[linux-audio-user] Struggling with jack_convolve

[Fons Adriaensen]

On Fri, Nov 03, 2006 at 09:23:10AM +1100, Stuart Allie wrote:

> I've just started playing with jack_convolve and I'm having a few
> problems. If I run the program with the default gain factor (1.0) and a
> room-type impulse, the output is horribly clipped - it clips on even a
> small input signal. In order to get a clean output, I have to reduce the
> gain to something like 0.01. Is that normal/expected behaviour? It seems
> odd that the default gain would be 1.0 if a useful value is around
> 0.01...

It depends on the energy in the IR. If it is a single strong pulse
followed by much lower samples, then a gain of 1 should work. If the
IR contains a lot of high amplitude samples, you will have to reduce
the gain.

You may want to have a look at JACE :
 
   http://users.skynet.be/solaris/linuxaudio


-- 
FA

Lascia la spina, cogli la rosa.