CA2053133A1 - Method for coding and decoding a sampled analog signal having a repetitive nature and a device for coding and decoding by said method - Google Patents

Method for coding and decoding a sampled analog signal having a repetitive nature and a device for coding and decoding by said method

Info

Publication number
CA2053133A1
CA2053133A1 CA 2053133 CA2053133A CA2053133A1 CA 2053133 A1 CA2053133 A1 CA 2053133A1 CA 2053133 CA2053133 CA 2053133 CA 2053133 A CA2053133 A CA 2053133A CA 2053133 A1 CA2053133 A1 CA 2053133A1
Authority
CA
Grant status
Application
Patent type
Prior art keywords
decoding
coding
method
components
device
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
CA 2053133
Other languages
French (fr)
Other versions
CA2053133C (en )
Inventor
John Gerard Beerends
Frank Muller
Ravesteijn Robertus Lambertus Adrianus Van
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 KPN NV
Original Assignee
John Gerard Beerends
Frank Muller
Ravesteijn Robertus Lambertus Adrianus Van
Koninklijke Ptt Nederland N.V.
Koninklijke Kpn N.V.
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

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/04Speech 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 predictive techniques
    • G10L19/06Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients

Abstract

Frequency components are calculated from the STP-filtered speech signal. The amplitudes of these are combined in a manner such that the resultant values are associated with frequencies which are situated equidistantly on a linear Bark scale. Said components are quantised, possibly after scaling. In the decoder, the components are again distributed over the frequency spectrum.
In the coder, the fundamental regularity D is determined with an LTP technique, after which it is transmitted. In the decoder the phases of the reconstructed signal at the spacing D in the past are determined. These phases are combined with the amplitudes already present in the frequency spectrum, after which transformation back to the time domain takes place. Inverse STP filtering is then carried out.
CA 2053133 1990-10-23 1991-10-10 Method for coding and decoding a sampled analog signal having a repetitive nature and a device for coding and decoding by said method Expired - Lifetime CA2053133C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL9002308A NL9002308A (en) 1990-10-23 1990-10-23 A method for encoding and decoding a sampled analog signal having a repetitive nature, and an apparatus for coding in accordance with this method, and decoding.
NL9002308 1990-10-23

Publications (2)

Publication Number Publication Date
CA2053133A1 true true CA2053133A1 (en) 1992-04-24
CA2053133C CA2053133C (en) 1996-05-21

Family

ID=19857866

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2053133 Expired - Lifetime CA2053133C (en) 1990-10-23 1991-10-10 Method for coding and decoding a sampled analog signal having a repetitive nature and a device for coding and decoding by said method

Country Status (8)

Country Link
EP (1) EP0482699B1 (en)
JP (1) JP2958726B2 (en)
CA (1) CA2053133C (en)
DE (2) DE69127339T2 (en)
DK (1) DK0482699T3 (en)
ES (1) ES2106051T3 (en)
FI (1) FI105623B (en)
NL (1) NL9002308A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5864794A (en) * 1994-03-18 1999-01-26 Mitsubishi Denki Kabushiki Kaisha Signal encoding and decoding system using auditory parameters and bark spectrum

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09127995A (en) * 1995-10-26 1997-05-16 Sony Corp Signal decoding method and signal decoder
JP2000165251A (en) * 1998-11-27 2000-06-16 Matsushita Electric Ind Co Ltd Audio signal coding device and microphone realizing the same
FI116992B (en) 1999-07-05 2006-04-28 Nokia Corp Methods, systems, and devices of the audio signal encoding and transmission to improve
EP1113432B1 (en) * 1999-12-24 2011-03-30 International Business Machines Corporation Method and system for detecting identical digital data

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS623439B2 (en) * 1979-10-01 1987-01-24 Hitachi Ltd
US4742550A (en) * 1984-09-17 1988-05-03 Motorola, Inc. 4800 BPS interoperable relp system
JP2892462B2 (en) * 1990-08-27 1999-05-17 沖電気工業株式会社 Code Excited LPC

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5864794A (en) * 1994-03-18 1999-01-26 Mitsubishi Denki Kabushiki Kaisha Signal encoding and decoding system using auditory parameters and bark spectrum

Also Published As

Publication number Publication date Type
CA2053133C (en) 1996-05-21 grant
FI914993D0 (en) grant
ES2106051T3 (en) 1997-11-01 grant
FI105623B1 (en) grant
JPH05268098A (en) 1993-10-15 application
FI914993A (en) 1992-04-24 application
EP0482699B1 (en) 1997-08-20 grant
FI914993A0 (en) 1991-10-23 application
EP0482699A3 (en) 1992-08-19 application
DK0482699T3 (en) 1998-03-30 grant
JP2958726B2 (en) 1999-10-06 grant
DE69127339T2 (en) 1998-01-29 grant
FI105623B (en) 2000-09-15 application
DE69127339D1 (en) 1997-09-25 grant
NL9002308A (en) 1992-05-18 application
EP0482699A2 (en) 1992-04-29 application

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