Patent Document ID: 20030023430
Application ID: 10111974
Patent Status: 0

Claim One:
1. A speech processing apparatus comprising: frequency dividing means for dividing a speech spectrum of an input speech signal per predetermined frequencies basis; speech identifying means for identifying whether or not the speech spectrum includes a speech component based on the speech spectrum divided in frequencies in the frequency dividing means and a noise base that is a spectrum of a noise component; first comb filter generating means for generating a first comb filter for attenuating spectral power per predetermined frequencies basis based on a result identified in the speech identifying means; noise suppressing means for suppressing the noise component of the speech spectrum using the first comb filter; frequency combining means for combining the speech spectrum with the noise component suppressed to a speech spectrum continuous in a frequency region; and noise base estimating means for updating the noise base using the speech spectrum identified in the speech identifying means as a speech spectrum with no speech component included therein.