Page 5 of 7
www.AvonSynth.com
The
AVS-MIDI-1
MIDI to CV
Converter
User Guide
Simple Monophonic Voice Example
A standard single-voice example is illustrated below. This example has the AVS-MIDI-1
being controlled by a MIDI device such as a keyboard or sequencer, and playing
a tuned sawtooth wave in a monophonic manner. Once the patch is set up, the
VCO should be set to at least 20Hz (the lowest audible output from the sine wave out)
and the VCO output should be connected to the Tune Input as shown by the purple line.
Once the tuning routine is complete, this patch cable can be removed.
Audio
Output
MIDI
Input
Explanation
In this example, the gate output from the AVS-MIDI-1 triggers the ADSR envelope to
open up when each note is pressed. The envelope then controls the VCA, letting sound
through when notes are played. The V/OCT output controls the pitch of the VCO, which
should be providing 12-TET tuning referenced to A=440Hz if the tuning routine has been
carried out. The VCO output (sawtooth in this case) is sent to the VCA, and the output of
the VCA is sent to your ampli
fi
er and speakers (perhaps via a mixer or other equipment).
If you would like softer presses on the keyboard to generate softer notes, you can connect
the VEL output from the AVS-MIDI-1 to also control the VCA, though this is optional. If this
patch is replicated with 4 VCOs, 4 ADSRs, and 4 VCAs, rich 4-note polyphony can be
achieved. The Mod Wheel and Aftertouch outputs can also be used to control various
aspects of the sound such as vibrato amount or
fi
lter cuto
ff
.