Moog LABYRINTH - Page 19

EXPLORING LABYRINTH (Continued)
PLAYING WITH OSCILLATORS
Labyrinth contains two oscillators: the audio-range sine wave VCO and the low-range triangle-wave
MOD VCO. As we explored in the previous section, both can be sequenced via their SEQ1/SEQ2 AMT
knobs, which provide quantized sequences when turned all the way up at QTZ.
Press RUN/STOP to play the sequencer and bring up
MOD VCO LVL in the mixer to around 12 o’clock. Each
of the channels in the mixer of Labyrinth will overdrive
above 12 o’clock. Play with the levels of the sine wave
VCO and triangle-wave MOD VCO and observe how they
saturate above 12 o’clock, adding crispy harmonics
and overtones.
RING MOD LVL
NOISE LVL NOISE TONE
With the mixer you can also introduce the sound of the ring modulation of VCO
and MOD VCO via the RING MOD LVL knob. Ring modulation is an eect that
produces the sum and dierence tones between two oscillators, and can be
used to create metallic, inharmonic tones.
Also present in the mixer is a variable-tone NOISE
generator. Add some NOISE via the NOISE LVL knob and
adjust its spectral makeup via NOISE TONE, emphasizing
low frequencies counterclockwise and higher frequencies
clockwise.
Broader timbral depth can also be achieved with frequency modulation. Begin
to raise the MOD VCO FM AMT knob to hear the MOD VCO modulate the
frequency of the VCO. The broad frequency range of the MOD VCO can provide
anything from slow, subtle vibratos to wild and noisy audio-rate FM tones.
NOTE: The MOD VCO FM AMT control uses thru-zero frequency modulation, which will
keep the VCO in tune regardless of the FM AMT setting.
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