Korg modvawe, Руководство пользователя

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Filter
57
Filter Key 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 modwave 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 Modulation change
–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
Low Key Mid Key High Key
+12.00
+1.00
00.00
–1.00
–12.00
Slope:
0
Slope= –1.00
Slope= +1.00
Slope= +1.00
Slope= –0.50
Slope= –Inf
Slope= +Inf
At the Center Key, the modulation amount is always 0.
Mod Amount Mod Amount
Max
Min