MATRIXSYNTH: Livewire AFG Audio Frequency Generator eurorack module


Saturday, June 08, 2013

Livewire AFG Audio Frequency Generator eurorack module

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"The Audio Frequency Generator (AFG) is probably the most comprehensive VCO for the 3U modular system in Eurorack form factor. It is a massive and great VCO with partly totally new features like the complex "harmonic animation" section. It provides an enormous variety of waveforms and timbres and allows extensive modulations with knobs and CVs. The AFG even has its own sub-oscillator and also does linear FM. The Livewire Audio Frequency Generator is designed with expandability in mind and there will be modules which are intended to further expand upon the AFG’s sound shaping capabilities.

3U Eurorack module, 28HP wide, 56mm deep
current draw: 120 mA, weight: 490g

features:
8 simultaneous waveform outputs
a total of 27 distinct waveforms are possible
sub-octave with switchable square or sawtooth waveforms
unique animated pulse & alien saw waveforms
programmable ‘natural’ or ‘laboratory’ sine wave modes
alternate waveform set is activated on all outputs simultaneously with matter/anti-matter switch
select between 2 different anti-matter waveform sets via pcb jumper
9 cv inputs, each with dedicated attenuators, with the exception of the two 1v/oct inputs
2 fm inputs, both switchable between linear & exponential
dedicated sync in/out

harmonic animation
the harmonic animation section of the afg controls the harmonic content of the animated pulses & alien saws waveforms.

the animated pulses waveform is synthesized by four control parameters, each having a manual adjustment knob and cv input with dedicated attenuator:
positive pulse width modulation (+pwm) – controls the width of the two pulses on the top (or positive) side of the waveform
negative pulse width modulation (-pwm) – controls the width of the two pulses on the bottom (or negative) side of the waveform
positive phase position modulation (+ppm) – controls the relative phase position of the two positive pulses (in relation to each other)
negative phase position modulation (-ppm) – controls the relative phase position of the two negative pulses (in relation to each other)

the alien saws output is a bizarre, multi-toothed saw waveform that is derived from the animated pulses waveform. it’s harmonic content is also synthesized by the four control parameters of the harmonic animation section, but in different and more enigmatic ways"

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