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Program Mode and the Program Editor
Common DSP Control Parameters
Editor. (Algorithms 26-31, which use hard sync oscillation, have only four inputs; you can read
about hard sync functions on page 14-51.) Each of these pages has several parameters that can
modulate its related DSP function. Often a single DSP function will have more than one input.
That's why some blocks are larger, and have more than one arrow pointing to them. Each
function can be independently controlled by a variety of sources (the Control Source list),
including LFOs, ASRs, envelopes, programmable functions, and external MIDI.
In Algorithm 1, the signal flows first through a one-stage DSP function that controls the pitch of
the samples in the keymap. In fact, the first DSP function in each algorithm always controls
pitch, even though it doesn't apply in every instance. Similarly, the last DSP function always
controls the final amplitude of the signal. It can be a one-stage or two-stage function. In
Algorithm 1, it's a one-stage function.
The second, larger block indicates a single three-stage DSP function, meaning that it has three
control inputs that can be adjusted to modulate the signal.
Once again, you can't change the wiring path of an algorithm—you can simply select a
different algorithm to get a different path. And within each algorithm, you can assign a large
number of different DSP functions to each of the five control inputs. The diagram below, for
example, shows Algorithm 1 with all the possible values for each DSP function lined up under
the blocks that represent the DSP functions.
Notice that PITCH is the only value available for the first block, and AMP is the only value
available for the last block. The center, three-stage block, however, allows you to choose from
seven DSP functions. An eighth value, NONE, deactivates the block.
Common DSP Control Parameters
The type of DSP function available for any function block depends on the algorithm. Some of
the specialized functions like the PANNER are always located just before the final AMP
function. Others, like the three-input functions, appear only in algorithms that are structured
for three-input functions.
You can change the nature of each layer of a program simply by assigning different DSP
functions to the layer's algorithm. Your level of control goes much deeper than that, however.
Each DSP function has one or more inputs to which you can patch a variety of control sources
to modify the behavior of the DSP functions themselves. These control inputs are represented
by the arrows pointing down at the blocks that make up the algorithm. For each input arrow,
there's a corresponding control input page that you can select with the five special soft buttons
6-6
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PITCH
HIFREQ STIMULATOR
PARAMETRIC EQ
STEEP RESONANT BASS
4POLE LOPASS W/SEP
4POLE HIPASS W/SEP
TWIN PEAKS BANDPASS
DOUBLE NOTCH W/SEP
NONE
AMP
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