leslie
From TidalCycles userbase
Type: leslie :: Pattern Double -> ControlPattern
leslie controls dry/wet. "lrate" is the modulation rate (typical vintage rates would be 6.7 for "fast", 0.7 for "slow"). "lsize" is the physical size of the cabinet in meters, this mostly affects the Doppler amount (pitch warble).
d1 $ s "supermandolin*8" # leslie 1 # lsize 2.8 # lrate 6.7