KR880001117A - 오디오 신호의 전송방법 - Google Patents

오디오 신호의 전송방법 Download PDF

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Publication number
KR880001117A
KR880001117A KR1019870006508A KR870006508A KR880001117A KR 880001117 A KR880001117 A KR 880001117A KR 1019870006508 A KR1019870006508 A KR 1019870006508A KR 870006508 A KR870006508 A KR 870006508A KR 880001117 A KR880001117 A KR 880001117A
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KR
South Korea
Prior art keywords
threshold value
value
shifted
audio signal
frequency
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KR1019870006508A
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English (en)
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KR910005908B1 (ko
Inventor
레프 클라에 데트
베크만 클라우스
Original Assignee
뮐러-마헨스, 로베르트 아인젤
텔레풍켄 페른제 운트 룬트풍크 게엠베하
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Priority claimed from DE3621513A external-priority patent/DE3621513C2/de
Application filed by 뮐러-마헨스, 로베르트 아인젤, 텔레풍켄 페른제 운트 룬트풍크 게엠베하 filed Critical 뮐러-마헨스, 로베르트 아인젤
Publication of KR880001117A publication Critical patent/KR880001117A/ko
Application granted granted Critical
Publication of KR910005908B1 publication Critical patent/KR910005908B1/ko

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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
    • 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

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Analogue/Digital Conversion (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Toys (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Television Systems (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

내용 없음

Description

오디오 신호의 전송방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 시간창에 의하여 절취된 정현파신호의 주파수 스팩트럼을 표시하는 도면. 제3도는 본 발명에 의한 방법의 시간적 경과를 표시하는 도면.

Claims (9)

  1. 애널로그 신호를 디지틀 신호로 변환해서 디지틀적으로 전송하고, 다시 애널로그신호로 변환하는 오디오신호의 전송 방법에 있어서, 문턱 값을 쉬프트하고, 및/또는 주파수에 대응해서 값을 상승시키는 것을 특징으로 하는 오디오신호의 전송방법.
  2. 제1항에 있어서, 문턱 값을 하회하면 주파수군에 있어서의 값이 영으로 간주하고, 또한 문턱값이 적응적으로 쉬프트되는 것을 특징으로 하는 방법.
  3. 제2항에 있어서, 문턱값이 -30dB--50dB의 사이에서 쉬프트되는 것을 특징으로 하는 방법.
  4. 제1항에 있어서, 주파수에 의존하여 값을 상승시키는 것을 특징으로 하는 방법.
  5. 제4항에 있어서, 전처리스텝(13)중에서, 신호가 검사블록(30)의 앞에 고역필터(31)를 통하여 유도되는 것을 특징으로하는 방법.
  6. 제1항에 있어서, 모든 주파수군에 걸쳐서 가청문턱 값(2,3)이 설정되어 있는 것을 특징으로 하는 방법.
  7. 제6항에 있어서, 가청 문턱 값(2)이 일정한 간격만큼 최대치(xmax)로부터 떨어져 있는 것을 특징으로하는 방법.
  8. 제7항에 있어서, 가청문턱값(2)이 하한치(3)까지만 쉬프트되는 것을 특징으로 하는 방법.
  9. 제8항에 있어서, 하한치(3)와 절대최대치(xmaxl)의 간격이 -128dB인 것을 특징으로 하는 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019870006508A 1986-06-26 1987-06-26 오디오 신호의 전송방법 KR910005908B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JPP3621513.9 1986-06-26
DE3621513A DE3621513C2 (de) 1985-02-27 1986-06-27 Verfahren zur Übertragung eines Audiosignales
DE3621513.9 1986-06-27

Publications (2)

Publication Number Publication Date
KR880001117A true KR880001117A (ko) 1988-03-31
KR910005908B1 KR910005908B1 (ko) 1991-08-06

Family

ID=6303804

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019870006508A KR910005908B1 (ko) 1986-06-26 1987-06-26 오디오 신호의 전송방법

Country Status (10)

Country Link
EP (1) EP0251028B1 (ko)
JP (1) JP2792853B2 (ko)
KR (1) KR910005908B1 (ko)
AT (1) ATE103438T1 (ko)
DE (1) DE3789404D1 (ko)
DK (1) DK174447B1 (ko)
ES (1) ES2051264T3 (ko)
HK (1) HK7896A (ko)
HU (1) HU197135B (ko)
NO (1) NO300708B1 (ko)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703143A1 (de) * 1987-02-03 1988-08-11 Thomson Brandt Gmbh Verfahren zur uebertragung eines audiosignals
JP3171840B2 (ja) * 1988-05-26 2001-06-04 トムソン コンシューマー エレクトロニクス セイルズ ゲゼルシャフト ミット ベシュレンクテル ハフツング オーデイオ信号の伝送方法及びデコーディング装置
USRE40280E1 (en) 1988-12-30 2008-04-29 Lucent Technologies Inc. Rate loop processor for perceptual encoder/decoder
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
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
DE3902948A1 (de) * 1989-02-01 1990-08-09 Telefunken Fernseh & Rundfunk Verfahren zur uebertragung eines signals
US5361278A (en) * 1989-10-06 1994-11-01 Telefunken Fernseh Und Rundfunk Gmbh Process for transmitting a signal
WO1991005412A1 (de) * 1989-10-06 1991-04-18 Telefunken Fernseh Und Rundfunk Gmbh Verfahren zur übertragung eines signals
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
EP0559348A3 (en) 1992-03-02 1993-11-03 AT&T Corp. Rate control loop processor for perceptual encoder/decoder
US5451954A (en) * 1993-08-04 1995-09-19 Dolby Laboratories Licensing Corporation Quantization noise suppression for encoder/decoder system
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
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
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
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
DE19515805C2 (de) * 1995-04-29 1997-08-07 Inst Rundfunktechnik Gmbh Verfahren zur Datenreduktion eines digitalisierten Tonsignals
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
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
JP5435204B2 (ja) * 2006-07-03 2014-03-05 日本電気株式会社 雑音抑圧の方法、装置、及びプログラム
JP4941106B2 (ja) * 2007-05-30 2012-05-30 カシオ計算機株式会社 共鳴音付加装置および共鳴音付加プログラム
JP4877076B2 (ja) * 2007-05-30 2012-02-15 カシオ計算機株式会社 共鳴音付加装置および共鳴音付加プログラム

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986003873A1 (en) * 1984-12-20 1986-07-03 Gte Laboratories Incorporated Method and apparatus for encoding speech

Also Published As

Publication number Publication date
ES2051264T3 (es) 1994-06-16
EP0251028B1 (de) 1994-03-23
JPS637023A (ja) 1988-01-12
EP0251028A3 (en) 1988-12-07
KR910005908B1 (ko) 1991-08-06
DK327287A (da) 1987-12-28
DK174447B1 (da) 2003-03-17
HU197135B (en) 1989-02-28
EP0251028A2 (de) 1988-01-07
NO300708B1 (no) 1997-07-07
NO872692D0 (no) 1987-06-26
ATE103438T1 (de) 1994-04-15
NO872692L (no) 1987-12-28
DK327287D0 (da) 1987-06-26
DE3789404D1 (de) 1994-04-28
HUT44880A (en) 1988-04-28
HK7896A (en) 1996-01-26
JP2792853B2 (ja) 1998-09-03

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