Flanger

This effect can add interest to a sound by inverting the phase of the audio signal at its center frequency. The effect can sound similar to the Chorus effect, and often adds a wavy rushing sound to the audio.

Mix Specifies the proportions of the original audio and the flanger effect. Dry is the original audio, and Effect is the flanger.

Depth Changes the delay time for the effect.

Rate Specifies the flanger cycle in Hz.

Applying Effects > Audio effects included with Premiere > Flanger