The phaser is used to create a classic sweeping sound suitable for pads and guitars, but can be used for more extreme effects too.

The phaser effect units work by creating a complex frequency response containing many regularly-spaced "notches" in an incoming signal and combining it with a copy of itself out of phase. The positions of the notches are modulated over time by the use of a low-frequency oscillator.

The phasing effect is a kind of hollow "whooshing" sound reminiscent of a flying jet airplane.

A stereo phaser uses two identical signals modulated for the left and right channels with one usually being a quarter-wave out of phase.

The phaser is best used as an insert effect.

Phaser Example

Clap without phaser effect

Clap with phaser effect

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