The envelopes are used to shape the sound over time. Envelope 1 is hard-wired' to ampli-
tude or volume. It is used to decide how quickly the sound starts when you hit a note and
how it sustains or dies away. Envelope 2 can be used to control Pulse Width, Filter frequen-
cy or Pitch changes depending on the settings of the “PWM Source” switch in the “Osc 1 -
2” section and the “Filter Mod” switch in the “Filter” section. Of course, if neither of these is switched to ENV 2, you will hear
no change when you alter the settings of Envelope 2. Switch one or the other to ENV 2 to hear the changes you are making.
Attack - Rotary
This knob sets how quickly the envelope rises to its maximum level when a note is struck. Fully anticlockwise, this is 500
microseconds ( instantaneous to our ears ) increasing exponentially to 20 seconds fully clockwise. To shorten attack times
turn this knob anticlockwise and to lengthen attack times turn this knob clockwise.
Decay - Rotary
This knob sets how quickly the envelope drops off to the sustain level once the maximum level has been
reached. Fully anticlockwise this time is 1 millisecond ( still instantaneous to our ears ) increasing exponentially to 20 sec-
onds fully clockwise.To shorten decay times turn this knob anticlockwise and to lengthen decay times turn this knob clock-
wise.
Envelopes 1 and 2
Section
78
ATTACK
0
10
DECAY
0
10
