INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD AND PROGRAM

摘要

n information processing device includes: an estimating section which estimates an amplitude frequency function from a first signal output to a speaker and a second signal input from a microphone; a generating section which generates an estimated echo signal from the first signal and the amplitude frequency function; and a suppressing section which suppresses the estimated echo signal from the second signal, wherein the estimating section changes a coefficient of the amplitude frequency function on the basis of the correlation between the estimated amplitude frequency function and a short-time average amplitude frequency function.