Re: Hearing aids power consumption

[David Mountain <dcm@xxxxxx>]

According to Texas Instruments, digital and analog hearing aids have about
the same power consumption.  This suggests that most of the power is
consumed by the analog electronics.

http://focus.ti.com/docs/solution/folders/print/273.html

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David C. Mountain, Ph.D.
Professor of Biomedical Engineering

Boston University
44 Cummington St.
Boston, MA 02215

Email:   dcm@xxxxxx
Website: http://www.bu.edu/dbin/bme/faculty/?prof=dcm
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On Wed, 17 Dec 2008, Yi-Wen Liu wrote:

> 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
>