Volume and Pan
This unit is the last part in the MicroWave II/XT/XTk’s signal routing. Its purpose is to set the
volume and the pan position of the sound. After that the signal passes the D/A converter
and can be taken from the audio jacks on the rear panel.
To understand the operation of this unit, it is important to know that the Amplifier Envelope
is always acting as a modulation source for the volume. This means that an audio signal
can only pass through if the Amplifier Envelope is triggered and opened.
Finally a chorus effect can be added to enhance the sound.
Volume
Amplifier
Volume
0…127
Determines the master volume of the sound program.
Velocity
-64…+63
Specifies how much volume will be affected by keyboard velocity. Use this feature to give
more expression to the sound. With a setting of
0, velocity will have no effect on the
volume. Classic organs work in this way because they do not have dynamic response. For
positive settings, the volume rises up to higher velocities. This is the most commonly used
setting which gives a piano-like character. For negative settings, the volume falls up to
higher velocities. This gives an untypical character suitable for effect sounds. As the
Amplifier always works in conjunction with the Amplifier Envelope, this parameter actually
determines the envelope velocity amount. The following diagram illustrates this
functionality:
Keytrack
-200%…+197%
Determines how much the volume depends on the MIDI note number. The reference note
for Keytrack is E3, note number 64. For positive settings, the volume increases on notes
above the reference note, for negative settings the volume decreases up to higher notes and
vice versa. This setting can be useful to adjust a sound’s volume over the whole keyboard
range. Especially when extensive filtering is used, the sound can be louder on the lower or
the upper part of the keyboard. On the other side, you can apply this effect intentionally
e.g. for effect sounds.
Key velocity=64
Key velocity=127
Key velocity=1
Maximum volume
Velocity parameter = +63
Time
Volume
Key velocity=1…127
Maximum volume
Velocity parameter = 0
Time
Volume
Key velocity=64
Key velocity=1
Key velocity=127
Maximum volume
Velocity parameter = -64
Time
Volume
Volume
|Velocity |Keytrack | Chorus
090
|
+40
|
+000%
|
on
58
User’s Manual MicroWave II • MicroWave XT • XTk
