Damping filter for a hearing device
AssigneeGN Hearing A/S
InventorsGojko Obradovic, Poul Rosenkilde Kristensen, Finn Hansen
Life of this patent
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Abstract
The present disclosure relates to a hearing device having a microphone, where most of the microphone is shielded by an outer shielding of the hearing device. An inlet in the outer shielding allows sound from outside the hearing aid to travel to the microphone to be picked up by it. However, the combination of the microphone and the inlet results in the microphone becoming more sensitive at some audible frequencies. A damping filter positioned in connection with the inlet acts to counter the acoustic effect of the inlet by damping sound in the audible frequency range, where the microphone has increased sensitivity.
Claims19
A hearing device comprising:
- a microphone;
- a shielding, the shielding comprising a channel configured to conduct sound from outside of the hearing device, the channel having an outer opening through which the sound from the outside can enter, and an inner opening for outputting the sound;
- and
- a damping filter positioned in connection with the channel such that the sound being conducted by the channel can pass through the damping filter, wherein the damping filter is configured to acoustically dampen the sound before the sound arrives at the microphone, so as to at least partially counteract an increased sensitivity of the microphone at audible frequencies due to acoustic effect of the channel.
A method performed by a hearing device, the hearing device comprising a microphone, and a shielding, the shielding comprising a channel, the channel having an outer opening and an inner opening, the method comprising:
- receiving sound by the outer opening of the channel;
- conducting the sound by the channel;
- outputting the sound via the inner opening of the channel;
- and
- acoustically dampening the sound by a damping filter before the sound arrives at the microphone, so as to at least partially counteract an increased sensitivity of the microphone at audible frequencies due to an acoustic effect of the channel.
Dependencies are inferred from the claim text.