2011/2/27 Giuseppe Zompatori <siliconjoe(a)gmail.com>om>:
2011/2/27 Stefano D'Angelo
<zanga.mail(a)gmail.com>om>:
Ciao Giuseppe,
Ciao Stefano,
In the FAQ they say it's actually some sort of preamp... but well, I
can't provide hardware anyway.
I was merely pointing it out as I don't think there is currently any
other way to do it.
Connecting the guitar directly to the phone with a simple plug adapter
would probably sound meh.
Unless Google wants to add support for external USB sound cards to Android? ;)
Oh well. :-)
I don't
even know if I would charge for such plug-ins and/or release
them as closed source. Ideally, I would release them under GPL and
accept donations, but have no idea really. Actually there are a couple
of plug-ins I could really charge for since they are really beyond
state of the art and suitable for scientific publications (indeed,
that's why I'm developing them). They are physics-based simulators: a
fully parametric tube amp + eq + output transformer + loudspeaker +
air impedance, and a couple of diode clippers (one is
tubescreamer-like) - still some pieces are missing at the moment (new
triode model in the making, oversampling not yet in place, opamp model
not yet serious).
Sounds cool, I recently bought one of those beasts (
http://www.fractalaudio.com/products-fa-axefx.html ), and I think it's
amazing, hands down the best amp modeling I've ever heard (and amazing
effects too!) demos are here
http://www.fractalaudio.com/experience.html
It also does model the power stage section (power tubes->output
transformer<->cabinet interaction) and exposes many parameters to the
user, like tubes bias, negative feedback amount (if any), sag, B+
filtering/capacitance, even speaker distortion etc.
I'd be happy to compare your plug-ins to the Axe-FX ;)
Well... they seem to have a lot of stuff there. :-)
However, I wonder how they do it... I think they are probably using
some black box modeling, since multiple nonlinearities+feedback in a
single system is very hard to model.
The kind of stuff I'm trying to do is accurately model a class A amp
with a single triode using white box techniques... to give you an idea
of what it sounds like see this:
http://www.youtube.com/watch?v=cdNtmaIdLdo - it is part of my MSc
thesis presentation (100.000 lire guitar, dated and slow laptop, cheap
speaker and cheap camera... only the sound card is good).
I guess you speak Italian (at least your name suggests that), so enjoy
my weird southern accent. :-P
I would personally prefer desktop LV2 versions of your
plug-ins, they
could always be ported later to Android if it's going to be worth the
effort.
Sure, that would be the path to follow.
And I would prefer GPL'ed plug-ins and be willing
to donate, I don't
think there are many options right now on Linux, I dislike rakarrack
and guitar_ix, and find CAPS* so so.
Well, they say guitarix has improved, yet the last time I was all but
satisfied with it. You may want to take a look at invada plugins, if
you haven't already.
However,
correct me if I am wrong, I don't think most Android
platforms would be suitable for live processing (latency), but only
for recording (what about quality?).
Can't help you there, sorry. I have a cheap entry level HTC Tattoo and
it's slow as molasses. Haven't even attempted to install any audio
related apps. It might be feasible on higher end droid phones though
provided the audio API allows it, I just don't know. I think there has
been a recent discussion about realtime audio apps on Android on LAU
if I am not mistaken, you might want to search for it.
Ok, thanks.
Stammi bene,
Stefano