REVERBERATION FILTER ESTIMATION METHOD AND DEREVERBERATION FILTER ESTIMATION METHOD, AND A SINGLE-CHANNEL SPEECH DEREVERBERATION METHOD USING THE DEREVERBERATION FILTER

摘要

According to the present invention, a method for estimating an echo filter for voice echo removal with respect to a single channel comprises the following steps: receiving priori information on a probability density function of an echo filter, and measuring a log value of an aposteriori probability density function of the echo filter based on the probability density function of the echo filter; and estimating the echo filter by maximizing the log value of the aposteriori probability density function of the echo filter.