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Re: Hearing aids power consumption

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.



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
Phone:   (617) 353-4343
FAX:     (617) 353-6766
Office:  ERB 413
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