thanx for the fast - straight-forward answer
--- Chris Cannam <cannam(a)all-day-breakfast.com>
escribió:
The generic answer to "how do I add effects
to this
JACK app that
doesn't immediately appear to support them?" is to
use jack-rack,
which is a very nice standalone JACK effects rack,
hosting LADSPA
plugins. Run it up and then connect the output of
your other JACK
app (Specimen in this case) into jack-rack using the
qjackctl audio
connection manager.
(I can't remember offhand whether Specimen always
outputs to JACK or
whether it also has direct ALSA output. You will
obviously need to
have it outputting to JACK and have jackd running
[via qjackctl for
example] to do this.)
how is the
audio routed from specimen back into the midi host
mixer (it displays audio in a channel called
rec... )
but it has no slots for plug ins...
In this case the answer is that the audio is _not_
routed back into
the midi host. The only reason you see it on the
Rec meter in
Rosegarden is because Rosegarden's record input is
connected to the
soundcard capture channel, and that is receiving the
same audio as is
being output to the speakers from Specimen. Even if
you could apply
effects at that point in Rosegarden, it wouldn't
alter the sound you
actually hear while playing.
Note that this also implies that if you record the
results straight
back into Rosegarden as it stands, you'll get some
noise because
you'll be recording the mixed soundcard input, not
the pure output
from Specimen or jack-rack (I think). For a clean
recording, you'd
have to use the same JACK connection manager to
disconnect the
Rosegarden record input from the ALSA PCM in and
reconnect it to the
output of Specimen or jack-rack or whatever.
Chris
_________________________________________________________
Do You Yahoo!?
La mejor conexión a internet y 25MB extra a tu correo por $100 al mes.