Speech recognition apparatus

Details Speech recognition apparatus Speech recognition apparatus

G - Physics

10

L

354/54

G10L 1/04 (1980.01)

Patent

CA 1180813

ABSTRACT OF THE DISCLOSURE In the speech recognition apparatus disclosed herein, an audio signal is digitized and a succession of short-term power spectra are generated over a time interval corresponding to a spoken word. The short-term power spectra are frequency band equalized as a function of the peak amplitude occurring in each frequency band over the word interval. The changes in amplitude in each frequency band are weighted and summed to obtain a cumulative measure of subjective time and then a limited number of frequency band equalized spectra are selected as representing equal intervals of subjective time so as to supress variations in rate of articulation. The selected spectra are then non-linearly scaled in amplitude and transform- ed so as to maximize the separation between phonetically different sounds. By means of a maximum-likelihood method, the transformed selected spectra are compared with a data base representing a vocabulary to be recognized.

268804

Affiliated with

Also associated with

Rating

Speech recognition apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Speech recognition apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speech recognition apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1211570