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Envelopes, Midi accessible control, External control – Moog Music MINITAUR User Manual

Page 8: Panel controls for the envelopes

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way to self-oscillation.

EG AMOUNT (CC# 22):
Determines how much the Filter Envelope Generator (EG) adds to or
subtracts from the Filter Cutoff control setting. When the EG AMOUNT knob
is set to positive (+), turn the FILTER CUTOFF knob left to hear the effect.
When the EG AMOUNT knob is set to negative (-), turn the FILTER CUTOFF
knob right to hear the effect. Note that if the Cutoff frequency is set very high,
a positive EG Amount may have little or no noticeable effect, regardless of the
setting. Similarly, if the Cutoff frequency is set low, a negative EG Amount may
have little or no noticeable effect.

MIDI ACCESSIBLE CONTROL

FILTER KB TRACKING (CC# 20):
Determines how the Filter Cutoff changes in response to MIDI Note On
values. Filter tracking is adjustable from 0 to 200%.
Default = 32 (about 50%).

FILTER VELOCITY SENSITIVITY (CC# 89):
Sets the amount OF MIDI Note velocity to the Filter.
Default = 64.

EXTERNAL CONTROL

The FILTER CV jack on the back panel is an input for external control of the
Filter Cutoff parameter. A voltage applied to this jack is added to the setting
of the Filter Cutoff control. A one-volt change in the Control Voltage will
change the cutoff frequency of the filter by about one octave. The jack
accepts 0 to +5 volts, or an expression pedal like the Moog EP-2.

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ENVELOPE GENERATORS (EGs) add motion to
a sound after a note is played. The Minitaur has
two separate Minimoog style Envelope Genera-
tors that affect the brightness and loudness of
the Minitaur's sound by modulating the Filter
Cutoff (VCF) and Volume (VCA).

The EGs are started by a Gate or MIDI
Note message. Once started, their
shape in time is set by the ATTACK,
DECAY/RELEASE, and SUSTAIN controls,
as well as the Release switch and length
of the Note played.

ENVELOPES

Note On

Note Off

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Time

D

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Su

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R

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PANEL CONTROLS FOR THE ENVELOPES

FILTER ATTACK (CC# 23):
Sets the time it takes for the Attack portion of the Filter EG to rise from
zero to maximum. The Attack time ranges from 1 msec to 30 seconds.

FILTER DECAY/RELEASE (CC# 24):
Sets the time for the Decay and Release portion of the Filter EG. When a
note is held, and the Attack time end is reached, the Decay portion of the EG
starts. During the Decay portion, the EG moves to the Sustain level. When a
note is released, the EG moves back to zero at the rate set by this control.
This time ranges from 1 msec to 30 seconds. The Release segment of the
Envelope is determined by the state of the RELEASE switch (ON/OFF).

FILTER SUSTAIN (CC# 25):
Sets the Filter EG level after the Decay and before the Release portion.
A note must be held longer than both the Attack and Decay time to reach
the Sustain level. The level is adjustable from 0 to 100%.

AMPLIFIER ATTACK (CC# 28):
Sets the time it takes for the Attack portion of the Amplifier EG to rise from
zero to maximum. The Attack time ranges from 1 msec to 30 seconds.

AMPLIFIER DECAY/RELEASE (CC# 29):
Sets the time for the Decay and Release portion of the Amplifier EG. When
a note is held, and Attack time end is reached, the Decay portion of the EG
starts. During the decay portion, the EG moves to the Sustain level. When a

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