Patent ID: 8351554

Claim:
An adaptive method of extracting at least one of desired electro magnetic wave signals, sound wave signals, and any other signals from a mixture of signals and suppressing noise and interfering signals to produce enhanced signals corresponding to desired signals from a desired source, said method comprising the steps of: said desired signals being predetermined by one or more parameters, wherein one of said one or more parameters is the shape of a statistical probability density functions (pdf) of said desired signals; said one or more parameters of the desired signals distinguishing from parameters of said noise and interfering signals; received signal data from said desired source and noise and interfering signals being collected through at least one sensor as continuous-time input signals, sampling said continuous-time input signals to form discrete-time input signals, or processing correspondingly discrete-time signals; transforming said signal data into a set of sub-bands to create sub-band signals; at least one of attenuating for each time-frame of input signals in each sub-band for all signals such that desired signals are attenuated less than noise and interfering signals and/or amplifying for each time-frame of input signals in each sub-band for all signals such that the desired signals are amplified, and that they are amplified more than noise and interfering signals; updating filter coefficients for each time-frame of input signals in each sub-band so that an error criterion between the filtered input signals and transformed output signals is minimized; and said sub-band signals being filtered by a predetermined set of sub-band filters producing a predetermined number of output signals each one of them favoring said desired signals on the basis of the distinguishing parameters, wherein the parameter for distinguishing between the different signals in the mixture is based on the pdf; and reconstructing sub-band output signals with an inverse transformation.