2 Nov
2003
2 Nov
'03
4:28 p.m.
On 02 Nov 2003 13:32:19 -0600
Jan Depner <eviltwin69(a)cableone.net> wrote:
On Sun, 2003-11-02 at 12:07, David wrote:
I wanted to play a guitar through jack-rack and I heard this noise. Did
it come from jack-rack, a ladspa plugin, jackd, alsa, the soundcard ?
This is why I tried to isolate the problem, ending with a very simple
setup : jackd connects the input channel to the output channel PCM Out 1
assigned to H/W Out 1 (with the "PatchBay/Router" in envy24control). I
still get the noise.
I don't have this problem when doing true hardware monitoring of the
input : be it by assigning H/W In 1 to H/W Out 1 (with the
"Pathbay/Router") or by assigning Digital Mixer L to H/W Out 1 (with
the"Patchbay/Router") and unmuting/raising the slider of channel H/W
In 1 with the "Monitor Mixer" pane in envy24control.
Bad noise comes when I set H/W Out 1/2 to PCM Out 1/2 and connect
using jackd the alsa capture port (that map to a H/W In) to the alsa
playback port 1/2 (that maps to PCM Out 1/2).
Is this a better description ?
Yes. I believe Joe is correct - it sounds like a feedback loop
to me. Why are you connecting these? If you want to monitor in
real time just set HW Out 1/2 to Digital Mix L/R. Jan
Thanks.
--
David