Using a copy of [SPICE] a free circuit simulation application, I have created several sine wave sources and summed them together. Seen here, the waves combine into a square wave with it looking ...

An audio waveform theoretically comprised of an infinite set of harmonically related sine waves, as shown under Law of Superposition. It is often used in sound synthesis. See also: Fourier Theorem, ...

(Surface Acoustic Wave filter) A semiconductor device that is used to filter out desired frequencies. Widely used in mobile phones to filter both RF and IF frequencies, a SAW filter uses the ...