Kurzweil K2700 - Page 122

Program Edit Mode
Editing VAST Programs With KVA Oscillators
3-79
Pitch Settings for KVA Oscillators
Each oscillator (except for noise functions) has its own pitch parameters, and is unaected by
pitch settings that would normally aect keymaps (such as those on the Keymap page). On a
program layer, the coarse pitch parameter for the oscillator in use can be found on both the
DSP CTL and DSP MOD pages, in the parameters list below the standard Pitch parameter
for keymaps. For each oscillator, its coarse pitch parameter is named by an abbreviation
of the oscillator name followed by “Pch” For example, the coarse pitch parameter for a
saw wave oscillator will be called Saw Pch. On the DSP CTL sub page for any oscillator
Pch parameter, you can adjust ne pitch by cents and Hertz, as well as KeyTrk and VelTrk
settings for pitch.
Note: Be sure to dierentiate between the dierent pitch parameters, each used either only
for keymaps or only for KVA oscillators. e Pitch parameter on the top left of the DSP CTL
and DSP MOD pages always appears in VAST programs but only aects the pitch of
keymaps. If a KVA oscillator is being used, this Pitch parameter will have no aect 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
e K2700 comes with 25 Dierent KVA oscillators, see the sections below for details on
each type. e 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 Wiring Algorithm (ALG) Page
on page 3-54 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 nd the desired oscillator.
Some oscillators are available in two versions, anti-aliased (free of digital artifacts) and aliased
(exhibiting some digital artifacts in the higher octaves). e anti-aliased versions use more
DSP resources, but the improvement in sound quality can be quite noticeable. We strongly
recommend using the anti-aliased oscillators for most applications.
e 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.