Automatic switching between omnidirectional and directional microphone modes in a hearing aid

Automatic switching between omnidirectional and directional microphone modes in a hearing aid

  • CN 101,433,098 A
  • Filed: 03/02/2007
  • Published: 05/13/2009
  • Est. Priority Date: 03/03/2006
  • Status: Active Grant
First Claim
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1. One kind in binaural hearing aid omni-directional (OMNI) and directive property (DIR) microphone modes between the method that automaticallyes switch, described binaural hearing aid comprises first microphone system that is used to provide first input signal, second microphone system that is used to provide second input signal, wherein, described first microphone system be fit to be placed into the user first ear place or within, described second microphone system be fit to be placed into described user second ear place or within, described method comprises:

  • -measuring process wherein, is monitored the frequency spectrum and the time modulation of described first and second input signals;

    -appraisal procedure, wherein, by frequency spectrum and the time modulation of assessing described first and second input signals for each described calculated signals voice intelligibility assessment index;

    -operating procedure wherein, is selected the microphone modes of described first and described second microphone system of described binaural hearing aid according to the assessment index that is calculated.

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