[linux-audio-user] Hammond organ?

[John Check]

On Tuesday 22 March 2005 07:43 am, philicorda wrote:
> tim hall wrote:
>
> "One of the problems with the hammond is that you would need a separate
> sample
> for each key, to get the proper vibrato of each tone-wheel and a good
> leslie
> is hard to fake. I'm not saying it's utterly impossible, but it would
> take a
> sample bank as finely engineered as the original instrument. And no,
> I've
> never heard the hammond transfered to CD without losing some of its
> power,
> although the tone of a real instrument generally does shine through."
>
> More like a seperate sample for each tonewheel. The mixing can be done
> afterwards, otherwise you would need to sample every drawbar position as
> well.

I'd  tie a controller to the amplitude envelope for the tone generator sample. 
The drawbars just increase the relative signal levels of each pipe
so it's functionally equivalent. 

> I've got an l122 valve tonewheel hammond and two leslies, a leslie valve
> one and a transistor sharma.
> I have to say that pretty much any keyboard can do a pretty good hammond
> simulation if you put it through a real leslie. One of my faves is a
> dx7. You can get a decent click and drawbar effect using the oscs.
>
> You gotta give beatrix a go. It's the nicest hammond on Linux IMHO. The
> leslie sounds great, and it can go really heavy and distorted if you
> like that kind of thing.
> http://www.dsv.su.se/~fk/beatrix_home.html
>
> 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.

Can you elaborate on that? Is it an artifact of the differing wavelengths or 
the physical construction?