Patent ID: 6691073
Filing Date: 2004-02-10
Classification: G01S,G06K,G10L,H03H

Abstract:
An acoustic signal discrimination system for discriminating at least one input signal M into at least one output signal Y, the at least one input signal comprising at least one function of at least one source signal affected by a medium, the at least one source signal associated with at least one source, the at least one output signal estimating the at least one source signal, the system comprising:a processor for defining and computing a plurality of parameters of a signal separation architecture, the architecture comprising a feedback state space representation establishing a relationship between the input signals and the output signals as {dot over (X)}i=AiXi+BiY for 1&lE;iZ=&Sum;i=1L&it;â€ƒ&it;Ci&it;Xi+DYâ€ƒU=Mâˆ’Z where Xi represents a state vector of the medium, L is a number of state vectors, Ai and Bi are state update matrices, Y is a function of U, and Ci and D are matrices updated according to{dot over (C)}i=&ggr;Ci(âˆ’I+fa(Y)XT) {dot over (D)}=&eegr;D(âˆ’I+fa(Y)YT) where I is an identity matrix, &ggr; and &eegr; are constants, and fa(Â·) is a non-linear odd function.