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Anyone using the Ultra Low Power audio DSP's in non audio applcations?

Started by steve August 12, 2006
I'm referring to the Ultra Low Power DSP's customized for hearing aids
and headsets, they are very small, very fast processors and use very
little power (0.05mW/MIPS) and run on 1.2 volts, quite impressive

here is one
http://www.amis.com/products/dsp/belasigna_200.html

CoolFlux in another one, but they only license the cores

www.coolfluxdsp.com

I'm just becoming familar with these type of processors, although they
appear to have hardwired semi programmable filters (coprocessor), it
also seems to have a generic DSP,RAM, A/D, D/A etc, but not much
details on the site (no data sheets), is there something about these
units that doesn't allow them to be used for general purpose DSP
(assuming you can live with the A/D specs)? Or do they cost $200/each
and that partially explains why hearing aids are $3000? :)

steve wrote:
> I'm referring to the Ultra Low Power DSP's customized for hearing aids > and headsets, they are very small, very fast processors and use very > little power (0.05mW/MIPS) and run on 1.2 volts, quite impressive
Not really that impressive. Remember they are talking about 0.05mW/MIP for the *core*. For a complete chip the picture would be rather different. The core is the least consuming part of many small MCUs and DSPs. You want flash? look at the leakage most people get with that? You want a speech bandwidth A/D and D/A on board? Look at the power they take. Regards, Steve