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Hearing aids power consumption

To: AUDITORY@xxxxxxxxxxxxxxx
Subject: Hearing aids power consumption
From: Yi-Wen Liu <jacobliu@xxxxxxxxx>
Date: Wed, 17 Dec 2008 21:09:12 +0000
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Dear all,

We all know that hearing-aid batteries run out quickly. I am wondering whether the battery power is mainly consumed by the digital signal-processing circuitry, or by the analog amplifier and receiver? Does anybody know an approximate percentage, say 60% DSP and 40% analog (just my random guess)?

Best regards,
Yi-Wen Liu
Boys Town National Research Hospital

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