Moog Music MF-107 FreqBox - Manual (Page 22)

22
Using the FreqBox with a CP-251 Control Processor
Sample and Hold Sync
This setup patches the Sample and Hold output of the CP-251 to the
Frequency input. The setup is pretty much otherwise the Basic Sync
Setup. It illustrates the use of CVs to modulate the FreqBox parameters.
This one is pretty nice for pseudo-arpeggiated sparkly sounds. You can
easily substitute other time-varying CVs such as the LFO triangle wave
for further exploration of this idea.
PWM
Figure 17 - PWM
Figure 16 - Sample and Hold Sync
This setup uses the LFO triangle wave from the CP-251 to modulate
the waveform of the VCO, which is set halfway between square and
the pulse setting. The trick is to adjust the attenuator for the right LFO
amount such that the sound seems "fatter and skinnier" in time with the
LFO. This is varying the pulse width of the VCO waveform and is called