Patent ID: 6434246
Filing Date: 2002-08-13
Classification: H04R

Abstract:
A hearing aid comprising:a microphone for converting sound into an audio signal; feedback cancellation means including means for estimating a physical feedback signal of the hearing aid, and means for modelling a signal processing feedback signal to compensate for the estimated physical feedback signal; subtraction means, connected to the output of the microphone and the output of the feedback cancellation means, for subtracting the signal processing feedback signal from the audio signal to form a compensated audio signal; hearing aid processing means, connected to the output of the subtractor, for processing the compensated audio signal; and speaker means, connected to the output of the hearing aid processing means, for converting the processed compensated audio signal into a sound signal; wherein said feedback cancellation means forms a feedback path from the output of the hearing aid processing means to the input of the subtracting means; and wherein said hearing aid processing means includes compression means for performing audio compression.