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Oscillators
The oscillators are the first unit in the chain of the MicroWave II/XT/XTk's sound generation.
In comparison to a classic analog synthesizer, the oscillator's output signal itself is not used
as a sound source. It is the driving element for the wavetable synthesis.
Oscillator 1
Osc 1 / 1
Osc 1 / 2
Octave
Determines the octave setting of the oscillator. The reference pitch for the oscillator is
generated at MIDI note A3 (note no. 69) when Octave, Semitone and Detune is set to 0
and Keytrack is 100% . In this case the oscillator's frequency will be the same as set in the
global Tune parameter (normally 440Hz). Set this parameter to 0 if you are creating a
typical keyboard sound, set it to -1 for bass sounds. If you are programming strings or other
high pitched sound, set Octave to +1 . The following table shows the relationship between
the Octave setting and its corresponding register value, a common measurement based on
the length of organ pipes.
Semitone
Determines the pitch of the oscillator in semitone steps. The standard setting for this
parameter is 0 , but there are cases where different values are required: Most organ sounds
include a quint, therefore one oscillator's semitone parameter must be set to +7 . There are
also many lead sounds with an interval, e.g. a quart (+5 semitones). When making ring
modulated sounds, try to use +11 for the setting.
Detune
Fine-tunes the oscillator in increments of 128ths of a semitone. The audible result of
detuning oscillators is a flanging. Use a positive setting for one oscillator and an equivalent
negative setting for the other. A low value of ±1 results in a slow and soft flange effect. Mid-
ranged settings of ±5 are optimal for pads and other fat sounding programs. High values of
±12 or above will give a strong detune that can be used for accordeons or effect sounds.
User's Manual MicroWave II • MicroWave XT • XTk
Octave 1|Semitone | Detune
-2
|
+07
Pitchbend Range 1|FM Amount
02
-4...+4
Setting
Register
-4
128ft.
-3
64ft.
-2
32ft.
-1
16ft.
0
8ft.
+1
4ft.
+2
2ft.
+3
1ft.
+4
1/2ft.
-12...+12
-64...+63
|Keytrack
|
+00
|
|
010
+100%
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