MFOS VC LFO
To successfully build Ray Wilson's VC LFO.
Noise is represented by waveforms. The following waveforms are outputs generated by the VC LFO. The sine wave is the simplest, a basic and isolated sound, involving no harmonic or inharmonic sounds ─ and its frequency determines the pitch of the sound in question. The sine wave is at the origin of all the other waveforms. The square wave differs from the sine wave in that, besides the fundamental frequency, it also contains odd harmonics. The sum of these harmonics and the fundamental give it its square shape. The pulse wave is derived directly from the square wave. It's a wave where the second part of the cycle is replaced by absolute silence. So it's not a symmetrical square wave. The triangle wave is comparable to the square wave in that it contains a fundamental sound plus odd harmonics. However, the power of each harmonic in the triangle wave is twice as low as their counterparts in the square wave. Thus, the power of the harmonics in the triangle wave is reduced twice as fast as in the square wave. The sawtooth is the most extreme asymmetrical triangle wave. It can adopt two shapes: A progressively increasing ramp followed by an abrupt drop, or a sharp rise followed by a progressive descent.
To obtain results, the VC LFO is connected to a -/+12 power supply. Each output is visualized through an oscilloscope. The frequency of the wave is modulated by turning the course and fine frequency potentiometers.