Appeal No. 1998-2939
Application 08/129,077
Representative claim 12 is reproduced as follows:
12. A method for analyzing a full voiced utterance in
speech, comprising the steps of:
recording speech;
dividing the recorded speed into plural time frames;
finding roots for a denominator polynomial for each of
the plural time frames;
identifying a complete voiced region in the plural time
frames of the divided recorded speech;
selecting in said plural successive time frames of said
voiced region a starting time frame which contains a low
frequency energy peak indicative of a center of a vowel sound;
using roots of the starting time frame as seeds for
producing plural root tracks;
extending the plural root tracks by linking corresponding
roots of each preceding time frame in the complete voiced
region to corresponding root tracks and by linking
corresponding roots of each subsequent time frame in the
complete voiced region to corresponding root tracks; and
assigning a number of the plural root tracks to said
number of formant frequencies representing the complete voiced
region after the root tracks have been fully extended.
The examiner relies on the following references:
Papamichalis et al. 4,625,286 Nov. 25, 1986
(Papamichalis)
Willems 0 275 584 July 27, 1988
(European Application)
Parsons, Voice and Speech Processing, Copyright 1987 by
-2-
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007