Re: RMS

http://www.ecs.soton.ac.uk/~swh/rms/

That was a bit cryptic, but I had very spotty 3G coverage. Sorry it took
so long to get the code out, I had to find time when there wasn't anything
crashingly urgent to do :-/

I've only tested it on a mac, but there shouldn't be any nasty supprises
there, it's pretty simple code.

It's an implementation of an RMS function with a decaying time window,
which seems appropriate for a meter and is much more efficient than doing
it the hard way.

You have to instantite the state object with the sample rate and the
window size (higher numbers = slower moving meter, I'm guessing 0.1
seconds is about right), if the window size is too large (eg. 1.0 seconds)
then there are some rounding errors in the output, but that shouldn't be
an issue for JAMin.

I may also use the code in the compressors, as I think it would do a
better job there than the rectangular window code I'm using now.

- Steve

On Thu, Nov 23, 2006 at 12:38:11 +0000, Steve Harris wrote:
> http://www.ecs.soton.ac.uk/~swh/rms/
> 
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