Uses amplification to create a shuddering effect, where the volume quickly oscillates. Demo: https://en.wikipedia.org/wiki/File:Fuse_Electronics_Tremolo_MK-III_Quick_Demo.ogv
Optional
The frequency 0.0 < x
The tremolo depth 0.0 < x ≤ 1.0
Uses amplification to create a shuddering effect, where the volume quickly oscillates. Demo: https://en.wikipedia.org/wiki/File:Fuse_Electronics_Tremolo_MK-III_Quick_Demo.ogv