Global Patent Index - EP 0594480 B1

EP 0594480 B1 19990818 - Speech detection method

Title (en)

Speech detection method

Title (de)

Verfahren zur Erkennung von Sprachsignalen

Title (fr)

Procédé de détection de la parole

Publication

EP 0594480 B1 19990818 (FR)

Application

EP 93402522 A 19931013

Priority

FR 9212582 A 19921021

Abstract (en)

[origin: EP0594480A1] The method of the invention consists in: - detecting a voiced frame; - searching for the noise frames preceding this voiced frame; - constructing an auto-regressive model of the noise and a mean noise spectrum; - whitening the frames preceding the voicing; - searching for the actual start of speech in the whitened frames; - ridding the voiced frames of noise and parametrising them; and - searching for the actual end of speech.

IPC 1-7

G10L 3/00

IPC 8 full level

G10L 11/00 (2006.01); G10L 11/02 (2006.01); G10L 15/04 (2006.01); G10L 15/20 (2006.01); G10L 21/02 (2006.01); G10L 25/93 (2013.01)

CPC (source: EP US)

G10L 25/87 (2013.01 - EP US); G10L 21/0216 (2013.01 - EP US); G10L 25/27 (2013.01 - EP US); G10L 2025/932 (2013.01 - EP US); G10L 2025/937 (2013.01 - EP US)

Designated contracting state (EPC)

DE GB

DOCDB simple family (publication)

EP 0594480 A1 19940427; EP 0594480 B1 19990818; DE 69326044 D1 19990923; DE 69326044 T2 20000706; FR 2697101 A1 19940422; FR 2697101 B1 19941125; JP H06222789 A 19940812; US 5572623 A 19961105

DOCDB simple family (application)

EP 93402522 A 19931013; DE 69326044 T 19931013; FR 9212582 A 19921021; JP 28560893 A 19931021; US 13974093 A 19931021