G - Physics – 10 – L
Patent
G - Physics
10
L
G10L 11/02 (2006.01) G10L 21/02 (2006.01) H03H 21/00 (2006.01)
Patent
CA 2209409
This invention relates to an improved adaptive spectral estimator for estimating the spectral components in a signal containing both an information signal, such as speech and noise. The improvements relate to a noise power estimator (3) and a computationally efficient gain calculation method. The adaptive spectral estimator is particularly suited to implementation using digital signal processing and can be used to provide improved spectral estimates of the information signal. It can be combined with a speech or voice recognition system. A further object of the invention is to provide an accurate method for voice detection.
L'invention porte sur un estimateur spectral adaptatif servant à l'estimation des composants spectraux d'un signal comportant une information double, vocale et sonore. L'amélioration a trait à un estimateur de la puissance sonore (3) et à un procédé de calcul du gain efficace sur le plan des calculs. L'estimateur spectral adaptatif qui est particulièrement adapté à des installations recourant au traitement de signaux numériques peut fournir des estimations spectrales améliorées du signal d'information et être combiné à un système de reconnaissance de la parole ou de la voix. L'invention porte également sur un procédé précis de détection de la voix.
Davis Kenneth P.
Eatwell Graham P.
Kirby Eades Gale Baker
Noise Cancellation Technologies Inc.
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