[LAU] Convoluted Leslie?

[Ken Restivo]

On Thu, Jan 24, 2008 at 02:14:13PM +0100, Fons Adriaensen wrote:
> On Thu, Jan 24, 2008 at 01:46:00PM +0100, hollunder at gmx.at wrote:
> 
> > On Mon, 21 Jan 2008 22:11:52 -0800
> > Ken Restivo <ken at restivo.org> wrote:
> > 
> > > Anyone have a Leslie and willing to make a convolution impulse of it
> > > (say, using Fons' program for generating impulses)?
> > > 
> > > I love the sound of AZR3, and the Leslie is quite good, the only
> > > thing it is missing is the sound of the WOOD, of the actual Leslie
> > > cabinet itself. I'm curious what it'd sound like through a clean
> > > convolution of just the cabinet, possibly not even using the Leslie
> > > tube amp, just a clean transistor amp into the Leslie speakers.
> > > 
> > > Of course the tonewheel shape 2 or 3 setting isn't QUITE a tonewheel,
> > > but it's very close. If I could get the Leslie wood cabinet resonance
> > > in there I think it'd kick even more ass than it already does.
> > > 
> > > -ken
> > > _______________________________________________
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> > > Linux-audio-user at lists.linuxaudio.org
> > > http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
> > 
> > Hi Ken,
> > I don't own a Leslie but I know where to find quite some of them. I
> > might do some sampling there and could probably do that as well.
> > Problem is that I don't know how to do that, I'd need a lot more
> > information.
> 
> I guess that the FR of the cabinet will not be constant but
> depend on the 'phase' of the Leslie effect, i.e. the position
> of the rotor. In other words, it's not only a delay modulation
> but also a 'filtering' modulation.
> 
> One way to get a 'near to perfect' Leslie sound and effect
> at the same time would be to measure the IR at say 30 positions
> of the rotor, then use 30 convolutions and both shift and xfade
> them in the correct sequence and frequency. Probably not easy
> but it can be done.
> 
> If the Leslie effect is already done in softwared, you'd need some
> 'average' IR of the cabinet to add 'the wood'.
> 
> Just drop me a line if you need help in using Aliki to capture
> the IR(s).

That's exactly what I want. Wood (huh-huh. he said... wood).

I'm very happy with the Leslie sim in AZR3. Only thing that sounds missing to me is the resonance of the wood cabinet.

-ken