Patent ID: 8625826
Filing Date: 2014-01-07
Classification: H04R

Abstract:
1. An apparatus for background noise estimation, the apparatus comprising: first and second hearing devices for binaural supply of a hearing impaired person, each of said hearing devices having a first and a second omnidirectional microphone and said first and second microphones of each of said hearing devices connected to each other electrically to form a first and a second directional microphone having a first and a second monaural directional characteristic respectively, one of said first and second microphones of said first hearing device connected together wirelessly with one of said first and second microphones of said second hearing device to form a directional microphone having a binaural directional characteristic, and for estimating background noise, levels of output signals from said first and second directional microphones having the monaural directional characteristic are combined with a level of an output signal from said directional microphone having the binaural directional characteristic; wherein the binaural directional characteristic and at least one of the first and the second monaural directional characteristic form a zero point in a direction of a useful sound source.