Tremulant

The Tremulant device is a harmonic tremolo audio effect.

With this effect, an LFO is used to modulate the audio levels of 2 filters - a highpass and lowpass, with a notch at the center frequency. The output has a distinctive sound, obviously not the same as a volume modulating tremolo.

The device also has some additional noise in the modulation, and allows one channel to be flipped, creating a stereo effect.

Designed to be used with single monophonic instruments, but experiment!

I will upload a video demo soon...