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Adaptive network for in-band signal separation

  • US 5,150,323 A
  • Filed: 08/11/1989
  • Issued: 09/22/1992
  • Est. Priority Date: 08/11/1989
  • Status: Expired due to Term
First Claim
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1. A signal processor for separating a composite signal into at least one of its constituent signals, said processor comprising:

  • means for dividing said composite signal into discrete sampled portions;

    a plurality of neurons capable of receiving signals and producing an output signal said neurons including input neurons adapted to receive said sampled portions of said composite signal;

    a plurality of synaptic connection means providing a weighted interconnection between selected ones of said neurons;

    means for training said processor to produce an output that approximates at least one of said constituent signals, said training means including;

    (a) means for presenting a composite input training signal to selected ones of said neurons;

    (b) means for presenting a desired output, consisting of at least one of said constituent signals, to selected ones of said neurons; and

    (c) means for changing the strength of said synaptic connection means to cause said signal processor to produce said desired output in response to said training signal; and

    filter means for generating both low frequency and high frequency representations of said composite signal to present to said input neurons, wherein said low frequency representation includes a larger portion of said composite signal than said high frequency representation; and

    wherein said desired output consists of high frequency representation of at least one of said constituent signals, whereby said processor is capable of receiving both a high frequency and a low frequency portion of said composite signal during training and during processing.

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