| 摘要 |
Disclosed is an apparatus for and a method of filtering noise from a mixed sound signal to obtained a filtered target signal, comprising the steps of inputting ( 100 ) the mixed signal through a pair of microphones ( 10 ) into a first channel ( 15 a) and a second channel ( 15 b), separately Fourier transforming ( 110 ) each said mixed signal into the frequency domain, computing ( 130 ) a signal short-time spectral amplitude |S| from said transformed signals, computing ( 140 ) a signal short-time spectral complex exponential e<SUP>i arg(S) </SUP>from said transformed signals, where arg(S) is the phase of the target signal in the frequency domain, computing ( 150 ) said target signal S in the frequency domain from said spectral amplitude and said complex exponential.
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