FXPANSION DCAM SYNTH SQUAD, Руководство по эксплуатации

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6
7:7 Tracking the keyboard
Pitch keytracking
It is usually vital to modulate parameters according to the pitch of keyboard input. This type of modulation is used on
oscillator pitch to create a musically useful effect according to the keys played – in other words, to scale notes up the
keyboard in semitones. It can also be used to ‘play’ the frequency cutoff of a filter, which is especially useful when using a
self-oscillating filter.
Keytrack controls in Strobe
Keytrack depth is provided as a dedicated control for several parts of Strobe – for the osc
Pitch
,
Pulse Width
and filter
Cutoff – in order to facilitate quick and easy programming.
Keytracking controls in Cypher
Cypher features Keytrack on/off buttons for each of its 3 oscs, with each of its 2 filters also providing a dedicated variable
KeyTrack
depth control.
Keytracking in Amber
Due to its paraphonic nature, Amber does not feature any dedicated keytrack controls. It
does, however, include hard-wired, non-adjustable keytracking of its 1-pole paraphonic
tone filters.
Amber’s paraphonic note generation reacts to the keyboard in a different way to a
conventional mono/poly synths. The pitch of all notes on the keyboard is effectively
fixed and generated constantly (although their pitch can be changed together using
the master tuning controls). Notes are heard when the keyboard gates each note’s
individual envelopes and VCAs.
If you’re using more than 1 voice, keytracking can be used polyphonically (monophonic
for each voice) by using the Pitch source in the TransMod system.
Using keytracking in the TransMod system
Keytracking can be used in the TransMod system via the Pitch modulation source (found
in the Poly source sub-menu).
The Pitch modulator is simply a value that increases by 1 over each octave.
Therefore, keyboard input can be used as a TransMod source and scaler for affecting
any synth parameter polyphonically.
Keyboard zones
Keyboard zones (keyzones) are intended to be used alongside the TransMod system’s
Load to Mod Slot function (see section 7:3), in order to create 2 keyboard zones for 2
different patches. There is also a 2-octave range between these zones where 1 patch
can ‘crossfade’ into another.
There are 2 keyzones available: Keyzone1 and Keyzone2. These modulators output a value of 0 below a certain key,
a value between 0 and 1 within a 2 octave keyrange above this key, and a value of 1 for all keys above this 2 octave
keyrange.
The following diagram illustrates the two available Keyboard zones:
Here is an example for setting up Keyzone1:
1. Load a preset and set Keyzone 1 as the source for a TransMod slot.
2. Enable the
Load to Mod Slot button.
3. Load another preset.
4. Play the keyboard range from A2 to A4, as well as keys above and below this range. You will hear the sound change
between the 2 presets within the A2 to A4 range.