Patent ID: 6954745
Filing Date: 2005-10-11
Classification: G10L,H04R

Abstract:
1. An acoustic signal processing computer apparatus comprising: one or more receivers for receiving a set of signal values representative of a combination of a plurality of acoustic signals generated by a plurality of acoustic signal sources; a memory for storing a predetermined function which gives, for a given set of received signal values, a probability density for parameters of a respective signal model, each of which is assumed to have generated a respective one of the acoustic signals represented by the received signal values; an applicator operable to apply the set of received signal values to said stored function to generate said probability density function; a processor operable to process said probability density function to derive samples of parameter values from said probability density function; and an analyser operable to analyse at least some of said derived samples of parameter values to determine, for at least one of said sources, parameter values that are representative of the acoustic signals generated by said at least one of said sources.