new FM demodulator

Anders Lynge Esbensen anders at lyes.dk
Thu Jan 30 13:56:41 UTC 2014


Hi Nikos

Roughly speaking, the old atan demod, would load my cpu(3ghz core 2 duo) 
on approx 8.5%, with the new
modulator the load would be ~5%

There is a little penalty however, it seems that my demodulator is a 
little more noise sensitive, but it is not much.

/Anders

On 01/30/2014 11:09 AM, Nikos Balkanas wrote:
> Great! Performance is always welcome;-)
>
> Do you have any benchmarks?
>
> Nikos
>
>
> On Thu, Jan 30, 2014 at 11:19 AM, Anders Lynge Esbensen 
> <anders at lyes.dk <mailto:anders at lyes.dk>> wrote:
>
>     Hi and thanks for a great tool set.
>
>     I've implemented a faster FM demodulator for rlt_fm. Its an
>     instantaneous frequency demodulator, like the already implemented
>     atan method, but it uses some math tricks to get rid of the the
>     actual atan calculation. Feel free to use it if you wish
>
>     Best regards
>     Anders
>
>

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