Key Tracking; Velocity Tracking; Source 1 (Src1); Source 2 (Src2) - Kurzweil K2600 Musician's Manual

Program Mode and the Program Editor
Common DSP Control Parameters

Key Tracking

This is a quick way to get additional control based on the MIDI note number of each note you
trigger. Key tracking applies a different control signal value for each note number. In the case of
pitch, key tracking enables you to change the tuning of each note relative to its normal pitch.
Middle C is the zero point. Regardless of the key tracking value, there is no effect on Middle C. If
you set a nonzero value for key tracking, the effect increases for each note above or below
Middle C. In the case of pitch, for example, say you assign a value of 5 cents per key for the key
tracking parameter. Triggering Middle C (C 4 on the K2600) will play a normal C 4. Triggering
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C 4 will play a note 5 cents higher than C
than D 4, and so on. Notes below Middle C will be tuned lower than their normal pitches. If you
set a negative value for key tracking, notes above Middle C will be tuned lower than their
normal pitches.
Keep in mind that key tracking on the PITCH page works in conjunction with the key tracking
parameter on the KEYMAP page. This is why you can set the KeyTrk parameter on the PITCH
page to 0ct/key, and notes still increase in pitch by 100 cents/key as you go up the keyboard. ItÕs
because the KeyTrk parameter on the KEYMAP page is already set at 100 cents per key.

Velocity Tracking

A positive value for velocity tracking will raise the pitch as you trigger notes with higher attack
velocities. This is great for getting a trace of detuning based on your attack velocity, especially in
drum programs, where you can make the pitch of the drum samples rise slightly with higher-
velocity Note Ons, just as drums do when you strike them harder. Negative values will lower
the pitch as you increase the attack velocity.

Source 1 (Src1)

This parameter takes its value from a long list of control sources (you can Þnd it beginning on
page 4-7 in the MusicianÕs ReferenceÑitÕs called the Control Source list) including every MIDI
control number, a host of LFOs, ASRs, envelopes and other programmable sources.
Src1 works in tandem with the parameter beneath it on the page: Depth. Choose a control source
from the list for Src1, then set a value for Depth. When the control source assigned to Src1 is at
its maximum, the pitch will be altered to the full depth you set. For example, if you set Src1 to
MWheel, and set Depth to 1200 ct, the pitch will rise as you push the Mod Wheel up on your
K2600 or MIDI controller, reaching a maximum of 1200 ct (12 semitones, or one octave).

Source 2 (Src2)

This oneÕs even more programmable. Like Src1, you choose a control source from the list. But
instead of setting a Þxed depth, you can set a minimum and maximum depth, then assign
another control source to determine how much depth you get. Try this example. (Make sure Src1
is set to OFF Þrst, so the two sources donÕt interact.) Start with Program 199, and press Edit.
Press the PITCH soft button to select the PITCH page. Set the Src2 parameter to a value of LFO1,
then set the Minimum Depth parameter to 100 ct, and Maximum Depth to 1200 ct. Then set the
Depth Control parameter to MWheel. This lets you use the Mod Wheel to vary the depth of the
oscillation in pitch generated by the LFO.
Now, when the Mod Wheel is down, the pitch will oscillate between a semitone (100 ct) up and
a semitone down (the default waveform for LFO1 is a sine wave, which goes positive and
negativeÑif this perplexes you, see the MusicianÕs Reference, where thereÕs an explanation of
how the K2600 generates and interprets control source signals). With the Mod Wheel up, the
pitch will oscillate between an octave up and an octave down.
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4. Triggering D 4 will play a note 10 cents higher