Patent ID: 6169970
Filing Date: 2001-01-02
Classification: G10L

Abstract:
A method for coding an original signal representative of speech, the method comprising the steps of: a. generating a plurality of distinct trial original signals by varying the original signal a corresponding plurality of times, each of said distinct trial original signals corresponding to and being a different variation of the original signal; b. for each of the plurality of distinct trial original signals, performing an encoding of said trial original signal to generate a corresponding encoded trial original signal, performing a decoding of said corresponding encoded trial original signal to generate a corresponding synthesized trial original signal, and comparing said trial original signal to said corresponding synthesized trial original signal to determine a corresponding measure of similarity therebetween; c. selecting one of said trial original signals for use in coding the original signal based on an evaluation of one or more of said measures of similarity; and d. coding the original signal based on the encoded trial original signal corresponding to the selected trial original signal.