Patent ID: 7818168

Claim:
A method of measuring the degree of enhancement made to a voice signal, comprising the steps of: a) receiving, on a digital signal processor, the voice signal; b) identifying, on the digital signal processor, a user-definable number of formant regions in the voice signal; c) computing, on the digital signal processor, stationarity for each formant region identified in the voice signal; d) enhancing, on the digital signal processor, the voice signal; e) identifying, on the digital signal processor, formant regions in the enhanced voice signal that correspond to those identified in step (b); f) computing, on the digital signal processor, stationarity for each formant region identified in the enhanced voice signal; g) comparing, on the digital signal processor, corresponding results of step (c) and step (f); and h) calculating, on the digital signal processor, at least one user-definable statistic of the results of step (g) as the degree of enhancement made to the voice signal.