Speech processing apparatus, method, and program of reducing reverberation of speech signals

摘要

A speech processing apparatus that collects sound signals. With each of the collected sound signals, the apparatus may estimate a direction of a sound source, and select an extension filter that is applied to each sound signal. The extension filter may correspond to the estimated sound source of each of the sound signals. In addition, each of the sound signals may be corrected using the extension filter, and a reverberation reduction of the corrected sound signals and the collected sound signals may be performed.

主权项

1. A speech processing apparatus, comprising:
a sound collecting unit that collects sound signals; a sound source direction estimating unit that estimates a direction of a sound source of each sound signal collected by the sound collecting unit and selects an extension filter which is to be applied to the each sound signal and corresponds to the estimated sound source of the each sound signal; a reverberation reducing filter calculating unit that corrects the each sound signal using the extension filter; and a reduction processing unit that performs a reverberation reduction using the sound signals corrected by the reverberation reducing filter calculating unit and the sound signals collected by the sound collecting unit.