Patent ID: 8494201

Claim:
A hearing aid comprising: an ambient microphone configured to receive and convert environmental sound into an electronic input signal; a hearing loss processor configured to process the electronic input signal in accordance with a hearing loss of a user, and generate an electronic output signal; a receiver; an ear canal microphone configured for converting ear canal sound pressure into an ear canal signal; an occlusion suppressor for reception and processing of the ear canal signal and for transmitting an occlusion suppression signal; a signal combiner configured for combining the occlusion suppression signal and the electronic output signal to form a combined signal, and for transmitting the combined signal to the receiver; a housing for housing the processor; an ear piece coupled to the housing; and an acoustical vent extending through or around the housing or the ear piece, wherein the acoustical vent has a high pass cut-off frequency; wherein the receiver is configured to receive the combined signal, and convert the combined signal into an acoustic output signal; and wherein the receiver has a frequency response with a lower cut-off frequency; wherein a difference between the lower cut-off frequency of the frequency response of the receiver and the high pass cut-off frequency of the acoustical vent is larger than one octave such that the high pass cut-off frequency of the acoustical vent is a higher cut-off frequency.