Flanger

Flanger: A flanger creates a "whooshing" "jet plane" or "spaceship" sound, simulating a studio effect that was first produced by recording a track on two synchronized tapes and periodically slowing one tape by pressing the edge of its reel (the "flange"). When the two tapes' audio signals are later mixed, a comb filter effect can be heard. Flanger units add a variably delayed version of the audio signal to the original or signal, creating a comb filter or Doppler effect.[76][77] Some famous uses of flanger effects include "Walking on the Moon" by The Police, the intro to "Ain't Talkin' 'Bout Love" by Van Halen, and "Barracuda" by Heart.[78][79]