Global patent index - EP 0971338 A1

EP 0971338 A1 2000-01-12 - METHOD AND DEVICE FOR CODING LAG PARAMETER AND CODE BOOK PREPARING METHOD

Title (en)

METHOD AND DEVICE FOR CODING LAG PARAMETER AND CODE BOOK PREPARING METHOD

Title (de)

VERFAHREN UND VORRICHTUNG ZUR KODIERUNG VON VERZÖGERUNGSPARAMETERN UND VERFAHREN ZUR HERSTELLUN EINES CODE-BUCHS

Title (fr)

PROCEDE ET DISPOSITIF DE CODAGE A RETARD PARAMETRAL ET PROCEDE DE PREPARATION DE TABLE DE CODAGE

Publication

EP 0971338 A1 (EN)

Application

EP 99901171 A

Priority

  • JP 9900294 W
  • JP 2933298 A

Abstract (en)

Lag parameter encoding section 215b finds a code corresponding to a lag parameter value using lag parameter codebook 215a. The decoding side decodes the lag parameter value corresponding to the lag parameter encoded by the encoding side using same lag parameter codebook 215a and outputs it. Lag parameter codebook 215a shows a relationship between a lag parameter value and corresponding code P and is generated in such a way that the rate of lag parameter code, which has a decoded lag parameter value with a bit error close to n times (including one time) or 1/n times(n is integer) of the decoded value without bit error, increases. This makes it possible to suppress deterioration of the perceptual quality of the decoded speech when a bit error occurs with the lag parameter. <IMAGE>

IPC 1-7 (main, further and additional classification)

G10L 9/14; G10L 9/18

IPC 8 full level (invention and additional information)

G10L 19/005 (2013.01); G10L 19/08 (2013.01)

CPC (invention and additional information)

G10L 19/005 (2013.01); G10L 19/08 (2013.01)

Citation (search report)

See references of WO 9938157A1

Designated contracting state (EPC)

DE FR GB IT NL SE

EPO simple patent family

EP 0971338 A1 20000112; AU 2075199 A 19990809; CA 2283203 A1 19990729; CN 1256001 A 20000607; WO 9938157 A1 19990729

INPADOC legal status

2002-07-17 [18W] WITHDRAWN

- Date of withdrawal: 20020522

2000-01-26 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991129

2000-01-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT NL SE