EP0482699A3 - 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 Download PDF

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Publication number
EP0482699A3
EP0482699A3 EP19910202675 EP91202675A EP0482699A3 EP 0482699 A3 EP0482699 A3 EP 0482699A3 EP 19910202675 EP19910202675 EP 19910202675 EP 91202675 A EP91202675 A EP 91202675A EP 0482699 A3 EP0482699 A3 EP 0482699A3
Authority
EP
European Patent Office
Prior art keywords
decoding
coding
components
stp
decoder
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
EP19910202675
Other versions
EP0482699B1 (en
EP0482699A2 (en
Inventor
John Gerard Beerends
Frank Muller
Robertus Lambertus Adrianus Van Ravesteijn
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 PTT Nederland NV
Original Assignee
Koninklijke PTT Nederland NV
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 Koninklijke PTT Nederland NV filed Critical Koninklijke PTT Nederland NV
Publication of EP0482699A2 publication Critical patent/EP0482699A2/en
Publication of EP0482699A3 publication Critical patent/EP0482699A3/en
Application granted granted Critical
Publication of EP0482699B1 publication Critical patent/EP0482699B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech 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
    • G10L19/04—Speech 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
    • G10L19/06—Determination 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.
EP91202675A 1990-10-23 1991-10-16 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 EP0482699B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9002308A NL9002308A (en) 1990-10-23 1990-10-23 METHOD FOR CODING AND DECODING A SAMPLED ANALOGUE SIGNAL WITH A REPEATING CHARACTER AND AN APPARATUS FOR CODING AND DECODING ACCORDING TO THIS METHOD
NL9002308 1990-10-23

Publications (3)

Publication Number Publication Date
EP0482699A2 EP0482699A2 (en) 1992-04-29
EP0482699A3 true EP0482699A3 (en) 1992-08-19
EP0482699B1 EP0482699B1 (en) 1997-08-20

Family

ID=19857866

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91202675A Expired - Lifetime EP0482699B1 (en) 1990-10-23 1991-10-16 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 (11)

Country Link
EP (1) EP0482699B1 (en)
JP (1) JP2958726B2 (en)
AT (1) ATE157188T1 (en)
CA (1) CA2053133C (en)
DE (1) DE69127339T2 (en)
DK (1) DK0482699T3 (en)
ES (1) ES2106051T3 (en)
FI (1) FI105623B (en)
NL (1) NL9002308A (en)
NO (1) NO305188B1 (en)
PT (1) PT99294A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07261797A (en) * 1994-03-18 1995-10-13 Mitsubishi Electric Corp Signal encoding device and signal decoding device
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 for enhancing audio coding and transmission
EP1113432B1 (en) * 1999-12-24 2011-03-30 International Business Machines Corporation Method and system for detecting identical digital data
CN114519996B (en) * 2022-04-20 2022-07-08 北京远鉴信息技术有限公司 Method, device and equipment for determining voice synthesis type and storage medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2060321A (en) * 1979-10-01 1981-04-29 Hitachi Ltd Speech synthesizer
US4742550A (en) * 1984-09-17 1988-05-03 Motorola, Inc. 4800 BPS interoperable relp system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2892462B2 (en) * 1990-08-27 1999-05-17 沖電気工業株式会社 Code-excited linear predictive encoder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2060321A (en) * 1979-10-01 1981-04-29 Hitachi Ltd Speech synthesizer
US4742550A (en) * 1984-09-17 1988-05-03 Motorola, Inc. 4800 BPS interoperable relp system

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
ADVANCED IN SPEECH CODING (IEEE WORKSHOP ON SPEECH CODING FOR TELECOMMUNICATIONS, Vancouver, CA, 5th - 8th September 1989), pages 81-86, Kluwer Academic Publishers, Dordrecht, NL; H. SUDA et al.: "An error protected transform coder for cellular mobile radio" *
ICASSP'85 (IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, Tampa, Florida, 26th - 29th March 1985), vol. 2, pages 509-513, IEEE, New York, US; H. HERMANSKY et al.: "Perceptually based linear predictive analysis of speech" *
ICASSP'86 (IEEE-IECEJ-ASJ INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, Tokyo, 7th - 11th April 1986), vol. 4, pages 3075-3078, IEEE, New York, US; B. MAZOR et al.: "Adaptive subbands excited transform (ASET) coding" *
ICASSP'88 (1988 INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, New York, 11th - 14th April 1988), vol. 1, pages 263-266, IEEE, New York, US; B. FETTE et al.: "Experiments with a high quality, low complexity 4800 bps residual excited LPC (RELP) vocoder" *
ICC'87 (IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, SEATTLE, 7th - 10th June 1987), vol. 1, pages 418-424, IEEE, New York, US; Y. YATSUZUKA et al.: "Hardware implementation of 9.6/16 Kbit/s APC-MLQ speech codec and its application for mobile satellite communications" *

Also Published As

Publication number Publication date
EP0482699B1 (en) 1997-08-20
EP0482699A2 (en) 1992-04-29
DE69127339T2 (en) 1998-01-29
NO914105L (en) 1992-04-24
FI914993A (en) 1992-04-24
NL9002308A (en) 1992-05-18
DK0482699T3 (en) 1998-03-30
PT99294A (en) 1994-01-31
JPH05268098A (en) 1993-10-15
ATE157188T1 (en) 1997-09-15
FI105623B (en) 2000-09-15
JP2958726B2 (en) 1999-10-06
ES2106051T3 (en) 1997-11-01
NO914105D0 (en) 1991-10-18
NO305188B1 (en) 1999-04-12
FI914993A0 (en) 1991-10-23
DE69127339D1 (en) 1997-09-25
CA2053133A1 (en) 1992-04-24
CA2053133C (en) 1996-05-21

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