Analogue Solutions Nyborg - Manual (Page 17)

VCA
The Voltage Controlled Amplifier (VCA) is
the circuit that is used to change the
output volume. Normally an envelope
signal would be used to do this, so the
sound starts loud then gradually fades
away. The filter audio output is hard-
wired to the VCA signal input.
MODE
Rotary Switch
The VCA can be controlled in 4 modes
EG2
When EG2 is selected, the envelope signal of EG2 is used to modulate the VCA level.
Use it if you require the VCA level to change over time. (Normal use).
LFO (repeat)
When this is selected, The LFO will constantly re-trigger (repeat) the envelope.
GATE
When GATE is selected, the MIDI note on/off information is used to modulate the VCA.
With this, the VCA level is either off or full on. The audio envelope would be like an
organ's, with no attack or decay time.
BYPASS
When BYPASS is selected, the VCA is left permanently on at full level. Use this setting
if you wish to use the Filter as an effects processor, to process external audio fed into
Nyborg via the EXT1 socket.
VOLUME
This sets the output level of Nyborg, i.e. the output from the VCA that is sent to the
rear panel SIGNAL output socket.