KR910019351A - 디지탈 신호 부호화 장치 - Google Patents

디지탈 신호 부호화 장치 Download PDF

Info

Publication number
KR910019351A
KR910019351A KR1019910006192A KR910006192A KR910019351A KR 910019351 A KR910019351 A KR 910019351A KR 1019910006192 A KR1019910006192 A KR 1019910006192A KR 910006192 A KR910006192 A KR 910006192A KR 910019351 A KR910019351 A KR 910019351A
Authority
KR
South Korea
Prior art keywords
band
noise level
digital signal
signal
energy
Prior art date
Application number
KR1019910006192A
Other languages
English (en)
Other versions
KR0185593B1 (ko
Inventor
겐조 아까기리
Original Assignee
오오가 노리오
소니 가부시끼가이샤
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 오오가 노리오, 소니 가부시끼가이샤 filed Critical 오오가 노리오
Publication of KR910019351A publication Critical patent/KR910019351A/ko
Application granted granted Critical
Publication of KR0185593B1 publication Critical patent/KR0185593B1/ko

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/50—Conversion to or from non-linear codes, e.g. companding
    • 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
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/007—Transform coding, e.g. discrete cosine transform
    • 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

Abstract

내용 없음

Description

디지탈 신호 부호화 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 일 실시예의 디지탈 신호 부호와 장치의 개략 구성율 도시하는 블록 회로도, 제2도 내지 제5도는 각 레벨과 각 주파수에 있어서의 마스킹 효과를 설명하기 위한 특성도, 제9도는 필터 회로의 구체적 구성을 도시하는 블록 회로도, 제10도는 어드레스 제어회로의 구체적 구성을 도시하는 블록 회로도.

Claims (2)

  1. 입력 디지탈 신호를 복수의 주파수 대역으로 분할함과 더블어 각 밴드마다의 에너지에 기준해서 각 밴드 단위의 허용 소음 레벨을 설정하는 소음레벨 설정 수단과, 상기 각 밴드의 에너지와 상기 소음 레벨 설정 수단의 차의 레벨에 따른 비트수로 상기 각 밴드의 성분을 양지화하는 양자화 수단을 갖는 디지탈 신호화 장치에 있어서, 상기 소음 레벨 설정 수단은 주목하는 밴드 및 다른 밴드의 에너지에 기준해서 상기 주목 밴드의 허용 소음 레벨을 설정함과 더불어 상기 에너지와 허용 소음 레벨과의 관계가 비선형이 되게 한 것을 특징으로 하는 디지탈 신호 부호화장치.
  2. 제1항에 있어서, 상기 입력 디지탈 신호는 프리엠파스가 걸린 신호이며 상기 허용 소음 레벨 설정 수단에 공급되는 신호는 해당 프리 엠파시스가 부정된 신호인 것을 특징으로 하는 디지탈 신호 부호화 장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910006192A 1990-04-20 1991-04-18 디지탈 신호 부호화 장치 KR0185593B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2103045A JP2861238B2 (ja) 1990-04-20 1990-04-20 ディジタル信号符号化方法
JP103045 1990-04-20

Publications (2)

Publication Number Publication Date
KR910019351A true KR910019351A (ko) 1991-11-30
KR0185593B1 KR0185593B1 (ko) 1999-04-15

Family

ID=14343698

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910006192A KR0185593B1 (ko) 1990-04-20 1991-04-18 디지탈 신호 부호화 장치

Country Status (5)

Country Link
US (2) US5157760A (ko)
EP (1) EP0453282B1 (ko)
JP (1) JP2861238B2 (ko)
KR (1) KR0185593B1 (ko)
DE (1) DE69122648T2 (ko)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA921988B (en) * 1991-03-29 1993-02-24 Sony Corp High efficiency digital data encoding and decoding apparatus
KR100268623B1 (ko) * 1991-06-28 2000-10-16 이데이 노부유끼 압축 데이타 기록 재생 장치 및 신호 처리 방법
JPH0537298A (ja) * 1991-07-29 1993-02-12 Rohm Co Ltd デイジタルフイルタ
EP0525809B1 (en) * 1991-08-02 2001-12-05 Sony Corporation Digital encoder with dynamic quantization bit allocation
DE69231369T2 (de) * 1991-09-30 2001-03-29 Sony Corp Verfahren und Einrichtung zur Audiodatenkompression
US5369724A (en) * 1992-01-17 1994-11-29 Massachusetts Institute Of Technology Method and apparatus for encoding, decoding and compression of audio-type data using reference coefficients located within a band of coefficients
US5394508A (en) * 1992-01-17 1995-02-28 Massachusetts Institute Of Technology Method and apparatus for encoding decoding and compression of audio-type data
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
US5765127A (en) * 1992-03-18 1998-06-09 Sony Corp High efficiency encoding method
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
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
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
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
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
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
TW232116B (en) * 1993-04-14 1994-10-11 Sony Corp Method or device and recording media for signal conversion
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
KR100458969B1 (ko) * 1993-05-31 2005-04-06 소니 가부시끼 가이샤 신호부호화또는복호화장치,및신호부호화또는복호화방법
JP3721582B2 (ja) * 1993-06-30 2005-11-30 ソニー株式会社 信号符号化装置及び方法並びに信号復号化装置及び方法
WO1995002239A1 (en) * 1993-07-07 1995-01-19 Picturetel Corporation Voice-activated automatic gain control
TW272341B (ko) * 1993-07-16 1996-03-11 Sony Co Ltd
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
KR100330290B1 (ko) * 1993-11-04 2002-08-27 소니 가부시끼 가이샤 신호부호화장치,신호복호화장치,및신호부호화방법
EP0692881B1 (en) * 1993-11-09 2005-06-15 Sony Corporation Quantization apparatus, quantization method, high efficiency encoder, high efficiency encoding method, decoder, high efficiency encoder and recording media
JP3131542B2 (ja) * 1993-11-25 2001-02-05 シャープ株式会社 符号化復号化装置
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
JP3327923B2 (ja) * 1994-05-02 2002-09-24 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 少なくとも第１及び第２ディジタル信号成分を有するディジタル信号を符号化する符号化システム及び符号化方法
TW295747B (ko) * 1994-06-13 1997-01-11 Sony Co Ltd
US5742734A (en) * 1994-08-10 1998-04-21 Qualcomm Incorporated Encoding rate selection in a variable rate vocoder
KR0183328B1 (ko) * 1994-10-28 1999-04-15 다나까 미노루 부호화 데이터 복호 장치와 그것을 이용한 화상 오디오다중화 데이터 복호 장치
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
US5774859A (en) * 1995-01-03 1998-06-30 Scientific-Atlanta, Inc. Information system having a speech interface
US5682463A (en) * 1995-02-06 1997-10-28 Lucent Technologies Inc. Perceptual audio compression based on loudness uncertainty
JP3307138B2 (ja) * 1995-02-27 2002-07-24 ソニー株式会社 信号符号化方法及び装置、並びに信号復号化方法及び装置
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
WO1996035269A1 (en) * 1995-05-03 1996-11-07 Sony Corporation Non-linearly quantizing an information signal
US5706392A (en) * 1995-06-01 1998-01-06 Rutgers, The State University Of New Jersey Perceptual speech coder and method
JP3082625B2 (ja) * 1995-07-15 2000-08-28 日本電気株式会社 音声信号処理回路
US5960390A (en) * 1995-10-05 1999-09-28 Sony Corporation Coding method for using multi channel audio signals
US5825320A (en) * 1996-03-19 1998-10-20 Sony Corporation Gain control method for audio encoding device
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
US6934677B2 (en) 2001-12-14 2005-08-23 Microsoft Corporation Quantization matrices based on critical band pattern information for digital audio wherein quantization bands differ from critical bands
US6844758B2 (en) * 2002-07-12 2005-01-18 Mstar Semiconductor Inc. Frequency synthesizer
US7502743B2 (en) 2002-09-04 2009-03-10 Microsoft Corporation Multi-channel audio encoding and decoding with multi-channel transform selection
JP4676140B2 (ja) 2002-09-04 2011-04-27 マイクロソフト コーポレーション オーディオの量子化および逆量子化
JP6447357B2 (ja) * 2015-05-18 2019-01-09 株式会社Ｊｖｃケンウッド オーディオ信号処理装置、オーディオ信号処理方法及びオーディオ信号処理プログラム

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130729A (en) * 1977-09-19 1978-12-19 Scitronix Corporation Compressed speech system
US4455649A (en) * 1982-01-15 1984-06-19 International Business Machines Corporation Method and apparatus for efficient statistical multiplexing of voice and data signals
US4790016A (en) * 1985-11-14 1988-12-06 Gte Laboratories Incorporated Adaptive method and apparatus for coding speech
DE3703143A1 (de) * 1987-02-03 1988-08-11 Thomson Brandt Gmbh Verfahren zur uebertragung eines audiosignals
US4811404A (en) * 1987-10-01 1989-03-07 Motorola, Inc. Noise suppression system
JPH01118900A (ja) * 1987-11-01 1989-05-11 Ricoh Co Ltd 雑音抑圧装置
WO1989011759A1 (en) * 1988-05-26 1989-11-30 Telefunken Fernseh Und Rundfunk Gmbh Process for transmitting an audio signal
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
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
US5157489A (en) * 1991-10-28 1992-10-20 Virgil Lowe Apparatus and method for reducing quantizing distortion

Also Published As

Publication number Publication date
DE69122648D1 (de) 1996-11-21
EP0453282A3 (en) 1992-12-09
DE69122648T2 (de) 1997-02-27
EP0453282A2 (en) 1991-10-23
KR0185593B1 (ko) 1999-04-15
US5157760A (en) 1992-10-20
JPH043523A (ja) 1992-01-08
JP2861238B2 (ja) 1999-02-24
EP0453282B1 (en) 1996-10-16
USRE35809E (en) 1998-05-26

Similar Documents

Publication Publication Date Title
KR910019351A (ko) 디지탈 신호 부호화 장치
KR920019106A (ko) 디지탈신호 부호화장치
DE69230760T2 (de) Integrierte signalisierung
KR910021054A (ko) 디지탈 신호 인코딩 장치
KR910007294A (ko) 디지탈신호부호화장치
KR910007293A (ko) 디지탈신호부호화장치
FI883446A (fi) Foerfarande foer transmission av digitaliska audiosignaler.
DE69418994T2 (de) Kodier- und Dekodierapparat welcher keine Tonqualität verschlechtert, sogar wenn ein Sinuswellen-Signal dekodiert wird
KR930024306A (ko) 데이타 압축 신장 장치
KR830008558A (ko) 파형변환회로(波形變換回路)
ES2129440T3 (es) Modem semi-duplex para red de radiotelefonos gsm.
KR830007002A (ko) 디지탈 신호 처리장치
KR840001034A (ko) 잡음 저감회로
ATE9622T1 (de) System zur verarbeitung und uebertragung von pcm signalen.
KR900019399A (ko) 디지탈신호 처리장치
KR910005690A (ko) 화상 데이타의 부호화 장치
ES2053204T3 (es) Sistema de reduccion de anchura de palabras para tratamiento y transmision de señales de video.
KR890016856A (ko) 비데오 신호 송신시스템 및 상기 시스템에 적합한 송,수신기
SE9603982D0 (sv) Anordning för att undertrycka harmoniska störningar vid signalöverföring
DE58906695D1 (de) Filter.
KR970031383A (ko) 디지털신호 뮤트방법과 디지털신호 뮤트방법을 이용하는 디지털신호처리장치와 디지털신호 기록장치(method for muting a digital signal and a digital signal recording apparatus and a digital signal processing apparatus employing the digital signal muting method)
KR930703746A (ko) 스케일 펙터를 사용하는 블록 코드화된 디지탈 오디오 신호전송방법
KR910004039A (ko) 영상 신호 기록 장치의 대역 제한기
KR930005379A (ko) 디지탈 데이타의 고능률 부호화 방법 및 장치
KR920019187A (ko) 디지탈 신호 부호화 장치

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20101221

Year of fee payment: 13

EXPY Expiration of term