COHERENT ICA: IMPLICATIONS FOR AUDITORY SIGNAL PROCESSING

In this paper, we describe a novel algorithm, called Coherent In-dependent Components Analysis, and referred to as Coherent ICA for short. The algorithm, rooted in information-theoretic learn-ing, exploits the combined use of the Infomax and Imax princi-ples. Experimental results, based on the auditory coding of natural sounds, are presented that demonstrate the ability of coherent ICA to extract the envelope of amplitude-modulated sounds in a man-ner similar to the behaviour of neurons in the cochlear nucleus and inferior colliculus. 1