A modulation effect that splits a signal, shifts the phase of one copy across notch filters, and recombines it, creating a swirling, resonant sweep.
A phaser splits an audio signal into two paths, applies phase shifts to one path through a series of all-pass filters, then recombines both paths. The interference between the two copies produces a series of moving notches in the frequency spectrum, heard as a sweeping, whooshing texture.
Why it matters
Phasers add hypnotic motion to a mix without dramatically changing the frequency balance. They are most effective on sustained pads, basslines, or during breakdowns to create tension before a drop.
In practice
Apply a phaser lightly at the tail of a breakdown, sweeping the rate control upward as the build-up rises. Pull it off before the drop lands so the unprocessed signal hits clean.
