Patent ID: 7313241

Claim:
A method for adjusting a hearing aid device configured to be worn at the body of a person, said hearing aid device having a microphone system that, when said hearing-aid device is worn, is disposed outside of the auditory canals of the person, and having a signal processor connected to a filter arrangement, and to said microphone system, comprising the steps of: subjecting a test object to an acoustic signal originating from an external signal source remote from the test object; receiving the acoustic signal at the test object at a location on the test object corresponding to a location on the person at which the microphone system is disposed when the hearing aid device is worn by the person, thereby obtaining a first received signal; also receiving said acoustic signal at an auditory canal of the test object, thereby obtaining a second received signal; determining a correction function from said first and second received signals that, when applied to said first received signal, at least approximately converts said first received signal into said second received signal; and adjusting said filter arrangement in said signal processor to apply said correction function to said microphone signal before processing in said signal processor, to produce an adiusted hearing aid device that, despite the microphone system, when worn, being outside of the auditory canals of the person, simulates an acoustic signal received in the auditory canals.