[LAD] Routing signals in mixer (Ardour, Qtractor)

Harry Van Haaren harryhaaren at gmail.com
Thu Jul 15 17:23:53 UTC 2010


> LADSPA vocoder in JACK Rack has the same problem. Being already pretty
> experienced in this regard (hehehe) I can say that this is because of an
> effect which I forgot how is called when the plugin stops receiving the
> signal but continues to try to process data and starts going into
> calculations of really small numbers and it triggers a software part of your
> CPU and it uses a lot of resources, these calculations. The developer should
> find a way to fix this somehow.
>

Your thinking of "Denormal" numbers.
http://en.wikipedia.org/wiki/Denormal_number

A nice "quick" fix for these is:
if ( number < 0.000000001)
      number = 0.0;

;-)

-Harry
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