The Livewire AFG is now available.
This sexy beast, which we previewed at the 2008 Winter NAMM Show Synthgasm, is probably the coolest modular synth oscillator ever designed. Livewire’s Mike Brown demo’d it for me at NAMM, and I left thinking that he was one of the nicest guys in the world of modular synths and [...]

MusicMik demonstrates what VCO sync looks like with an oscilloscope:
I made this video during development of another VCO, my synchronization master is just a provisoric square oscillator, which produces a very unclean signal. Besides this i don’t have the audio equipment in the lab to create a better audio on this But the main [...]

Dave Cornutt offers a nice overview of how a VCO works:
Synth circuit designers, starting with Moog and Buchla in the early 1960s, long ago turned to “artificial” oscillator circuits that do not rely on natural resonance. Rather, they rely on an analog implementation of a mathematical function that can be made to increase and decrease [...]

2007 Winter NAMM Show: Moog Music added another effect to their already unique Moogerfooger line, the FreqBox.
The FreqBox does not actually modify the audio input signal to produce an altered version of the sound source. Instead, the effected sound is an analog Voltage Controlled Oscillator (VCO) modulated by the sound source input—an Audio Modulated [...]