| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a newly improved speech processing device, speech processing method and program which can suppress howling very well even when a reflection sound or a non-howling sound is generated. <P>SOLUTION: The speech processing device comprises a frequency region conversion unit which converts a sound signal fed from a microphone into a frequency region every frame and a gain adjustment unit which adjusts gain in a sound signal converted into the frequency region every band. The gain adjustment unit acquires an autocorrelation value of the power of the sound signal between frames every band and sets a gain adjustment amount according to the autocorrelation value thus acquired. <P>COPYRIGHT: (C)2012,JPO&INPIT |
