28 Mar
2009
28 Mar
'09
1:09 p.m.
On Saturday 28 March 2009 16:39, Ken Restivo wrote:
When a LADSPA plugin is being sent zeroes-- i.e. when
the volume of the
input data is down to nothing-- is it still sucking up CPU cycles?
I understand from the JACK API that anytime a client gets a callback with
data, it has to drop down and deal with the data and then return, even if
the data is zero. But that could be lightweight, if the data are zero, or
is that very compute-intensive for the plugin?
I'm trying to build an outboard effects chain in various LADSPA hosts (JACK
Rack, ecasound, AMS, others... haven't settled on one yet), and when I've
got that plugin's volume MIDI'ed down to zero, I'd like it to not be
dominating CPU cycles at that time.
-ken
Hi Ken.
Your not experiencing a denormals problem perhaps with the plugins? Googling
denormals bring up some interesting hits on the first page. May be worth a
look if that is the problem.
Nigel.