Patent ID: 6678656
Filing Date: 2004-01-13
Classification: G10L

Abstract:
A method comprising:providing a digitized voice signal; using the digitized voice signal to provide: a first signal comprising only a first portion of the digitized voice signal; and a second signal comprising only a second portion of the digitized voice signal, wherein the first portion and the second portion of the digitized voice signal are at least partially different from one another; processing the first signal to reduce at least some noise as may be present in the first signal to provide a noise reduced first signal; processing the second signal to reduce at least some noise as may be present in the second signal to provide a noise reduced second signal, wherein processing the second signal to reduce at least some noise includes: preliminarily processing the second signal to reduce at least some noise as may be present in the second signal to provide a preliminarily noise reduced second signal; further processing the preliminarily noise reduced second signal, as a function at least in part of the first noise reduced signal, to provide the second noise reduced signal; using the first noise reduced signal to form a first set of spectral information; using the second noise reduced signal to form a second set of spectral information; forming speech recognition parameters based upon both the first and second set of spectral information, wherein the speech recognition parameters correspond to the digitized voice signal.