Blind deconvolution using temporal predictability

A measure of temporal predictability is de-ned, and used for blind deconvolution of sound signals. The method is based on the observation that physical environments act as smoothing -lters, and therefore increase the predictability of signals. These smoothing e0ects can be reversed by a deconvolution -lter which minimises a measure of temporal predictability. This -lter is obtained as the closed form solution to an eigenvalue problem which scales as O(N ), where N is the number of -lter coe2cients. It is proven that the method minimises mutual information in a gaussian channel with feedback. Results are presented for sound signals. c © 2002 Elsevier Science B.V. All rights reserved.