Pronounced 'flan-jing', the act of mixing two audio signals together, with one being delayed by a small and slowly changing period producing an output signal with peaks and troughs in a harmonic series. Flangers are similar to phasers (phase-shifting, beyond the scope of this definition) however, if you listen intently enough, you can hear the difference.
The
flange effect can best be described (to those who
never studied wave mechanics) as a jet sound; sounds like a jet aircraft passing by the listener. Phasing on the other hand sounds much more alien and "other-worldly".
While used in all sorts of different
music, flangers are most heavily used in psychedelic and dreamy
music where strong harmonics and a "wall-of-sound" depth are often sought - used with good reason too, flanging sounds insanely
beautiful when you're as high as a kite. ;)
I was listening to Slowdive's Machine
Gun shortly after returning from another galaxy. Coming down, the flanging was simply too
beautiful for my
human ears, so I cried and reassessed existence.