vLinn LM-1, User Manual

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Quantized noise filtering:
Unlike the very first few produced LM-1 that were made without noise filters, later Revisions
featured some CEM3320 Voltage Controlled Filter chips for the voices that needs a more bassy
output.
The BASS, TOMS & CONGAS voices were filtered to minimize the remaining 8-bit quantized noise.
The 3320 can be configured in many ways to produce different type of filtering, in the LM-1 case, it
was basically configured as a 4 Poles Low Pass Filter with no resonance.
The CV which controls the frequency of the VCF was shaped by the circuitry in a way that lets the
transients pass through relatively unfiltered.
The VLINN lets you fine tune the CV pulse or completely bypass the filter, this is useful when a voice
is tuned very low or if you want to replace a "Bass" slot with another EPROM that doesn't require
filtering. Try to experiment with or without depending of your needs.