====== Sound Wave Interference ====== {{ :physicsdemos:waves_and_optics:wave_motion:sound_wave_interference.mp4?800 |}} Two separated, identical speakers on a turntable are connected to a sine generator. A listener will hear sound from the two speakers interfere destructively as the turntable is rotated. One may also poll the class at a single position of the turntable to identify locations where the destructive interference condition is met. ====Setup==== A tone of 200-600 Hz works well. When you go to about 1 kHz, your ears may hear different intensities. Trippy. L3, A0 PIRA DCS 3B55.10