AMPLIFIER/ENVELOPE GENERATOR SECTION
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The Voltage Controlled Amplifier in the MS-10 is pre-patched to the Envelope
Generator. In other words, in normal operation, the amount of amplification
of the sound exactly follows the output produced by the envelope generator.
As such, there are no controls in the panel section for the VCA. There
is, however, an external input for the VCA (labeled INITIAL GAIN) on the
patch panel. Plugging something into this DOES NOT disable the pre-patched
connection between the VCA and the EG, instead it simply "adds" to the
amount of gain being applied by the EG. As such, using the REV OUT from
the EG as a source for this input is not terribly useful (actually not
useful at all--the REV OUT outputs a negative voltage, and the INITIAL
GAIN accepts only positive voltage inputs). Other options, however, include:
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Using the MG ramp/triangle output or square wave output for a throbbing
effect like this
(MG ascending ramp output patched to "Initial Gain" input, keys pressed
to trigger EG over the top).
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Using the wheel output (see patch panel section) to manually boost amplification.
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The Envelope Generator on the MS-10 is fairly straight forward:
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"Attack" controls the time it takes the envelope to reach the peak from
when the key is pressed;
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"Sustain" controls the level the envelope drops to after it reaches the
peak, while the key is held down;
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"Decay" controls how long it takes to reach this sustain level after reaching
the peak;
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"Release" controls how long it takes for the envelope to drop to zero after
the key is released.
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The only non "standard" feature is the "Hold" option. This control essentially
adds a hold time from when the key is released, until the envelope proceeds
to the "Release" stage (as if the machine is holding the key for you for
a time after you've let go and gone onto other things).
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On the patch panel, a REV OUT option is added. This outputs a voltage of
from 0 to NEGATIVE 5 volts and is the exact "mirror image" of the 0 to
POSITIVE 5 volts EG output (which is not accessible via the patch panel,
unfortunately). The can be used as a modulation source for:
On
to the Modulation Generator section.
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