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SPECTRALIS
the numeric buttons. You can now play this part with your MIDI-keyboard. Once
you’ve selected the part, the encoders of the Spectralis frontpanel are assigned to
the selected synth part. You might want to select a multi-sample with lots of overtones.
Waveform multi-samples like "SFSaw" or "Puls70" (both part of the downloadable
"multis.SLC" soundbank) are perfectly suited for this task.
Using the buttons
[12dBLP]
,
[12dBHP]
and
[12dBBP]
you can activate the desired
filter function. The
(Cutoff LP)
-knob changes the frequency of the selected sound
directly. When you are activating the filter you will immediately hear a sound-change,
as we have set the filter approximately to a medium frequency in the factory settings,
so there is an audible signal with all filter functions. When switching on one of the
[12dBXX]
-buttons you will definitely be able to hear the sound changes. You should
experiment with different resonance settings to get an idea of the frequency changes
possible.
3.2.10 Envelope control of the filter frequency
The envelope allows automatic frequency control of the multimode filter. In order to
make the envelope control of the filter audible, the filter should not be completely
opened. When the envelope amount is set to a positive value and the filter frequency
is already set to it's highest frequency, the envelope will not affect the sound at all.
a.)
For your first try use the
[12dB LP]
-button
to activate the lowpass mode.
b.)
Set the cutoff-frequency to a value which either will make the sound appear
filtered heavily or not audible at all.
c.)
Turn the
(EG-Depth)
-encoder clockwise, until the envelope control takes control.
d.)
Push the
(EG-Depth)
-encoder-button, to prompt the envelope parameters in
the display. You should see the following menu:
Cutoff Envelope
Att:0 Dcy:90 Stn:0 Rls:90
You can now change the assorted envelope parameters to create the desired envelope
shape for your frequency control.
3.2.11 Filter frequency keyboard scaling
When a Sound is played in different regions of your keyboard, the frequency of the
fundamental and all overtones are being shifted right along. When the cutoff-frequency
is set to a fixed value for the whole keyboard, the resulting tone will not sound the
same in different areas on your keyboard because some transposed overtones will
already be affected by the cutoff frequency setting at higher notes on the keyboard
where the same sound beeing played two octaves down still is audible with the
complete overtone structure. To avoid this from happening, it is possible to shift the
filterfrequency dependent on the MIDI note number. This kind of control is called
”Keyboard-Scaling”.
"How to...?": Editing DSP-synth sounds
Summary of Contents for Spectralis
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