[Clam-devel] Testing the last low-latency ladspa

[Pau Arumí]

a very quick mail - i'm leaving to a meeting.

El dl 19 de 11 del 2007 a les 18:38 +0800, en/na globot va escriure:
> hi,
> 
> today i was trying to work with low latency and ladspa,
> i couldn't reach my goal.
> 
> something strange happen when using a low latency jackd (48000Hz, 64 
> frames, 2 buffers), the ladspa plugin i used (Glame HighPass filter) 
> seems to process only 64 frames out of 512 frames (the remaining frame 
> equal 0) plus the sample rate of the plugin is set to 44100  instead of 
> 48000.
 
this is a known issue. and should be easy to fix. i suggest you to try
modifyingt LadspaWrapper class.


> 
> I don't know exactly what is the problem. I first define the jack 
> backend, then it as network player, then load the XML.
> 
> to test it I just connect a filereader to Sink_0
> and use a "Glame HighPassFilter" between the file reader and Sink_1


filereader must be the problem. try with a jack-input (external file
reader app)


pau


> I Took screen shot of the output, on the bottom right a number indicate 
> the number of frames of the selection.
> 
> Something else seem strange to me, both output have absolutly no latency 
> difference, with or without ladspa (and the ladspa process is executed). 
> I tested it with a 512 framed jackd and it was perfect (no glitch).
> 
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