A geometrical waveform typically generated by an oscillator. It is a special case of pulse wave, where the mark/space ratio is 1:2. It has only the odd numbered (1, 3, 5, 7, etc.) harmonic partials. The amplitude of each harmonic is the reciprocal of its number in the series (i.e. the 3rd. harmonic is a 3rd. the amplitude of the 1st.). It has a buzzy but mellow timbre very similar to that of a clarinet. See also Pulse Wave, Ramp Wave, Sine Wave, Triangle Wave.