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Silicon microphone for hearing device e.g. behind-the-ear hearing aid, has membrane, which is arranged in open chamber towards surrounding of microphone, and acceleration sensor detecting vibration caused by impact sound in microphone
Silicon microphone for hearing device e.g. behind-the-ear hearing aid, has membrane, which is arranged in open chamber towards surrounding of microphone, and acceleration sensor detecting vibration caused by impact sound in microphone
The microphone (10) has a membrane (22), which is arranged in an open chamber (18) towards a surrounding of the microphone. An acceleration sensor detects vibration caused by an impact sound (24) in the microphone. The acceleration sensor comprises another membrane (28) that is arranged in an enclosed chamber (30). Walls (32) of the enclosed chamber are formed from a rigid material. A standing wave is produced in another enclosed chamber by an airborne sound from the surrounding through the former membrane. The latter membrane is arranged in a predetermined area. An independent claim is also included for a method for determining a signal component of an airborne sound and/or an impact sound in a microphone signal of a hearing device.
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