On Thu, Oct 24, 2002 at 05:32:22 +0200, Tim Goetze wrote: > >I suspect this dip is some kind of reflection from the limit, but I can't > >tell without trying one. > > you mean you intend to change valve to have adjustable > slope where it compresses? sounds good, if that is what > you mean.
Nope, that would be hard ;) I was thinking of having a second, hard clipping alg. and bringing that in for high ampltudes. > i did some testing with a simple > > in -> valve -> invert -> valve -> convolver -> out > > setup and it's beginning to sound like fairly good > distortion when the input signal is strong enough. > aliasing is very, very faint, with both valves set > for maximum saturation (and "character" = 1.). could > use some more saturation/clipping though. Yes. Its not really meant to be distortion at that level, more of a saturation thing. I usually put something hard in the middle (near the inverter, a cliper or sinus wavewrapper, something like that. Probably wont make a good guitar sound though. > two things: 'in' should probably be HP-filtered, because > the low frequencies become too dominant. and the valve Yes. Aparently they do this in the hardware too. > clipping is too strong at low input levels. it seems to > adapt the clipping level to the input level. i think that It doesn't. there are no time domain effects, and it doesn't adapt to amplitude - just a static trasfer function. It could be an interrelation with the two valves, but I dont think so... > it should rather have a certain threshold beyond which > saturation becomes more noticeable. 'weak' input sines > are flattened almost completely, at very low amplitudes, > rendering a sound resembling that of a torn speaker. Try turning down some of the parameters. You wont get good, hard distortion out of the valves, more of a natural warmth. - Steve