EP1172803A3 - Vector quantization system and method of operation - Google Patents

Vector quantization system and method of operation Download PDF

Info

Publication number
EP1172803A3
EP1172803A3 EP01116530A EP01116530A EP1172803A3 EP 1172803 A3 EP1172803 A3 EP 1172803A3 EP 01116530 A EP01116530 A EP 01116530A EP 01116530 A EP01116530 A EP 01116530A EP 1172803 A3 EP1172803 A3 EP 1172803A3
Authority
EP
European Patent Office
Prior art keywords
lsf
estimate
term
long
mean
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.)
Withdrawn
Application number
EP01116530A
Other languages
German (de)
French (fr)
Other versions
EP1172803A2 (en
Inventor
Jonathan Alastair Gibbs
Mark Jasiuk
Alun Evans
Aaron Smith
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of EP1172803A2 publication Critical patent/EP1172803A2/en
Publication of EP1172803A3 publication Critical patent/EP1172803A3/en
Withdrawn legal-status Critical Current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
    • G10L19/07—Line spectrum pair [LSP] vocoders

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

A method of providing robust quantization of speech spectral parameters tolerant to spectral balance and speaker variations, the method including the steps of, for each of a plurality of line spectral frequencies (LSFs) of a speech spectrum, quantizing (14) the displacement (12) of the LSF from an estimate (42) of its long-term mean, reconstructing (22,34) an estimate of the LSF from the quantized displacement and the long-term LSF mean estimate, and filtering (26,30,32) the reconstructed LSF estimate, thereby providing a subsequent long-term LSF mean estimate.
EP01116530A 2000-07-13 2001-07-09 Vector quantization system and method of operation Withdrawn EP1172803A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0017145A GB2364870A (en) 2000-07-13 2000-07-13 Vector quantization system for speech encoding/decoding
GB0017145 2000-07-13

Publications (2)

Publication Number Publication Date
EP1172803A2 EP1172803A2 (en) 2002-01-16
EP1172803A3 true EP1172803A3 (en) 2004-01-14

Family

ID=9895545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01116530A Withdrawn EP1172803A3 (en) 2000-07-13 2001-07-09 Vector quantization system and method of operation

Country Status (2)

Country Link
EP (1) EP1172803A3 (en)
GB (1) GB2364870A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5966688A (en) * 1997-10-28 1999-10-12 Hughes Electronics Corporation Speech mode based multi-stage vector quantizer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3033060B2 (en) * 1988-12-22 2000-04-17 国際電信電話株式会社 Voice prediction encoding / decoding method
US5664053A (en) * 1995-04-03 1997-09-02 Universite De Sherbrooke Predictive split-matrix quantization of spectral parameters for efficient coding of speech
US6081776A (en) * 1998-07-13 2000-06-27 Lockheed Martin Corp. Speech coding system and method including adaptive finite impulse response filter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5966688A (en) * 1997-10-28 1999-10-12 Hughes Electronics Corporation Speech mode based multi-stage vector quantizer

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
AARSKOG A: "A LONG-TERM PREDICTIVE ADPCM CODER WITH SHORT-TERM PREDICTION AND VECTOR QUANTIZATION", IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH & SIGNAL PROCESSING (ICASSP'91), TORONTO, CANADA, vol. 1, 14 May 1991 (1991-05-14) - 17 May 1991 (1991-05-17), IEEE, New York, USA, pages 37 - 40, XP000245161, ISBN: 0-7803-0003-3 *
CHO INHWAN ET AL: "Predictive pyramid vector quantisation of LSF parameters", ELECTRONICS LETTERS, IEE STEVENAGE, GB, vol. 34, no. 8, 16 April 1998 (1998-04-16), pages 735 - 736, XP006009612, ISSN: 0013-5194 *
OHMURO H ET AL: "VECTOR QUANTIZATION OF LSP PARAMETERS USING MOVING AVERAGE INTERFRAME PREDICTION", ELECTRONICS & COMMUNICATIONS IN JAPAN, PART III - FUNDAMENTAL ELECTRONIC SCIENCE, SCRIPTA TECHNICA. NEW YORK, US, vol. 77, no. 10, PART 3, 1 October 1994 (1994-10-01), pages 12 - 25, XP000527379, ISSN: 1042-0967 *
SKOGLUND J ET AL: "PREDICTIVE VQ FOR NOISY CHANNEL SPECTRUM CODING: AR OR MA?", IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP'97), MUNICH, GERMANY, vol. 2, 21 April 1997 (1997-04-21) - 24 April 1997 (1997-04-24), IEEE COMP. SOC. PRESS, USA, pages 1351 - 1354, XP000822706, ISBN: 0-8186-7920-4 *

Also Published As

Publication number Publication date
GB0017145D0 (en) 2000-08-30
GB2364870A (en) 2002-02-06
EP1172803A2 (en) 2002-01-16

Similar Documents

Publication Publication Date Title
RU2718425C1 (en) Speech decoder, speech coder, speech decoding method, speech encoding method, speech decoding program and speech coding program
EP1103955A3 (en) Multiband harmonic transform coder
EP0907258A3 (en) Audio signal compression, speech signal compression and speech recognition
JP5314720B2 (en) Audio compression and decompression apparatus having hierarchical bandwidth structure and method thereof
KR101059640B1 (en) Method and apparatus for speech restoration in distributed speech recognition system
US8396706B2 (en) Speech coding
EP0798696A3 (en) Speech processing method and apparatus
EP1736966A3 (en) Method for generating audio information
EP1209627A3 (en) Vector quantization method and apparatus
EP2265042A3 (en) Advanced processing based on a complex-exponential-modulated filterbank and adaptive time signalling methods
EP1179820A3 (en) Method of coding LSP coefficients during speech inactivity
EP1006510A3 (en) Signal encoding and decoding system
TW200933609A (en) Systems, methods, and apparatus for context processing using multiple microphones
JP4980325B2 (en) Wideband audio signal encoding / decoding apparatus and method
EP1315150A3 (en) Adaptive postfiltering methods and systems for decoding speech
IL186438A0 (en) Method and apparatus for vector quantizing of a spectral envelope representation
WO2002093551A3 (en) Method and system for line spectral frequency vector quantization in speech codec
WO2002033695A3 (en) Method and apparatus for coding of unvoiced speech
CN101261834A (en) Encoding device and encoding method
AU3934799A (en) Apparatus for estimating the pulmonary function, by analysing speech parameters
JPH09204199A (en) Method and device for efficient encoding of inactive speech
EP1320073A3 (en) Image decompression apparatus and method
EP1869664A2 (en) Voice conversion
DE60023913T2 (en) METHOD AND DEVICE FOR TESTING THE INFORMATION OBTAINED IN THE PHASE SPECTRUM
CN101620854B (en) Method, system and device for frequency band expansion

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20040715

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230520