Key Track; Filter Key Track - Korg wavestate native User Manual

Key Track

Filter Key Track

Keyboard Track
Most acoustic instruments get brighter as you play higher
pitches. At its most basic, keyboard tracking re-creates this
effect by increasing the cutoff frequency of a lowpass filter
as you play higher on the keyboard. Usually, some amount
of key tracking is necessary in order to make the timbre
consistent across the entire range.
The wavestate native keyboard tracking can also be much
more complex, since it allows you to create different rates
of change over up to four different parts of the keyboard.
For instance, you can:
• Make the filter cutoff increase very quickly over the
middle of the keyboard, and then open more slowly–
or not at all–in the higher octaves.
Make the cutoff increase as you play lower on the
•
keyboard.
• Create abrupt changes at certain keys, for split-like effects.
How Key Track works: Keys and Slopes
The keyboard tracking works by creating four ramps, or slopes, between five keys on the keyboard. The bottom and top
keys are fixed at the bottom and top of the MIDI range, respectively. You can set the other three keys–named Low, Mid,
and High–to be anywhere in between.
The four Slope values control the rate of change between each pair of keys. For instance, if the Low-Mid Slope is set to
0, the value will stay the same between the Low Key and the Mid Key.
You can think of the resulting shape as being like two folding doors attached to a hinge in the center. At the Mid Key
(the main hinge), the keyboard tracking has no effect. The two folding doors swing out from this center point to create
changes in the higher and lower ranges of the keyboard.
Slope
Positive slope values mean that the keyboard tracking output increases as you play farther from the Mid Key; negative
slope values mean that it decreases. Because of this, the meaning of positive and negative slopes changes depending on
whether the slope is to the left or right of the Mid Key.
Low and Low-Mid: negative slopes make the output go down as you play lower on the keyboard, and positive slopes
make the output go up.
Mid-High and High: negative slopes make the output go down as you play higher on the keyboard, and positive slopes
make the output go up.
The table below shows how the slopes affect the modulation output:
Slope value
–Inf 0 to minimum in 1 half-step
-10.00 0 to minimum in 6 semitones
–5.00 0 to minimum in 1 octave
–1.00 0 to minimum in 5 octaves
0 no change
+1.00 0 to maximum in 5 octaves
+5.00 0 to maximum in 1 octave
+10.00 0 to maximum in 6 semitones
+Inf 0 to maximum in 1 half-step
Key Track
Modulation change
At the Mid Key, the modulation amount is always 0.
Mod Amount
Slope= +Inf
Max
Slope= +1.00
0
Slope= –0.50
Slope= –1.00
Min
Slope= –Inf
Mod Amount
Low Key
62
Slope= +1.00
Mid Key High Key
Slope:
+12.00
+1.00
00.00
–1.00
–12.00