From obxwindsurf@yahoo.com Tue Nov 18 07:17:32 2003
Subject:Re: Leslie Simulators - Part II

The reasons why a Leslie simulator can only come close is due to the
fact that a Leslie is a 3-dimensional sound source which produces
amplitude-modulation, frequency-modulation, doppler frequency shift,
and time-varying 3d reflections (which all occur simultaneously in a
very complex relationship) based on the position of the Leslie in the
room, the size of the room and the direction that the independent
rotors point in at a given instant in time.

Stereo microphones with a given spread and distance will capture this
in a 2-dimensional aural field which is clearly evident by listening
to the Leslie in the same room, and then listening to it in a control
booth through stereo monitors. The sound is NOT the same for obvious
reasons.

If a sim has stereo outputs and the ability to control "spread"
and "distance" in conjunction with independent bass and treble rotor
models with their respective ramp up/down, slow-speed, and fast-speed
controls, that is as close as you can get to the real thing.

It's more a function of these characteristics (which are very
difficult to achieve convincingly) in conjunction with the horn
modeling that really need to be on to achieve a good sim.

Regards,
Kevin