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 CA2053133A CA2053133A CA2053133A1 CA 2053133 A1 CA2053133 A1 CA 2053133A1 CA 2053133 A CA2053133 A CA 2053133A CA 2053133 A CA2053133 A CA 2053133A CA 2053133 A1 CA2053133 A1 CA 2053133A1
Authority
CA
Canada
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
CA2053133A
Other languages
French (fr)
Other versions
CA2053133C (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 KPN NV
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2053133A1 publication Critical patent/CA2053133A1/en
Application granted granted Critical
Publication of CA2053133C publication Critical patent/CA2053133C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Analogue/Digital Conversion (AREA)
  • Electrically Operated Instructional Devices (AREA)

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.
CA002053133A 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)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9002308 1990-10-23
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

Publications (2)

Publication Number Publication Date
CA2053133A1 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
CA002053133A 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 (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)

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 (5)

* 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 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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5650398A (en) * 1979-10-01 1981-05-07 Hitachi Ltd Sound synthesizer
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 linear predictive encoder

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
FI914993A0 (en) 1991-10-23
EP0482699B1 (en) 1997-08-20
FI105623B (en) 2000-09-15
CA2053133C (en) 1996-05-21
NL9002308A (en) 1992-05-18
DE69127339T2 (en) 1998-01-29
EP0482699A3 (en) 1992-08-19
JP2958726B2 (en) 1999-10-06
DK0482699T3 (en) 1998-03-30
NO914105L (en) 1992-04-24
ATE157188T1 (en) 1997-09-15
EP0482699A2 (en) 1992-04-29
FI914993A (en) 1992-04-24
NO914105D0 (en) 1991-10-18
JPH05268098A (en) 1993-10-15
PT99294A (en) 1994-01-31
NO305188B1 (en) 1999-04-12
DE69127339D1 (en) 1997-09-25
ES2106051T3 (en) 1997-11-01

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