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Program Mode
The Algorithm (ALG) Page
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 two-input functions, appear only in algorithms that are structured for two-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 parameters to which you can patch a variety of control
sources to modify the behavior of the DSP functions themselves.
The parameters on the various control-input pages are very similar; in fact, there are six
parameters that appear on almost every page. Consequently we refer to them as the common
DSP control parameters. Although the parameters on the control-input pages differ slightly from
function to function, you can expect to see some or all of the common DSP control parameters
whenever you select the control-input page for any of the DSP functions.
You'll recognize the common DSP control parameters, along with several other parameters. Keep
in mind that there's a set of common control parameters for each of the DSP functions; in this case
we're describing them only as they apply to the pitch control function.
Function-parameter
Unlike the other five common DSP parameters, the function-parameters are accessible on both
the DSPCTL page and the DSPMOD page. They are listed along the left-hand side of each page;
any changes made to them on one page are reflected in the other. The label of each function-
parameter depends on its function in the current program's algorithm. For example, the Pitch
function's function-parameter is labeled Pitch; whereas the two-block Lopass function's
function-parameters are labeled LP Frq and LP Res.
By adjusting the function-parameter, you can add a fixed amount of adjustment to any DSP
function. For the Pitch function, adjusting the function-parameter will change the pitch in
semitone increments. Use this as a starting point to set the pitch where you want it to be normally.
This will shift the pitch of the currently selected layer, and will affect the playback rate of sampled
sounds. Sampled sounds have an upper limit on pitch adjustment. It's normal for the pitches of
sampled sounds to "pin" (stop getting higher) when you adjust the pitch upward in large
amounts. The oscillator waveforms can be pitched higher. Any sound can be pitched downward
without limit.
The primary use of adjusting the function-parameter or fine adjust parameter (which will be
explained under the next heading) is to offset the cumulative effects of the other DSP function
parameters. For example, you might set a high value for key tracking (defined below) for a
dramatic change in effect across the keyboard. The effect might be too much at one end of the
keyboard, however, so you could use one of the adjust parameters to reduce the initial amount of
that effect.
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