DE68927927T2 - Kodierung von Audiosignalen unter Berücksichtigung der Wahrnehmbarkeit - Google Patents

Kodierung von Audiosignalen unter Berücksichtigung der Wahrnehmbarkeit

Info

Publication number
DE68927927T2
DE68927927T2 DE68927927T DE68927927T DE68927927T2 DE 68927927 T2 DE68927927 T2 DE 68927927T2 DE 68927927 T DE68927927 T DE 68927927T DE 68927927 T DE68927927 T DE 68927927T DE 68927927 T2 DE68927927 T2 DE 68927927T2
Authority
DE
Germany
Prior art keywords
perceptibility
coding
account
audio signals
signals taking
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
DE68927927T
Other languages
English (en)
Other versions
DE68927927D1 (de
Inventor
Ii Joseph Lindley Hall
James David Johnston
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.)
AT&T Corp
Original Assignee
AT&T 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 AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of DE68927927D1 publication Critical patent/DE68927927D1/de
Publication of DE68927927T2 publication Critical patent/DE68927927T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/007—Two-channel systems in which the audio signals are in digital form
    • 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
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H03M7/42—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code using table look-up for the coding or decoding process, e.g. using read-only memory
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Analogue/Digital Conversion (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
DE68927927T 1988-12-30 1989-12-14 Kodierung von Audiosignalen unter Berücksichtigung der Wahrnehmbarkeit Expired - Lifetime DE68927927T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29259888A 1988-12-30 1988-12-30

Publications (2)

Publication Number Publication Date
DE68927927D1 DE68927927D1 (de) 1997-05-07
DE68927927T2 true DE68927927T2 (de) 1997-07-17

Family

ID=23125368

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68927927T Expired - Lifetime DE68927927T2 (de) 1988-12-30 1989-12-14 Kodierung von Audiosignalen unter Berücksichtigung der Wahrnehmbarkeit

Country Status (9)

Country Link
EP (1) EP0376553B1 (de)
JP (1) JPH0748698B2 (de)
KR (1) KR0137472B1 (de)
AU (1) AU611067B2 (de)
CA (1) CA2002015C (de)
DE (1) DE68927927T2 (de)
ES (1) ES2099695T3 (de)
GR (1) GR3023926T3 (de)
HK (1) HK107997A (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE40280E1 (en) 1988-12-30 2008-04-29 Lucent Technologies Inc. Rate loop processor for perceptual encoder/decoder
EP0559348A3 (de) * 1992-03-02 1993-11-03 AT&T Corp. Rateurregelschleifenprozessor für einen wahrnehmungsgebundenen Koder/Dekoder
DE4211945C1 (de) * 1992-04-09 1993-05-19 Institut Fuer Rundfunktechnik Gmbh, 8000 Muenchen, De
PL173718B1 (pl) * 1993-06-30 1998-04-30 Sony Corp Sposób i urządzenie do kodowania sygnałów cyfrowych
US5632003A (en) * 1993-07-16 1997-05-20 Dolby Laboratories Licensing Corporation Computationally efficient adaptive bit allocation for coding method and apparatus
US5623577A (en) * 1993-07-16 1997-04-22 Dolby Laboratories Licensing Corporation Computationally efficient adaptive bit allocation for encoding method and apparatus with allowance for decoder spectral distortions
DE69427726T2 (de) * 1993-09-10 2002-05-08 Sony Corp Quantisierungsgerät
BE1007616A3 (nl) * 1993-10-11 1995-08-22 Philips Electronics Nv Transmissiesysteem met vereenvoudigde broncodering.
KR0134318B1 (ko) * 1994-01-28 1998-04-29 김광호 채널간의 마스킹특성을 고려한 비트할당장치 및 그 방법과 복호화장치
US5488365A (en) * 1994-03-01 1996-01-30 Hewlett-Packard Company Method and apparatus for compressing and decompressing short blocks of data
FR2723493B1 (fr) * 1994-08-05 1997-01-10 France Telecom Procede et dispositif de codage et de decodage sonore par compression frequentielle, notamment pour application a une memoire de masse sonore.
US8041042B2 (en) * 2006-11-30 2011-10-18 Nokia Corporation Method, system, apparatus and computer program product for stereo coding
EP3483879A1 (de) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Analyse-/synthese-fensterfunktion für modulierte geläppte transformation
WO2019091573A1 (en) * 2017-11-10 2019-05-16 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for encoding and decoding an audio signal using downsampling or interpolation of scale parameters
CN113747236A (zh) * 2021-10-19 2021-12-03 江下信息科技(惠州)有限公司 一种基于多线程的音频格式高速转换方法及系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646061A (en) * 1985-03-13 1987-02-24 Racal Data Communications Inc. Data communication with modified Huffman coding
US4969192A (en) * 1987-04-06 1990-11-06 Voicecraft, Inc. Vector adaptive predictive coder for speech and audio
DE3883701T2 (de) * 1987-10-30 1994-02-10 Nippon Telegraph & Telephone Verfahren und Vorrichtung für multiplexierte Vektorquantifizierung.

Also Published As

Publication number Publication date
HK107997A (en) 1997-08-22
KR0137472B1 (ko) 1998-06-15
JPH0748698B2 (ja) 1995-05-24
JPH03121633A (ja) 1991-05-23
DE68927927D1 (de) 1997-05-07
AU4608389A (en) 1990-07-05
EP0376553A2 (de) 1990-07-04
EP0376553B1 (de) 1997-04-02
ES2099695T3 (es) 1997-06-01
EP0376553A3 (de) 1992-05-20
CA2002015C (en) 1994-12-27
AU611067B2 (en) 1991-05-30
GR3023926T3 (en) 1997-09-30
CA2002015A1 (en) 1990-06-30
KR900011162A (ko) 1990-07-11

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Legal Events

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