leslie sim part that much SOUND SAMPLES

[Steben]

Hi guys,

Some time ago I posted some thoughts on how to analyse the leslie as an effect.
Part of the leslie cab is the atmospheric experience of course. This can never be fully simulated. At least not in mono.
Yet. As sounds get recorded on songs, part of this experience is lost. What rests is a sound effect.

I tested today some chords in LMMS. What I did was making two channels each with the same base sound. Two clones of the same chords in sine waves.
Then I added a low pass on the first and a high pass on the second. Then I added a generic low resonance phaser effect on both and played with the rates.
Man, that sounded awesome. When taking away one the elements, be it the low pass, one the channels, one of the phasers, .... the convincing effect was gone.

No tremolo effect was added.

[Steben]

slow speed:
+/- 0.8 Hz W and 1 Hz horns

http://sndup.net/kkqn


high speed:
+/- 6.5 Hz W and 7,5 Hz horns

http://sndup.net/z9qm

[ElectricDruid]

Very nice!

Definitely gets you in the right ballpark for not too much work.

[Steben]

Very nice!

Definitely gets you in the right ballpark for not too much work.

thx.

Seriously I think a phase 45 style circuit might work.
The "throb" of a leslie comes from the woofer part. And phasing means larger absolute delay with lower frequency.
The vibrato effect on itself is not deep on a leslie. A normal depth chorus is usually already too much.

[Kevin Mitchell]

Phasers are close, that's what the Univibe was original aimed to do. But a chorus using modulated delays will yield much better results.

You're pretty close on the speed! Close enough for me to know you don't need this, but here it is anyways 

<sub>Slow Speed
Horn: 50RPM (0.833Hz)
Drum: 40RPM (0.666Hz)

Fast Speed
Horn: 400RPM (6.666Hz)
Drum: 340RPM (5.666Hz)</sub>

[Steben]

Phasers are close, that's what the Univibe was original aimed to do. But a chorus using modulated delays will yield much better results.

You're pretty close on the speed! Close enough for me to know you don't need this, but here it is anyways 

<sub>Slow Speed
Horn: 50RPM (0.833Hz)
Drum: 40RPM (0.666Hz)

Fast Speed
Horn: 400RPM (6.666Hz)
Drum: 340RPM (5.666Hz)</sub>

I adapted the lot to your numbers:

slow
http://sndup.net/qvj3

fast
https://sndup.net/qgqm/

At least in the simulations, chorus featured too much tone shifting and less volume wobble. I guess the notch effect in the lower freqs brings in the volume changes.

[Steben]

[Ripthorn]

Funny this should pop up now. I'm also working on an effect like this, but with a slightly different angle. I hope to make some progress on it over the holiday break.

[Kevin Mitchell]

A few months back I had cloned the CLS-22 which is a beautiful Leslie sim from the 80s.
Crude demo video here - used a mono synth as the sound source. In stereo so headphones are recommended.

That one was pretty complicated with a some obsolete parts - four TDA1022 BBDs and two TDA1074A tone/vol chips.

[Kevin Mitchell]

Double post