> to build a WAV impulse response file of a circuit. Then you could use that IR to "play"
> through the circuit using JACE or similar.
i have been dreaming of this for so long :) i thought about it the other way though, using a 'custom' wave shape as a function generator in spice itself. would be very slow this way though.
the good news about doing this though is that you don't have to (unless you want to) emulate everything about the circuit, just the signal path. this would simplify and speed up the calculations somewhat.
porl
On 29/05/07, Paul Winkler <pw_lists@xxxxxxxxxx> wrote:
On Sat, May 26, 2007 at 10:27:47AM -0400, robert lazarski wrote:
> Pretty simple, but I live in Brazil and getting these parts may be hard and
> I am currently tight for time. Here's a guy who actually built these and has
> some tips:
>
> http://www.slinkp.com/pw_toys/foxx
That's me :-)
> Still trying to do this in software though for now. Any ideas?
> Robert
I predict that perfectly emulating a Foxx fuzztone would be tricky if
you don't have one handy to experiment with... but if you're satisfied
by getting in the general ballpark, you're in luck: the octave effect
is very simply generated by rectifying the signal. In hardware, this
means using diodes to invert the negative half of each wave. In
software it's even easier: just use abs() :-)
You might try making a trivial rectifier plugin using abs(), then
experiment with combining that with other plugins: various distortions
such as Steve's fast overdrive before and/or after the rectifier;
various EQ plugins before or after the rectifier; and you'll probably
want Steve's DC offset remover or something similar after your
rectifier.
The Foxxtone sounds really weird with chords, by the way. Non-linear
distortion, sort of like a ring modulator. Most people used it only
for single-note lines.
Jimi Hendrix had a similar effect on the "Purple Haze" solos, though I
don't know whether it was a Foxx or something else.
--
Paul Winkler
http://www.slinkp.com
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