What does flanging mean?
Flanging denotes two distinct processes that share a name but little else. In audio, it is an effect created by blending a sound with a very slightly delayed copy of itself; as the delay is modulated back and forth, comb filtering produces the dramatic sweeping 'whoosh' famously likened to a jet plane taking off. The technique emerged in the era of magnetic tape recording and became a signature color of late-1960s psychedelic and progressive rock, later embodied in the flanger pedal found on virtually every guitarist's board. In industry, flanging refers to a sheet-metal fabrication process in which the edge of a panel is bent at an angle to form a flange, adding rigidity or enabling parts to be joined. Both senses derive from 'flange', the projecting rim or edge itself. Whether in a recording studio or a fabrication shop, flanging describes the deliberate shaping of edges — sonic or metallic — into something new.
An audio effect produced by mixing a signal with a slightly delayed, modulated copy of itself, yielding a sweeping, comb-filtered sound.
"Flanging on the drum loop gave the track a hypnotic, underwater feel."
Commonly associated with flanger pedals and 1960s–70s studio practice.
The process of bending or forming the edge of sheet material into a flange, usually to add stiffness or allow joining.
"Flanging the duct panels made them far more rigid before assembly."
Flanging got its name because engineers created the effect by literally pressing a finger against the flange — the rim — of a tape reel to slow it down by hand.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of flanging
Both senses trace to the noun 'flange', whose own origin is somewhat obscure; it is generally thought to have come from an Old French source akin to 'flanche', a variant of 'flanc' meaning 'flank' or 'side', so the word ultimately concerns a projecting edge or side. The audio sense arose in the mid-twentieth century, when studio engineers discovered that pressing a hand against the flange — the rim — of a tape reel slowed playback slightly, and combining this with an undelayed signal produced the now-famous effect. The metalworking sense developed alongside industrial fabrication techniques in the nineteenth century.
Related word forms
How flanging is actually used
In music production, flanging is almost always discussed technically or in the context of effects pedals and studio history; the term is strongly associated with psychedelic rock of the late 1960s and 1970s. In engineering contexts, flanging belongs to sheet-metal fabrication vocabulary and is unremarkable register-wise. The two senses share a field only coincidentally through their parent word 'flange'.
Easily confused with flanging
Phasing sweeps its notches using filters on a single signal, while flanging uses a short time-delayed copy, producing a deeper, more pronounced jet-like sweep.