AUDIO SIGNAL DEREVERBERATION

摘要

A method of estimating the reverberations in an acoustic signal (y) comprises the steps of determining the frequency spectrum (Y) of the signal (y), providing a first parameter (a) indicative of the decay of the reverberations part ( r) of the signal over time, and providing a second parameter (ß) indicative of the amplitude of the direct part (d) of the signal relative to the reverberations part (r ). An estimated frequency spectrum (R) of the reverberations signal (r ) is produced using the frequency spectrum (Y) of a previous frame, the first parameter (a), and the second parameter (ß). The second parameter (ß). The second parameter (ß) is preferably inversely proportional to the early-to-late ratio of the signal (y).