23 Oct
2002
23 Oct
'02
3:39 p.m.
On Wed, Oct 23, 2002 at 02:37:17PM +0200, Tim Goetze wrote:
still i'm not convinced that a sine should only be
compressed
if < 0 by valve_1209.so.
I'm not either. Tubes don't do that.
Tube distortion is famous for emphasizing even harmonics, but
it certainly isn't *all* even harmonics.
A bit of googling turns up some oscilloscope shots of
tube clipping such as these:
http://www.ax84.com/pdr/18watterbuzz.html#ResistiveLoad
Notice that while the clipping is certainly asymmetrical,
it's certainly NOT one-sided.
This is also worth considering, by a guy who's put a lot
of time into building analog (solid-state) tube amp
simulators:
http://home3.netcarrier.com/~lxh2/distampt.html
--PW
Paul Winkler
http://www.slinkp.com
"Welcome to Muppet Labs, where the future is made - today!"