Global Patent Index - EP 0484339 A4

EP 0484339 A4 19930505 - DIGITAL SPEECH CODER WITH VECTOR EXCITATION SOURCE HAVING IMPROVED SPEECH QUALITY

Title (en)

DIGITAL SPEECH CODER WITH VECTOR EXCITATION SOURCE HAVING IMPROVED SPEECH QUALITY

Publication

EP 0484339 A4 19930505 (EN)

Application

EP 90908908 A 19900502

Priority

  • US 9002469 W 19900502
  • US 37054189 A 19890623

Abstract (en)

[origin: WO9101545A1] In a vector excitation source digital speech coder utilizing vector excitation, candidate excitation sources (111, 121) are considered independent of certain pitch parameters. Once a particular excitation source has been selected, the excluded pitch parameter may then be optimized, resulting in an overall improvement in speech quality.

IPC 1-7

G10L 5/00

IPC 8 full level

G10L 19/12 (2013.01)

CPC (source: EP KR)

G10L 13/00 (2013.01 - KR); G10L 19/12 (2013.01 - EP); G10L 2019/0005 (2013.01 - EP); G10L 2019/0011 (2013.01 - EP); G10L 2019/0013 (2013.01 - EP)

Citation (search report)

  • [X] ICASSP'88 (1988 INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, New York, 11th - 14th April 1988), vol. 1, pages 147-150, IEEE, New York, US; P. KABAL et al.: "Synthesis filter optimization and coding: applications to CELP"
  • [A] ICASSP'88 (1988 INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, New York, 11th - 14th April 1988), vol. 1, pages 155-158, IEEE, New York, US; W.B. KLEIJN et al.: "Improved speech quality and efficient vector quantization in SELP"
  • [AP] ICASSP'90 (1990 INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, Albuquerque, New Mexico, 3rd - 6th April 1990), vol. 1, pages 485-488, IEEE, New York, US; D. DYMARSKI et al: "Optimal and sub-optimal algorithms for selecting the excitation in linear predictive coders"
  • [AP] ICASSP'90 (1990 INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, Albuquerque, New Mexico, 3rd - 6th April 1990), vol. 1, pages 461-464, IEEE, New York, US; I.A. GERSON et al.: "Vector sum excited linear prediction (VSELP) speech coding at 8 KBPS"
  • See references of WO 9101545A1

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

WO 9101545 A1 19910207; AU 5735990 A 19910222; AU 638462 B2 19930701; BR 9007467 A 19920616; CA 2060310 A1 19901224; CA 2060310 C 20010717; CN 1023160 C 19931215; CN 1048278 A 19910102; DE 69032026 D1 19980312; DE 69032026 T2 19980917; EP 0484339 A1 19920513; EP 0484339 A4 19930505; EP 0484339 B1 19980204; IL 94119 A0 19910131; IL 94119 A 19960618; KR 920702787 A 19921006; KR 950003557 B1 19950414; NZ 234180 A 19931125

DOCDB simple family (application)

US 9002469 W 19900502; AU 5735990 A 19900502; BR 9007467 A 19900502; CA 2060310 A 19900502; CN 90103020 A 19900619; DE 69032026 T 19900502; EP 90908908 A 19900502; IL 9411990 A 19900418; KR 910701947 A 19911223; NZ 23418090 A 19900621