12dB Low Pass followed by Wave Shaper
This new filter type consists of two components, the first being a normal 12dB low pass
filter as described in the user manual. The second component is a wave-shaper much like
the sine wave-shaping filter
Sin(x)>LP also described in the manual. The difference between
the sine wave shaper and this new shaper is that the shaping wave is no longer a sine wave
but a wave from the wavetable used by the sound. Also, wave shaping is performed after
the filter in this case.
The extra parameter
Wave, on the Filter 1 / 2 page is used to select the desired shaping
wave from the sound’s wavetable (e.g. a triangle wave):
Filter 1 / 2
���
For a nice gritty sound, try a square wave as shaping wave! Nice for organ grinders.
12 dB parallel Low-pass and Band-pass Filters
This filter type consist of two filters parallel to each other. The first filter being of the low-
pass type and the second of the band-pass type. As with the new wave shaping filter, the 12
dB low-pass filter can be adjusted the usual way as described in the user manual.
The band-pass filter’s cutoff frequency is the same as the cutoff frequency of the low-pass
filter cutoff setting except for the extra parameter
BP Offset, which adds to the band-pass
filter’s cutoff frequency. The band-pass filter’s resonance is equal to that of the low-pass
filter.
Filter 1 / 2
To select a low-pass/band-pass with the latter set to one octave above the other, do the
following:
1. Go to the
Filter 1 / 1 page and select the Dual L/BP filter type.
2. Then go to the
Filter 1 / 2 page. The third parameter should now read BP Offset.
Change this setting so that it reads
+12.
Because the BP offset is in semitones, the band-pass filter’s cutoff frequency is now an
octave above the low-pass filter’s cutoff frequency.
12 dB Low-pass Filter with Frequency Modulation
The FM-filter type is a 12dB low-pass filter where the cutoff frequency can be modulated by
the output of oscillator 2. The filter may be setup exactly like a normal low-pass filter as
described in the user manual.
The modulation amount
Osc2 FM is the extra parameter and can be found on the
Filter 1 / 2 page:
Cutoff Env. Amount|Env.Velo| BP Offset
69
|
-23
|
+14
Cutoff Env. Amount|Env.Velo|
Wave
69
|
-23
| triangle
User’s Manual MicroWave II • MicroWave XT • XTk
55
Содержание MicroWave II
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