Kurzweil Forte - Manual (Page 176)

Program Edit Mode
Editing VAST Programs With KVA Oscillators
7-79
RES NOISE
A noise generator combined with a low pass filter with resonance control. Use the Noiz Frq
parameter to control the cut off frequency of the filter. Use the Noiz Q parameter to control
the amplitude of the resonance (a boost or cut at the cut off frequency). One technique for
use of this function is to set a high value for Noiz Q (so that you hear a the resonance create
a tone,) and then on the DSPCTL page set C4 as an initial frequency for Noiz Frq, and
set Keytrk to 100ct/key on the Noiz Frq sub page. Doing this causes the noise resonance
frequency to match the note of the key played.
SHAPED SAW
The Shaped Saw oscillator is a sawtooth oscillator with the ability to morph its output shape
between sawtooth and sine wave (without crossfading). This oscillator’s distinctive parameter
is Shape, which controls the morphing. With Shape set to 0, the oscillator produces a pure
sawtooth wave. With Shape set to 127, the oscillator produces a pure sine wave. Values in
between morph between the two wave shapes.
PWM (Pulse Width Modulation) [Aliased (not recommended)]
This oscillator’s distinctive parameter is PWM Wid, which adjusts pulse width from values of
1-99. With PWM Wid set to a value of 50, PWM produces a square wave. The further the
PWM Wid parameter is set from 50, the narrower the pulse width becomes, changing the
shape of the output waveform and thus altering the oscillator’s tonal quality.
3 Block:
PWM (Pulse Width Modulation) [Anti-Aliased (recommended)]
Same as 2 Block PWM, See above.
4 Block:
SYNC SAW
Sync Saw consists of two saw waves, one that you hear (the slave) and one that controls the
slave (the master). This oscillator’s distinctive parameter is SyncOff, which controls the offset
of the slave and master waves. With SyncOff set to 0, the master has no effect on the slave.
When an offset is set, the slave restarts its wave cycle every time the master wave completes
a cycle. Offsets cause the slave to restart its cycle in the middle of normal sawtooth cycles,
which causes the slave’s waveform shape and sound to be altered.
SUPER SAW
The Super Saw oscillator consists of two saw waves. This oscillator’s distinctive parameter is
Detune, which has settings from 0-50 cents, allowing you to detune both of the saw waves
by up to 50 cents away from the root pitch of the key played. Detune affects both saw waves,
one is detuned above the original root pitch, and the other is detuned below the original root
pitch.