RUBBING SOUND PREVENTION HEARING AID
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United States of America Patent
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Issued Date -
Jul 23, 2015
app pub date -
Aug 8, 2013
filing date -
Aug 13, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
There is provided a hearing aid suppressing noise or howling caused by rubbing between a case of the hearing aid and an external object, and outputting clear intelligible sound from an earphone. The hearing aid 10 amplifies sound collected by a sound microphone 16 and outputs the amplified sound from the earphone 19. The hearing aid 10 includes the sound microphone 16 configured to collect the sound from outside and convert the sound to an electric signal, a noise microphone 17 configured to collect the noise in a casing of the hearing aid 10 and convert the noise to an electric signal, a subtraction unit 22 configured to subtract a noise microphone electric signal being the electric signal from the noise microphone 17 from a sound microphone electric signal being the electric signal from the sound microphone 16, and the earphone 19 configured to convert an electric signal obtained after the subtraction to sound and output the converted sound.
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