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PC3A6
Руководство по эксплуатации Страница: 80

Kurzweil PC3A6 Руководство по эксплуатации онлайн [80/423] 777181

Kurzweil PC3A6 Руководство по эксплуатации онлайн [80/423] 777181

Program Mode

The Algorithm (ALG) Page

6-25

The PC3A always uses real values of measurement, rather than just arbitrary numbers, for

adjustable parameters. This means that you specify pitch in semitones (ST) and cents (ct), and

amplitude in decibels (dB).

Remember that the parameters on the control-input pages are cumulative—they can add to or

subtract from the eects of the other parameters on the page, depending on their values. For

example, even if you’ve adjusted the pitch of a sample so high that it pins, the eects of the other

parameters may bring the pitch back down to a workable range.

Fine Adjust Parameter

You can add slight detuning to the pitch with the ne adjust parameters. Notice that there are

actually two ne adjust parameters for the Pitch function: one that changes the pitch in cents

(100ths of a semitone), and one that changes it according to its frequency (in increments of

Hertz—cycles per second). Since we’re discussing the universal control sources here, and not

specically pitch, we’ll move on for now, as the Hz parameter applies only to pitch-related

functions. See The PITCH Page on page 6-21 for a more thorough description of Hz.

Hard-wired 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 dierent 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 eect on Middle C. If

you set a nonzero value for key tracking, the eect 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 PC3A) will play a normal C 4. Triggering C

#

4 will

play a note 5 cents higher than C

#

4. Triggering D 4 will play a note 10 cents higher 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. It’s

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.

Programmable Parameters

Source 1 (Src1)

This parameter takes its value from a long list of control sources 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

PC3A or MIDI controller, reaching a maximum of 1200 ct (12 semitones, or one octave).

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