Cutoff Env. Amount
-64…+63
Determines the amount of influence the filter envelope has on the cutoff frequency. For
positive settings, the filter cutoff frequency is increased by the modulation of the envelope,
for negative settings, the cutoff frequency is decreased. Use this parameter to change the
timbre of the sound over time. Sounds with a hard attack usually have a positive envelope
amount that makes the start phase bright and then closes the filter to get a darker sustain
phase. On the other side string sounds usually use a negative envelope amount that gives a
slow and dark attack before the cutoff rises in the sustain phase.
Env. Velocity Amount
-64…+63
Determines the amount of influence the filter envelope has on the cutoff frequency, based
on key velocity. This parameter works similarly to the
Cutoff Env. Amount
parameter with
the difference that its strengh is velocity based. Use this feature to give a more expressive
character to the sound. When you hit the keys smoothly, only few modulation is applied.
When you hit them harder, the modulation amount also gets stronger. The following
diagram illustrates the functionality of this parameter:
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The overall modulation applied to the filter’s cutoff frequency is calculated as the sum
of both parameters
Cutoff Env. Amount
and
Env. Velocity Amount
. Therefore you
should always bear in mind what the result is, especially when the filter does not
behave as you expect. You can also create interesting effects by setting one parameter
to a positive amount and the other to a negative.
Filter Types
This paragraph describes the MicroWave II/XT/XTk’s different filter types. Most types are
based on traditional low pass, high pass or band pass structures. The following diagram
illustrates the frequency plots of these types:
Frequency
Level
Cutoff
Resonance
Frequency
Level
Cutoff
Resonance
Low pass
Band pass
High pass
Frequency
Level
Cutoff
Resonance
Velocity=40
Velocity=127
Velocity=1
Time
Cutoff
Frequency
Cutoff
Env.
Velocity
Amount
User’s Manual MicroWave II • MicroWave XT • XTk
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