CA2027136A1 - Codage perceptif des signaux audio - Google Patents

Codage perceptif des signaux audio

Info

Publication number
CA2027136A1
CA2027136A1 CA2027136A CA2027136A CA2027136A1 CA 2027136 A1 CA2027136 A1 CA 2027136A1 CA 2027136 A CA2027136 A CA 2027136A CA 2027136 A CA2027136 A CA 2027136A CA 2027136 A1 CA2027136 A1 CA 2027136A1
Authority
CA
Canada
Prior art keywords
audio signals
values
function
noise masking
perceptual coding
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.)
Granted
Application number
CA2027136A
Other languages
English (en)
Other versions
CA2027136C (fr
Inventor
Karlheinz Brandenburg
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
American Telephone and Telegraph Co Inc
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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of CA2027136A1 publication Critical patent/CA2027136A1/fr
Application granted granted Critical
Publication of CA2027136C publication Critical patent/CA2027136C/fr
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
    • 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
    • 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)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
CA002027136A 1989-10-18 1990-10-09 Codage perceptif des signaux audio Expired - Lifetime CA2027136C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US423,088 1989-10-18
US07/423,088 US5040217A (en) 1989-10-18 1989-10-18 Perceptual coding of audio signals

Publications (2)

Publication Number Publication Date
CA2027136A1 true CA2027136A1 (fr) 1991-04-19
CA2027136C CA2027136C (fr) 2001-01-16

Family

ID=23677639

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002027136A Expired - Lifetime CA2027136C (fr) 1989-10-18 1990-10-09 Codage perceptif des signaux audio

Country Status (7)

Country Link
US (2) US5040217A (fr)
EP (1) EP0424016B1 (fr)
JP (1) JP2756515B2 (fr)
KR (1) KR100209870B1 (fr)
CA (1) CA2027136C (fr)
DE (1) DE69028675T2 (fr)
HK (1) HK220296A (fr)

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US5040217A (en) 1991-08-13
JP2756515B2 (ja) 1998-05-25
KR100209870B1 (ko) 1999-07-15
HK220296A (en) 1997-01-03
EP0424016B1 (fr) 1996-09-25
JPH03144700A (ja) 1991-06-20
EP0424016A3 (en) 1992-09-02
DE69028675D1 (de) 1996-10-31
CA2027136C (fr) 2001-01-16
KR910008975A (ko) 1991-05-31
EP0424016A2 (fr) 1991-04-24
USRE36714E (en) 2000-05-23
DE69028675T2 (de) 1997-02-13

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