| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an audio signal processing apparatus from which sufficient audio processing results can be obtained, even if the microphone interval is large.SOLUTION: A device for suppressing the noise components included in an input audio signal, captured by means of a pair of microphones, by coherence filtering has means for calculating the coherence filter coefficients, means for estimating the direction of arrival of an interference sound contained in the input audio signal, means for obtaining a correction gain corresponding to the direction of arrival thus estimated, and correcting the coherence filter coefficients of low band by that correction gain, and means performing coherence filtering by applying the coherence filter coefficients of the entire band including the coherence filter coefficients of low band thus corrected.</p> |
