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Noise suppressing apparatus and its adjusting apparatus

  • US 5,335,312 A
  • Filed: 09/04/1992
  • Issued: 08/02/1994
  • Est. Priority Date: 09/06/1991
  • Status: Expired due to Fees
First Claim
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1. A noise suppressing apparatus comprising:

  • one channel of voice and additional noise;

    frequency band dividing means for dividing an input signal from only said one channel with voice and additional noise into a plurality of frequency bands with each frequency band including a voice component and an additional noise component within the respective frequency band of the input signal;

    a neural network, having weight coefficients to emphasize voice and suppress noise, including an input layer having a plurality of units connected with the frequency band dividing means, a hidden layer having a plurality of units connected with the input layer units, and an output layer of a single unit connected with the hidden layer units,wherein output signals with noises being suppressed are obtained from the single unit of the output layer.

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