linuxaudio.org

On 15 July 2010 18:23, Harry Van Haaren  wrote:

quoted text
>

>> 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;

>

> ;-)

Don't forget about negative numbers ;-)
n = ((n > 0.0 && n < 0.000000001) || (n < 0.0 && n > -0.000000001)) ? 0.0 : n;

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