Before starting this experiment call up the function "Init sound" in the write menu and then return
to the oscillator edit menu.
On menu page 25 you can adjust the modulation frequency. As an example, set a low value of 1.
Edit Part1 OSC
<25> FM-Rate: 5
On menu page 26 adjust a high value of 127 for the modulation depth.
Edit Part1 OSC
<26> FM-Dept: 127
Now when you play a note, you can hear the sound clearly. Select menu page 24 of the oscillator
menu. There you can select the waveform for the FM-LFO. This menu is equal to <LFO-WAVE>
with selected [VCO-FM].
Edit Part1 OSC <24>
FM-Wave: SIN
You should be able to hear the difference between the waveforms. The following waveforms are
provided to the POLYMORPH from the LFOs:
KEY
SIN = sine
SWD = sawtooth down
SWU = sawtooth up
SQR = square
TRL = triangle
RND = random
Now that you have been introduced to the different LFO waveforms with the help of the pitch
modulation, you can try something else - how the PWM-LFO influences the sound.
PULSE WIDTH MODULATION
First initialize the sound in the write menu (Init-sound). Then set the <WAVE-1> on pulse 31.
Push [PWM] so that the PWM-LFO is on the edit surface. Turn <LFO-DEPTH> to it's maximum of
127 and <LFO-RATE> to a very low value (1). Now you should hear pulse width modulation. The
sine wave is especially suitable for this case as LFO waveform, because you get the impression
there are two floating oscillators, when there is only one.
On menu page 23 or 27 you can try delaying the effect of both LFO's. After pushing a key on the
keyboard an adjustable time will pass before the modulation begins.
Edit Part1 OSC
<23> PWM-Del: 0
So far the parameters of the oscillator edit menu in overview. Now follows a description of the
filters.
27
The Synthesizers of the POLYMORPH
SQR
SIN
TRL
SWD
RND
SWU
LFO-Waves of the POLYMORPH
Tip
