Flanger
Flanging is created by duplicating the audio signal and delaying it by a minuscule amount, rather than applying all-pass filters like with chorusing and phasing modulations.

Parameters
Send Level
Reduces the gain of the audio input to the effect. Unlike adjusting Dry / Wet, modulating send level preserves any audio tails.
Depth
Controls the sweeping range of the effect.
Rate
Controls the speed of the modulation.
Feedback
Governs the level of modulated signal that is sent through the system again.
Stereo
Widens the left–right panning range of the effect.