Reverberation analysis device and the reverberation analysis method

摘要

PROBLEM TO BE SOLVED: To make it easy to learn whether or not there is a lot of a reverberation component included in an acoustic signal.;SOLUTION: An analysis processing unit 34 calculates a reverberation ratio Gr(k, m) according to a ratio of a reverberation component in an acoustic signal x(t) and an initial sound ratio Gd(k, m) according to a ratio of an initial sound component other than the reverberation component. A display control unit 40 has a display device 16 display a reverberation evaluation image 72 indicating the ratio of the reverberation component or the initial sound component of the acoustic signal x(t). The reverberation evaluation image 72 includes a second coordinate area 722 about which the time axis T and frequency axis F are set. Each of display modes of a plurality of coordinate points in the second coordinate area 722 is set according to the initial sound ratio Gd(k, m) calculated in relation to a unit period corresponding to the coordinate point on the time axis T and a frequency corresponding to the coordinate point on the frequency axis F.;COPYRIGHT: (C)2013,JPO&INPIT