Dual-microphone noise reduction method and device for medical acoustic signals

Dual-microphone noise reduction method and device for medical acoustic signals

  • CN 104,581,516 A
  • Filed: 10/15/2013
  • Published: 04/29/2015
  • Est. Priority Date: 10/15/2013
  • Status: Active Application
First Claim
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1. a dual microphone noise-eliminating method for medical science acoustical signal, is characterized in that, comprising:

  • Obtain medical science acoustical signal data and the environmental noise data of band noise, described medical science acoustical signal data and described environmental noise data are processed respectively, obtains time frequency unit;

    To described time frequency unit computation of characteristic values;

    According to the relation of described characteristic value and masking threshold, generate masking value, marking described time frequency unit traditional Chinese medicine acoustical signal is main part;

    The time frequency unit of masking value to the medical science acoustical signal data of described band noise according to generating is sheltered, and retaining medical science acoustical signal is main part, is reconstructed the data after sheltering, and obtains de-noising result.

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