Interference of sound waves from two speakers, same generator.

Interference of Sound Waves from 2 Sources. The speaker assembly is swung left or right (or, the mic is moved left or right), and the changing amplitude of the sound is heard (and may be displayed on the scope.) Switches on the base of the speaker unit allow either speaker to be turned on or off, or the phase to be reversed with respect to each other. Distance between speakers and mic is about 1 M. Note: If you want the oscilloscope display, please request it specifically...