Subject: Re: Hearing aids power consumption From: David Mountain <dcm@xxxxxxxx> Date: Wed, 17 Dec 2008 16:33:53 -0500 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>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 -------------------------------------------------------------------- David C. Mountain, Ph.D. Professor of Biomedical Engineering Boston University 44 Cummington St. Boston, MA 02215 Email: dcm@xxxxxxxx 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 >