codificacion en sub-banda de una senal digital de audio.

Info

Publication number
ES2038739T3
ES2038739T3 ES198888200748T ES88200748T ES2038739T3 ES 2038739 T3 ES2038739 T3 ES 2038739T3 ES 198888200748 T ES198888200748 T ES 198888200748T ES 88200748 T ES88200748 T ES 88200748T ES 2038739 T3 ES2038739 T3 ES 2038739T3
Authority
ES
Spain
Prior art keywords
coder
subband
audio signal
signal
block
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 - Lifetime
Application number
ES198888200748T
Other languages
English (en)
Inventor
Raymond Nicolaas Johan Veldhuis
Robbert Gerbrand Van Der Waal
Marcel Breeuwer
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of ES2038739T3 publication Critical patent/ES2038739T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • 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
    • 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
    • H04B1/667—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 a division in frequency subbands
    • 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
    • G10L19/002—Dynamic bit allocation
    • 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
    • G10L19/0204—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 subband decomposition
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

UN SISTEMA PARA CIFRAR SUBBANDAS DE UNA SEÑAL X(K) DE AUDIO DIGITAL INCLUYE EN EL CIFRADOR (1) UN BANCO DE FILTRO (3) PARA DIVIDIR LA BANDA DE SEÑAL AUDIO, CON MUESTREO DE REDUCCION PROPORCIONADA, EN SUBBANDAS (P=1...P) DE AUDIO DE BANDA CRITICO APROXIMADAMENTE Y EN EL DECODIFICADOR (Z) UN BANCO DE FILTRO (5) PARA UNIR ESAS SUBBANDAS, CON MUESTREO DE INCREMENTO PROPORCIONADO. PARA CADA SUBBANDA (P) EL CODIFICADOR (1) COMPRENDE UN DETECTOR (7(P)) PARA DETERMINAR UN PARAMETRO G (P;M) REPRESENTATIVO DEL NIVEL DE SEÑAL EN UN BLOQUE (P;M) DE M MUESTRAS DE LA SEÑAL DE SUBBANDA XP(K) COMO TAMBIEN UN CUANTIFICADOR (8(P)) PARA PREPARADO EL BLOQUE CUANTIFICAR ESTA SEÑAL DE SUBBANDA EN RESPUESTA AL PARAMETRO G (P;M) Y EL DECODIFICADOR (2) COMPRENDE UN DECUANTIFICADOR 9(P) PARA EL PREPARADO DEL BLOQUE DECUANTIFICAR LA SEÑAL DE SUBBANDA CUANTIFICADA SP(K) EN RESPUESTA AL PARAMETRO G (P;M). LAS CARACTERISTICAS CUANTIFICADAS RELACIONADAS A LA CURVA DE ENMASCARAR RUIDO DEL SISTEMA AUDITIVO HUMANO , QUE SEDEBE A QUE UNA GRAN CUALIDAD DE LA REPLICA X(K) DE LA SEÑAL AUDIO X(K) ES ALCANZADO CON UN NUMERO MEDIO DE APROXIMADAMENTE 2,5 BITS POR MUESTRA PARA REPRESENTAR LA SEÑAL DE SALIDA DEL CODIFICADOR (1). LA AUDIBILIDAD OCASIONAL DE CUANTIFICAR RUIDO EN ESTA REPICLA X (K) ES REDUCIDA EFECTIVAMENTE EN QUE EL CODIFICADOR (1) Y DECODIFICADOR (2) CONTIENEN ELEMENTOS DE ASIGNACION DE BITS IDENTICOS (23, 24) SENSIBLES A UN GRUPO DE PARAMETROS G(P;M) PARA EL GRUPO MAS ALTO DE SUBBANDAS (PIM (MENOR O IGUAL) P (MENOR O IGUAL) ) SIN UNA VENTANA DE ASIGNACION (FIG. 5) PARA ASIGNAR UN NUMERO DE B (P;M) BITS POR MUESTRA DESDE UN NUMERO PREDETERMINADO FIJADO DE B BITS PARA ESTA VENTANA DE ASIGNACION AL CUANTIFICADOR (8(P)) Y EL DECUANTIFICADOR (9(P)) PARA EL BLOQUE (P;M) DE LA SEÑAL DE SUBBANDA X P (K) Y SP (K), RESPECTIVAMENTE.
ES198888200748T 1987-04-27 1988-04-20 Sistema para codificacion en sub-banda de una senal digital de audio. Expired - Lifetime ES2038739T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8700985A NL8700985A (nl) 1987-04-27 1987-04-27 Systeem voor sub-band codering van een digitaal audiosignaal.

Publications (1)

Publication Number Publication Date
ES2038739T3 true ES2038739T3 (es) 1993-08-01

Family

ID=19849916

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198888200748T Expired - Lifetime ES2038739T3 (es) 1987-04-27 1988-04-20 Sistema para codificacion en sub-banda de una senal digital de audio.

Country Status (9)

Country Link
US (2) US4896362A (es)
EP (1) EP0289080B1 (es)
JP (1) JP2732854B2 (es)
KR (1) KR970008640B1 (es)
AT (1) ATE85481T1 (es)
DE (1) DE3878017T2 (es)
ES (1) ES2038739T3 (es)
HK (1) HK88194A (es)
NL (1) NL8700985A (es)

Families Citing this family (150)

* 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.
JP2597613B2 (ja) * 1987-12-18 1997-04-09 株式会社東芝 適応ビット割当の補正方法
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.
USRE40280E1 (en) 1988-12-30 2008-04-29 Lucent Technologies Inc. Rate loop processor for perceptual encoder/decoder
US5752225A (en) * 1989-01-27 1998-05-12 Dolby Laboratories Licensing Corporation Method and apparatus for split-band encoding and split-band decoding of audio information using adaptive bit allocation to adjacent subbands
DE69026278T3 (de) * 1989-01-27 2002-08-08 Dolby Lab Licensing Corp Adaptiv Bitzuordnung für Audio-Koder und Dekoder
US5222189A (en) * 1989-01-27 1993-06-22 Dolby Laboratories Licensing Corporation Low time-delay transform coder, decoder, and encoder/decoder for high-quality audio
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
AU643677B2 (en) * 1989-01-27 1993-11-25 Dolby Laboratories Licensing Corporation Low time-delay transform coder, decoder, and encoder/decoder for high-quality audio
DE3943880B4 (de) * 1989-04-17 2008-07-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Digitales Codierverfahren
US6289308B1 (en) 1990-06-01 2001-09-11 U.S. Philips Corporation Encoded wideband digital transmission signal and record carrier recorded with such a signal
EP0400222A1 (en) * 1989-06-02 1990-12-05 ETAT FRANCAIS représenté par le Ministère des Postes, des Télécommunications et de l'Espace Digital transmission system using subband coding of a digital signal
NL9000338A (nl) * 1989-06-02 1991-01-02 Koninkl Philips Electronics Nv Digitaal transmissiesysteem, zender en ontvanger te gebruiken in het transmissiesysteem en registratiedrager verkregen met de zender in de vorm van een optekeninrichting.
US5054075A (en) * 1989-09-05 1991-10-01 Motorola, Inc. Subband decoding method and apparatus
US5115240A (en) * 1989-09-26 1992-05-19 Sony Corporation Method and apparatus for encoding voice signals divided into a plurality of frequency bands
JPH03117919A (ja) * 1989-09-30 1991-05-20 Sony Corp ディジタル信号符号化装置
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
JPH03139700A (ja) 1989-10-25 1991-06-13 Sony Corp オーディオ信号再生装置
US6695477B1 (en) * 1989-10-25 2004-02-24 Sony Corporation Audio signal reproducing apparatus
EP1587219A3 (en) * 1990-02-13 2006-06-28 Koninklijke Philips Electronics N.V. Record carrier having an encoded wideband digital audio signal recorded on it
JP2560873B2 (ja) * 1990-02-28 1996-12-04 日本ビクター株式会社 直交変換符号化復号化方法
JP2913731B2 (ja) * 1990-03-07 1999-06-28 ソニー株式会社 ディジタルデータの高能率符号化方法
US5502789A (en) * 1990-03-07 1996-03-26 Sony Corporation Apparatus for encoding digital data with reduction of perceptible noise
NL9000635A (nl) * 1990-03-20 1991-10-16 Philips Nv Digitaal opteken- en weergavesysteem.
CN1062963C (zh) * 1990-04-12 2001-03-07 多尔拜实验特许公司 用于产生高质量声音信号的解码器和编码器
US5367608A (en) * 1990-05-14 1994-11-22 U.S. Philips Corporation Transmitter, encoding system and method employing use of a bit allocation unit for subband coding a digital signal
JP2751564B2 (ja) * 1990-05-25 1998-05-18 ソニー株式会社 ディジタル信号符号化装置
US5388181A (en) * 1990-05-29 1995-02-07 Anderson; David J. Digital audio compression system
JP2841765B2 (ja) * 1990-07-13 1998-12-24 日本電気株式会社 適応ビット割当て方法及び装置
JP2906646B2 (ja) * 1990-11-09 1999-06-21 松下電器産業株式会社 音声帯域分割符号化装置
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
US5274740A (en) * 1991-01-08 1993-12-28 Dolby Laboratories Licensing Corporation Decoder for variable number of channel presentation of multidimensional sound fields
NL9100173A (nl) * 1991-02-01 1992-09-01 Philips Nv Subbandkodeerinrichting, en een zender voorzien van de kodeerinrichting.
DE4203436A1 (de) * 1991-02-06 1992-08-13 Koenig Florian Datenreduzierte sprachkommunikation
NL9100285A (nl) * 1991-02-19 1992-09-16 Koninkl Philips Electronics Nv Transmissiesysteem, en ontvanger te gebruiken in het transmissiesysteem.
US5559900A (en) * 1991-03-12 1996-09-24 Lucent Technologies Inc. Compression of signals for perceptual quality by selecting frequency bands having relatively high energy
EP0506394A2 (en) * 1991-03-29 1992-09-30 Sony Corporation Coding apparatus for digital signals
ZA921988B (en) * 1991-03-29 1993-02-24 Sony Corp High efficiency digital data encoding and decoding apparatus
JP3134337B2 (ja) * 1991-03-30 2001-02-13 ソニー株式会社 ディジタル信号符号化方法
JP3134338B2 (ja) * 1991-03-30 2001-02-13 ソニー株式会社 ディジタル音声信号符号化方法
JPH04323700A (ja) * 1991-04-23 1992-11-12 Sanyo Electric Co Ltd 音声信号記録装置
GB2257606B (en) * 1991-06-28 1995-01-18 Sony Corp Recording and/or reproducing apparatuses and signal processing methods for compressed data
DE4125050C2 (de) * 1991-07-29 1993-10-07 Inst Rundfunktechnik Gmbh Verfahren zum Erkennen von Übertragungsfehlern eines digitalisierten, bitsparend codierten Tonsignals
GB2258372B (en) * 1991-08-02 1995-05-31 Sony Corp Apparatus for and methods of recording and/or reproducing digital data
ES2164640T3 (es) * 1991-08-02 2002-03-01 Sony Corp Codificador digital con asignacion dinamica de bits de cuantificacion.
KR100263599B1 (ko) * 1991-09-02 2000-08-01 요트.게.아. 롤페즈 인코딩 시스템
SK273092A3 (en) * 1991-09-17 1994-11-09 Koninkl Philips Electronics Nv Device for winning belt carriers of record, carrier of record and reproduction device
EP0535889B1 (en) * 1991-09-30 1998-11-11 Sony Corporation Method and apparatus for audio data compression
DE4136825C1 (es) * 1991-11-08 1993-03-18 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De
JP3134455B2 (ja) * 1992-01-29 2001-02-13 ソニー株式会社 高能率符号化装置及び方法
DE69331166T2 (de) * 1992-02-03 2002-08-22 Koninkl Philips Electronics Nv Übertragung von digitalen Breitbandsignalen
CA2088082C (en) * 1992-02-07 1999-01-19 John Hartung Dynamic bit allocation for three-dimensional subband video coding
EP0559348A3 (en) 1992-03-02 1993-11-03 AT&T Corp. Rate control loop processor for perceptual encoder/decoder
CA2090052C (en) * 1992-03-02 1998-11-24 Anibal Joao De Sousa Ferreira Method and apparatus for the perceptual coding of audio signals
TW235392B (es) * 1992-06-02 1994-12-01 Philips Electronics Nv
TW221836B (es) * 1992-06-09 1994-03-21 Philips Electronics Nv
JP3153933B2 (ja) * 1992-06-16 2001-04-09 ソニー株式会社 データ符号化装置及び方法並びにデータ復号化装置及び方法
US5513297A (en) * 1992-07-10 1996-04-30 At&T Corp. Selective application of speech coding techniques to input signal segments
JP3189401B2 (ja) * 1992-07-29 2001-07-16 ソニー株式会社 音声データ符号化方法及び音声データ符号化装置
JP3127600B2 (ja) * 1992-09-11 2001-01-29 ソニー株式会社 ディジタル信号復号化装置及び方法
JP3508146B2 (ja) * 1992-09-11 2004-03-22 ソニー株式会社 ディジタル信号符号化復号化装置、ディジタル信号符号化装置及びディジタル信号復号化装置
US6252909B1 (en) * 1992-09-21 2001-06-26 Aware, Inc. Multi-carrier transmission system utilizing channels of different bandwidth
US5408580A (en) * 1992-09-21 1995-04-18 Aware, Inc. Audio compression system employing multi-rate signal analysis
JP2524472B2 (ja) * 1992-09-21 1996-08-14 インターナショナル・ビジネス・マシーンズ・コーポレイション 電話回線利用の音声認識システムを訓練する方法
KR100188912B1 (ko) * 1992-09-21 1999-06-01 윤종용 서브밴드코딩의 비트재할당 방법
DE4236989C2 (de) * 1992-11-02 1994-11-17 Fraunhofer Ges Forschung Verfahren zur Übertragung und/oder Speicherung digitaler Signale mehrerer Kanäle
JP3343962B2 (ja) * 1992-11-11 2002-11-11 ソニー株式会社 高能率符号化方法及び装置
FI97758C (fi) * 1992-11-20 1997-02-10 Nokia Deutschland Gmbh Järjestelmä audiosignaalin käsittelemiseksi
JP3185413B2 (ja) * 1992-11-25 2001-07-09 ソニー株式会社 直交変換演算並びに逆直交変換演算方法及びその装置、ディジタル信号符号化及び／又は復号化装置
CA2106440C (en) * 1992-11-30 1997-11-18 Jelena Kovacevic Method and apparatus for reducing correlated errors in subband coding systems with quantizers
JP3123286B2 (ja) * 1993-02-18 2001-01-09 ソニー株式会社 ディジタル信号処理装置又は方法、及び記録媒体
JP3188013B2 (ja) * 1993-02-19 2001-07-16 松下電器産業株式会社 変換符号化装置のビット配分方法
JP3186307B2 (ja) * 1993-03-09 2001-07-11 ソニー株式会社 圧縮データ記録装置及び方法
JP3123290B2 (ja) * 1993-03-09 2001-01-09 ソニー株式会社 圧縮データ記録装置及び方法、圧縮データ再生方法、記録媒体
FR2709366B1 (fr) * 1993-03-26 2001-09-14 Motorola Inc Procédé de stockage de vecteurs de coefficient de réflexion.
KR950008637B1 (ko) * 1993-04-08 1995-08-03 삼성전자주식회사 부밴드 코딩시스템의 신호처리장치
JP3173218B2 (ja) * 1993-05-10 2001-06-04 ソニー株式会社 圧縮データ記録方法及び装置、圧縮データ再生方法、並びに記録媒体
ATE211326T1 (de) * 1993-05-31 2002-01-15 Sony Corp Verfahren und vorrichtung zum kodieren oder dekodieren von signalen und aufzeichnungsmedium
US5493647A (en) * 1993-06-01 1996-02-20 Matsushita Electric Industrial Co., Ltd. Digital signal recording apparatus and a digital signal reproducing apparatus
BR9405445A (pt) * 1993-06-30 1999-09-08 Sony Corp Aparelho codificador e decodificador de sinal apropriado para codificar um sinal de entrada e decodificar um sinal codificado, suporte de gravação onde sinais codificados são gravados, e processo de codificação e de decodificação de sinal para codificar um sinal de entrada e decodificar um sinal codificado.
TW272341B (es) * 1993-07-16 1996-03-11 Sony Co Ltd
US5463424A (en) * 1993-08-03 1995-10-31 Dolby Laboratories Licensing Corporation Multi-channel transmitter/receiver system providing matrix-decoding compatible signals
TW327223B (en) * 1993-09-28 1998-02-21 Sony Co Ltd Methods and apparatus for encoding an input signal broken into frequency components, methods and apparatus for decoding such encoded signal
EP0648031B1 (en) * 1993-10-12 2007-08-01 Matsushita Electric Industrial Co., Ltd. Audio scrambling system for scrambling and descrambling audio signals
US5737720A (en) * 1993-10-26 1998-04-07 Sony Corporation Low bit rate multichannel audio coding methods and apparatus using non-linear adaptive bit allocation
KR100321015B1 (ko) * 1993-10-27 2002-06-20 요트.게.아. 롤페즈 제1및제2주신호성분을송수신하는송수신기
KR100330290B1 (ko) * 1993-11-04 2002-08-27 소니 가부시끼 가이샤 신호부호화장치,신호복호화장치,및신호부호화방법
WO1995013660A1 (fr) * 1993-11-09 1995-05-18 Sony Corporation Appareil de quantification, procede de quantification, codeur a haute efficacite, procede de codage a haute efficacite, decodeur, supports d'enregistrement et de codage a haute efficacite
US5488665A (en) * 1993-11-23 1996-01-30 At&T Corp. Multi-channel perceptual audio compression system with encoding mode switching among matrixed channels
JP3131542B2 (ja) * 1993-11-25 2001-02-05 シャープ株式会社 符号化復号化装置
JP3125543B2 (ja) * 1993-11-29 2001-01-22 ソニー株式会社 信号符号化方法及び装置、信号復号化方法及び装置、並びに記録媒体
KR0134318B1 (ko) * 1994-01-28 1998-04-29 김광호 채널간의 마스킹특성을 고려한 비트할당장치 및 그 방법과 복호화장치
US5731767A (en) * 1994-02-04 1998-03-24 Sony Corporation Information encoding method and apparatus, information decoding method and apparatus, information recording medium, and information transmission method
RU2129737C1 (ru) * 1994-02-17 1999-04-27 Моторола, Инк. Способ группового кодирования сигналов и устройство для осуществления способа
JP3186412B2 (ja) * 1994-04-01 2001-07-11 ソニー株式会社 情報符号化方法、情報復号化方法、及び情報伝送方法
JP3277682B2 (ja) * 1994-04-22 2002-04-22 ソニー株式会社 情報符号化方法及び装置、情報復号化方法及び装置、並びに情報記録媒体及び情報伝送方法
DE69529222T2 (de) * 1994-05-02 2003-10-09 Koninkl Philips Electronics Nv Einrichtung und verfahren zum kodieren eines digitalen signals mit mindestens einer ersten und einer zweiten digitalen signalkomponente
WO1995032556A1 (en) * 1994-05-19 1995-11-30 Philips Electronics N.V. Arrangement for determining a signal spectrum of a wideband digital signal and for deriving bit allocation information in response thereto
TW271524B (es) * 1994-08-05 1996-03-01 Qualcomm Inc
US5818943A (en) * 1994-10-25 1998-10-06 U.S. Philips Corporation Transmission and reception of a first and a second main signal component
JP3371590B2 (ja) * 1994-12-28 2003-01-27 ソニー株式会社 高能率符号化方法及び高能率復号化方法
US5646961A (en) * 1994-12-30 1997-07-08 Lucent Technologies Inc. Method for noise weighting filtering
JPH08223049A (ja) * 1995-02-14 1996-08-30 Sony Corp 信号符号化方法及び装置、信号復号化方法及び装置、情報記録媒体並びに情報伝送方法
US5781452A (en) * 1995-03-22 1998-07-14 International Business Machines Corporation Method and apparatus for efficient decompression of high quality digital audio
US5727119A (en) * 1995-03-27 1998-03-10 Dolby Laboratories Licensing Corporation Method and apparatus for efficient implementation of single-sideband filter banks providing accurate measures of spectral magnitude and phase
US5710863A (en) * 1995-09-19 1998-01-20 Chen; Juin-Hwey Speech signal quantization using human auditory models in predictive coding systems
US5790759A (en) * 1995-09-19 1998-08-04 Lucent Technologies Inc. Perceptual noise masking measure based on synthesis filter frequency response
DE19638997B4 (de) * 1995-09-22 2009-12-10 Samsung Electronics Co., Ltd., Suwon Digitales Toncodierungsverfahren und digitale Toncodierungsvorrichtung
JPH10512131A (ja) * 1995-10-24 1998-11-17 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ サブバンドエンコーダ／デコーダにおける反復復号化および符号化
US5692102A (en) * 1995-10-26 1997-11-25 Motorola, Inc. Method device and system for an efficient noise injection process for low bitrate audio compression
US5956674A (en) * 1995-12-01 1999-09-21 Digital Theater Systems, Inc. Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels
JP3189660B2 (ja) * 1996-01-30 2001-07-16 ソニー株式会社 信号符号化方法
EP0880235A1 (en) * 1996-02-08 1998-11-25 Matsushita Electric Industrial Co., Ltd. Wide band audio signal encoder, wide band audio signal decoder, wide band audio signal encoder/decoder and wide band audio signal recording medium
US5689587A (en) * 1996-02-09 1997-11-18 Massachusetts Institute Of Technology Method and apparatus for data hiding in images
US5893067A (en) * 1996-05-31 1999-04-06 Massachusetts Institute Of Technology Method and apparatus for echo data hiding in audio signals
US5848391A (en) * 1996-07-11 1998-12-08 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Method subband of coding and decoding audio signals using variable length windows
JP3318825B2 (ja) * 1996-08-20 2002-08-26 ソニー株式会社 デジタル信号符号化処理方法、デジタル信号符号化処理装置、デジタル信号記録方法、デジタル信号記録装置、記録媒体、デジタル信号伝送方法及びデジタル信号伝送装置
US6092041A (en) * 1996-08-22 2000-07-18 Motorola, Inc. System and method of encoding and decoding a layered bitstream by re-applying psychoacoustic analysis in the decoder
US8306811B2 (en) * 1996-08-30 2012-11-06 Digimarc Corporation Embedding data in audio and detecting embedded data in audio
JP3496411B2 (ja) * 1996-10-30 2004-02-09 ソニー株式会社 情報符号化方法及び復号化装置
TW384434B (en) 1997-03-31 2000-03-11 Sony Corp Encoding method, device therefor, decoding method, device therefor and recording medium
JP3282661B2 (ja) * 1997-05-16 2002-05-20 ソニー株式会社 信号処理装置および方法
WO1999012292A1 (en) * 1997-08-29 1999-03-11 Sgs-Thomson Microelectronics Asia Pacific (Pte) Ltd. Fast synthesis sub-band filtering method for digital signal decoding
US6466912B1 (en) * 1997-09-25 2002-10-15 At&T Corp. Perceptual coding of audio signals employing envelope uncertainty
KR100335609B1 (ko) * 1997-11-20 2002-10-04 삼성전자 주식회사 비트율조절이가능한오디오부호화/복호화방법및장치
US6351730B2 (en) * 1998-03-30 2002-02-26 Lucent Technologies Inc. Low-complexity, low-delay, scalable and embedded speech and audio coding with adaptive frame loss concealment
US6253165B1 (en) * 1998-06-30 2001-06-26 Microsoft Corporation System and method for modeling probability distribution functions of transform coefficients of encoded signal
JP4287545B2 (ja) 1999-07-26 2009-07-01 パナソニック株式会社 サブバンド符号化方式
JP4242516B2 (ja) 1999-07-26 2009-03-25 パナソニック株式会社 サブバンド符号化方式
US7043312B1 (en) * 2000-02-17 2006-05-09 Sonic Solutions CD playback augmentation for higher resolution and multi-channel sound
US6735561B1 (en) 2000-03-29 2004-05-11 At&T Corp. Effective deployment of temporal noise shaping (TNS) filters
US7099830B1 (en) 2000-03-29 2006-08-29 At&T Corp. Effective deployment of temporal noise shaping (TNS) filters
SE0004187D0 (sv) * 2000-11-15 2000-11-15 Coding Technologies Sweden Ab Enhancing the performance of coding systems that use high frequency reconstruction methods
WO2002091202A1 (en) * 2001-05-04 2002-11-14 Globespan Virata Incorporated System and method for distributed processing of packet data containing audio information
WO2003017561A1 (en) * 2001-08-16 2003-02-27 Globespan Virata Incorporated Apparatus and method for concealing the loss of audio samples
JP4012506B2 (ja) * 2001-08-24 2007-11-21 株式会社ケンウッド 信号の周波数成分を適応的に補間するための装置および方法
US7706402B2 (en) * 2002-05-06 2010-04-27 Ikanos Communications, Inc. System and method for distributed processing of packet data containing audio information
US8090577B2 (en) * 2002-08-08 2012-01-03 Qualcomm Incorported Bandwidth-adaptive quantization
KR100571824B1 (ko) * 2003-11-26 2006-04-17 삼성전자주식회사 부가정보 삽입된 ｍｐｅｇ-4 오디오 ｂｓａｃ부호화/복호화 방법 및 장치
DE102004009955B3 (de) * 2004-03-01 2005-08-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum Ermitteln einer Quantisierer-Schrittweite
FI118406B (fi) * 2006-09-11 2007-10-31 Kone Corp Menetelmä ja laitteisto moottorin jarruttamiseksi
KR20080053739A (ko) * 2006-12-11 2008-06-16 삼성전자주식회사 적응적으로 윈도우 크기를 적용하는 부호화 장치 및 방법
US8521540B2 (en) * 2007-08-17 2013-08-27 Qualcomm Incorporated Encoding and/or decoding digital signals using a permutation value
TWI618350B (zh) 2009-02-18 2018-03-11 杜比國際公司 用於高頻重建或參數立體聲之複指數調變濾波器組
US20110257978A1 (en) * 2009-10-23 2011-10-20 Brainlike, Inc. Time Series Filtering, Data Reduction and Voice Recognition in Communication Device
US8571503B2 (en) * 2010-03-05 2013-10-29 Mitac International Corp. Signal receiving methods and devices
EP2829048B1 (en) 2012-03-23 2017-12-27 Dolby Laboratories Licensing Corporation Placement of sound signals in a 2d or 3d audio conference
JP6339997B2 (ja) 2012-03-23 2018-06-06 ドルビー ラボラトリーズ ライセンシング コーポレイション ２ｄまたは３ｄ会議シーンにおける語り手の配置
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
EP3079151A1 (en) * 2015-04-09 2016-10-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoder and method for encoding an audio signal

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2389277A1 (fr) * 1977-04-29 1978-11-24 Ibm France Procede de quantification a allocation dynamique du taux de bits disponible, et dispositif de mise en oeuvre dudit procede
US4281218A (en) * 1979-10-26 1981-07-28 Bell Telephone Laboratories, Incorporated Speech-nonspeech detector-classifier
US4314100A (en) * 1980-01-24 1982-02-02 Storage Technology Corporation Data detection circuit for a TASI system
DE3171311D1 (en) * 1981-07-28 1985-08-14 Ibm Voice coding method and arrangment for carrying out said method
JPS5921039B2 (ja) * 1981-11-04 1984-05-17 日本電信電話株式会社 適応予測符号化方式
US4449190A (en) * 1982-01-27 1984-05-15 Bell Telephone Laboratories, Incorporated Silence editing speech processor
US4535472A (en) * 1982-11-05 1985-08-13 At&T Bell Laboratories Adaptive bit allocator
GB8326719D0 (en) * 1983-10-06 1983-11-09 British Telecomm Digital coding
GB8421498D0 (en) * 1984-08-24 1984-09-26 British Telecomm Frequency domain speech coding
DE3639753A1 (de) * 1986-11-21 1988-06-01 Inst Rundfunktechnik Gmbh Verfahren zum uebertragen digitalisierter tonsignale
DE3703143A1 (de) * 1987-02-03 1988-08-11 Thomson Brandt Gmbh Verfahren zur uebertragung eines audiosignals
NL8700985A (nl) * 1987-04-27 1988-11-16 Philips Nv Systeem voor sub-band codering van een digitaal audiosignaal.

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US4896362A (en) 1990-01-23
DE3878017T2 (de) 1993-07-22
KR970008640B1 (ko) 1997-05-27
NL8700985A (nl) 1988-11-16
JPS63285032A (ja) 1988-11-22
DE3878017D1 (de) 1993-03-18
EP0289080B1 (en) 1993-02-03
HK88194A (en) 1994-09-02
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US5105463A (en) 1992-04-14
ATE85481T1 (de) 1993-02-15
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