Square Wave

Square Wave

The square wave has only odd harmonics. Square_HarmonicThe interesting similarity to the sawtooth wave is that each harmonic decreases in the same manner except the third harmonic is ½ the amplitude of the fundamental, with the fifth harmonic at 1/3 the amplitude of the fundamental, and continuing along in that manner. This harmonic structure gives the square wave a little more bite to the sound, which can be heard here.

100hz Square Wave


500hz Square Wave


1000hz Square Wave


Other Soundwave Examples:

Sine WaveSquare WaveSawtooth WaveTriangle Wave

These main four waves can be seen in most synthesizers, DAWs, and testing equipment. There are some variations that include the sawtooth wave going in opposite directions and the lopsided square wave (being larger on the top and smaller on the bottom or vice versa). Depending on the device these waves can be added together to create complex waveforms, can be used to modulate a signal, or can create the pattern for a pulsating effect.

Click on the following to learn more about: Sound Waves and Harmonics