Patent ID: 9093077
Filing Date: 2015-07-28
Classification: G10L

Abstract:
1. A reverberation suppression device comprising: an analyzer configured to analyze a change in frames of an input audio signal over time in a spectra power of the input audio signal obtained from a microphone in response to a sound input, and thereby compute a decrease per unit time in the spectra power of the input audio signal in a reverb segment following an end of a segment in which sound is capable of being generated, the decrease per unit time is computed on basis of a peak position of a histogram computed by counting occurrences of changes in the spectra power of frames of the input audio signal; and a suppression controller configured to control, for an output audio signal on basis of the input audio signal, a suppression gain which indicates a rate at which the input audio signal is attenuated, on basis of the peak position of the histogram.