Patent ID: 8886526
Filing Date: 2014-11-11
Classification: G10L

Abstract:
1. A method of processing signals with a signal processing device, comprising: receiving a plurality of time domain mixed signals in a signal processing device, each time domain mixed signal including a mixture of original source signals; performing a Fourier-related transform on each time domain mixed signal with the signal processing device to generate time-frequency domain mixed signals corresponding to the time domain mixed signals; and performing independent component analysis on the time-frequency domain mixed signals to generate at least one estimated source signal corresponding to at least one of the original source signals, wherein the independent component analysis utilizes mixed multivariate probability density functions in which each said mixed multivariate probability density function is a weighted mixture of a plurality of component multivariate probability density functions, wherein different component multivariate probability density functions in each said mixed multivariate probability density function have different parameters which correspond to frequency bins for different source signals and/or different time segments.