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Abstract

A noise suppress processing apparatus has a speech input section for detecting speech uttered by the speaker at different positions, an analyzer section for obtaining frequency components in units of channels by frequency-analyzing speech signals in units of speech detecting positions, a first beam former processor section for obtaining target speech components by suppressing noise in the speaker direction by filtering the frequency components in units of channels using filter coefficients, which are calculated to decrease the sensitivity levels in directions other than a desired direction, a second beam former processor section for obtaining noise components by suppressing the speech of the speaker by filtering the frequency components for the plural channels obtained by the analyzer section to set low sensitivity levels in directions other than a desired direction, an estimating section for estimating the noise direction from the filter coefficients of the first beam former processor section, and estimating the target speech direction from filter coefficients of the second beam former processor section, and a correcting section for correcting a first input direction as the arrival direction of the target speech to be input in the first beam former processor section on the basis of the target speech direction estimated by the estimating section, and correcting a second input direction as the arrival direction of noise to be input in the second beam former processor section on the basis of the noise direction estimated by the estimating section.

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First Claim