Pittsburgh Modular Microvolt 3900, Руководство пользователя

Страница: 64 / 70

64
19. Microvolt Patch Example 6
Autonomous Control (Managing A Chaotic System)
This patch explores the process of building a self - sustaining chaotic system using multiple levels of pseudo -
random modulation to create a semi - autonomous synthesis creature. This is a complex patch that showcases
several important concepts. Understanding this patch will help with further experimentation into the world of
autonomous synthesis. The important user interface controls are highlighted in blue but all of the controls of the
Microvolt 3900 can impact the sound and functionality of the patch. Once the initial patch is set up, experiment
with one setting at a time to understand its effect on the signal path.
The chaotic nature of this patch starts with the clock source. The function generator with cycle (39) enabled is
used as the clock source for the random complexity (33). The output of the function generator (134) is manually
patched into the clock input (100). (See the midi / arpeggiator section of the manual to learn how to set the clock
source to external gate) In the context of a random system, the function generator makes an interesting clock
source. Manually patching the output of the random CV (126) through the signal splitter (136) to (138) into the
modulation input of the function generator (132) and adjusting the rise modulation (41) and fall modulation (42)
creates an interesting random clock tempo.
The pitch of the oscillator is randomized using the random CV (126) through the signal splitter (136) to (137) into
the pitch input.
The random gate output (128) is sent to the envelope generator input (118) to trigger the envelope. The output of
the envelope generator (119) is patched into the frequency modulation input of the filter (120) to modulate the
filter cutoff frequency. The sharp attack of the envelope also triggers the dynamic VCA pluck circuit and enables
the dynamic response trimmer pot to set the duration of the sound.