Re: [linux-audio-user] Hammond organ?

On Tuesday 22 March 2005 06:11 pm, John Check wrote:
> On Wednesday 23 March 2005 04:16 pm, philicorda wrote:
> > I wrote:
> > > It's also really worth playing with the LADSPA swh impulse convolver
> > > plugin. Guitar amps sound really good on hammond! Also the TAP preamps
> > > are nice. A bit of fuzz and grit+limited freqency range and odd
> > > resonances really brings it to life.
> > > The one thing no midi hammond can ever do is the way different tones
> > > come in at different times as you press down the key. This means you
> >
> > can
> >
> > > kinda flick the keys and just get the top drawbar to plip a little and
> > > the percussion to ping.
> >
> > John Check wrote:
> > "Can you elaborate on that? Is it an artifact of the differing
> > wavelengths or
> > the physical construction?"
> >
> > It's the way all the key contacts don't touch the bus bars at the same
> > time, so as you press down the key, the high drawbars and percussion
> > sound first, and then as you press down a tiny bit more the other
> > drawbars sound. I think my hammond's keyboard is probably more knackered
> > than most so I notice it/ use it more.
>
> Gotcha. Thanks

Now that I chewed on it.....

Okay, one way to approximate this would be to have the longer pipes have an
attack envelope that's modulated by velocity. Slower press, wider spray of
attacks across the pipes. Velocity ain't just for volume anymore. If there's
a gap where you can hold a note and not get all the tonewheels, aftertouch
might be our friend instead.
So a set of samples for each draw bar at appropriate intervals with levels
bound to controllers for the pipe mixing and attack envelopes on the longer
pipes bound to velocity going through a reverb/chorus/leslie stack of plugins
(or better yet outboard gear) gives you about everything but the beatbox.
It'd take 128 mono voices to pull off 8 drawbars @ 16 note poly. It's
debatable whether sampling the rotors is worth the bits vs simulating them,
if we ignore the freq response of the speaker cabinet.
Received on Wed Mar 23 12:15:04 2005