6-54
Program Mode
Function Soft Buttons
Note:
Be sure to differentiate between the different pitch parameters, each used either only for keymaps or
only for KVA oscillators. The Pitch parameter on the top left of the DSPCTL and DSPMOD pages always
appears in VAST programs but only affects the pitch of keymaps. If a KVA oscillator is being used, this
Pitch parameter will have no affect on the layer’s pitch, in which case the oscillator
Pch.
parameter
described above must be used to control the pitch of the oscillator.
Setting KVA Oscillator Type
The PC3A comes with 22 Different KVA oscillators. There are 11 high quality anti-aliased
oscillators (free of digital artifacts,) and 11 oscillators that exhibit some aliasing (digital artifacts)
in the higher octaves. The anti-aliased oscillators use up more DSP resources than the ones with
aliasing, but the improvement in sound quality is quite noticeable. We strongly recommend
using the anti-aliased oscillators for most applications.
The tables below list KVA oscillators by type and function block size. Before setting an oscillator,
you must choose an algorithm which includes a block that matches the block size for the
oscillator that you wish to use. See
The Algorithm (ALG) Page
on page 6-22
and
Algorithm Basics
on
page 6-23
for more on selecting algorithms. Once you have picked an algorithm with the desired
block size, highlight the block and use the alpha wheel to scroll through the available functions
until you find the desired oscillator.
The
SYNC SQUARE
oscillator is an 8 block oscillator that requires the use of two layers (4 blocks
each) and the Alt Input feature of cascade mode. See below for details on setting up the Sync
Square oscillator.
Note:
If you put more than one oscillator in an algorithm, you will only hear the output of the last
oscillator in the algorithm, unless an algorithm is used to route the earlier oscillator around the last
oscillator and into a MIX function block, or if the last oscillator processes its audio input.
Anti-Aliased Oscillators
Aliased Oscillators
Size
Name/Type
Size
Name/Type
1 Block
LPNOIZ (noise + low pass filter)
1 Block
SINE
2 Blocks
SINE
SAW
SINE+
TRI
SAW
SQUARE
RES NOISE (noise + low pass
filter with resonance)
NOISE
SQUARE
SINE+
3 Blocks
PWM (Pulse Width Modulation)
SAW+
4 Blocks
SYNC SAW
NOISE+
SUPER SAW
SW+SHP (Sa Shaper)
TRIPLE SAW
2 Blocks
SHAPED SAW
8 Blocks
SYNC SQUARE (master) >>,
>>SYNC SQUARE (slave)
(4 blocks each)
PWM (Pulse Width Modulation)
