Patent ID: 7940945
Filing Date: 2011-05-10
Classification: H04R

Abstract:
1. A method for operating a receiver unit for receiving audio signals from a remote transmission unit via a wireless audio link, comprising: connecting an audio signal output of said receiver unit to an audio signal input of a hearing instrument comprising means located at a user's ear or in a user's ear canal for stimulating said user's hearing according to the audio signals from said receiver unit and a microphone arrangement; measuring by means included in said receiver unit an impedance of said audio signal input of said hearing instrument; and adjusting an impedance of said audio signal output of said receiver unit according to the measured impedance of said audio signal input of said hearing instrument; and wherein said connecting step comprises electrically connecting the audio signal output of the receiver unit to the audio input of the hearing instrument via an interface which also mechanically connects the receiver unit to the hearing instrument.