Kurzweil K2500RS, Musician'S Manual

Page: 289 / 530

DSP Functions
Waveforms
14-37
Low Frequency Waveforms: Sine (LF SIN), Sawtooth (LF SAW), Square (LF SQR)
These can be used like the waveforms above, since their frequency ranges are similar, but
theyÕre intended to be used not for their timbres, but for the shape of their waveforms. By using
low frequency values for these waveforms, youÕre basically getting extra LFOs with very
precise control parameters. TheyÕre intended to be used as inputs to drive the DSP functions in
the subsequent algorithm blocks. TheyÕre especially useful with the non-linear DSP functions,
such as xAMP.
The parameters on this page affect the pitch of the low frequency waveform in a slightly
different manner. TheyÕre all tied to the value of the Coarse Adjust parameter, so when youÕre
working with this page, youÕll want to set the Coarse Adjust Þrst, then set the values of the
other parameters to modify the initial setting. The Coarse Adjust value is multiplied by the
values of the other parameters to determine the effect on the pitch, as indicated by the ÒxÓ after
the parametersÕ values. More parameter descriptions follow below.
EditProg:F1|PCH(LF|SIN)||||<>Layer:1/1||
Coarse: 100.0Hz||||| |Src1||:OFF||||||||||
Fine||:4.00x||||||||Depth|:1.000x|||||||
||||||||||||||||||||Src2||:OFF||||||||||
KeyTrk:|2.00x/oct|||DptCtl:OFF||||||||||
VelTrk:|1.000x||||||MinDpt:1.000x|||||||
Pad||| : 0dB||| | |||||| M axDpt: 1 .000x| | |||||
<more| | F1|PCH | F2|||| | F3|||| | F4|AMP | more>
PARAMETER RANGE OF VALUES
COARSE ADJUST 0.1, 1.0, 10.0, 100.0, 1000.0 Hertz
FINE ADJUST 1.00 to 20.00 x
KEY TRACKING 0.1 to 10.0 x per octave
VELOCITY TRACKING 0.010 to 32.000 x
PAD 0, 6, 12, 18 dB
SOURCE 1 Control Source list
SOURCE 1 DEPTH 0.010 to 32.000 x
SOURCE 2 Control Source list
SOURCE 2 DEPTH CONTROL Control Source list
MINIMUM DEPTH, SOURCE 2 0.010 to 32.000 x
MAXIMUM DEPTH, SOURCE 2 0.010 to 32.000 x
Coarse Adjust (Coarse)
There are only Þve values to choose from. TheyÕre expressed in terms of their frequencies in
Hertz. Each value has a frequency ten times higher or lower than adjacent values.
Fine Adjust (Fine)
Set this parameterÕs value to 1.00 x if you donÕt want it to affect the Coarse Adjust setting.
Doubling this value (2.00 x, 4.00 x, etc.) will raise the pitch in octaves. By using Fine Adjust in
tandem with Coarse Adjust, you can achieve frequencies from .1 Hz (well below the audible
range) to 20 KHz.
Key Tracking (KeyTrk)
A value of 1.00 x per octave will keep the waveformÕs pitch uniform across the entire keyboard.
A value of 2.00 x per octave will give you the normal twelve-tone octave. Other values will give
you non-standard tunings.