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A flanger is an audio effect that combines an original signal with a slightly delayed copy whose delay time continuously changes. This creates the characteristic sweeping, swirling sound associated with flanging.
What is a flanger?
A flanger works by mixing two nearly identical audio signals while continuously varying the delay between them by just a few milliseconds. This produces a series of moving peaks and dips in the frequency spectrum, known as comb filtering.
Flangers are commonly used on guitars, keyboards, synthesizers and vocals to add movement and texture to a sound.
How is a flanger used with piano?
Piano players often use a flanger with electric pianos, synthesizers and digital keyboards to create a rich, animated sound. The effect is especially useful for sustained chords, pads and atmospheric textures.
Understanding how a flanger works helps keyboard players choose the right effects for different musical styles and productions.