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6-56

Program Mode

Function Soft Buttons

passing through. With the LOPASS function still selected, press the Edit button. This brings you

to the main parameter for the LOPASS object on the DSPCTL page, which is LP Frq (you can also

reach this page using the DSPCTL soft button.) Here you can adjust the initial value of the

function, in this case it is cut o frequency for the low pass lter. For this example, leave this

initial value set to its default. With the LP Frq parameter selected, press right on the cursor button

to get to this function’s sub page (the right half of the display.) Select the Veltrk parameter and

the oscillator sound duller. This method can be used to control any DSP function that is loaded

into an algorithm. See Common DSP Control Parameters in Algorithm Basics on page 6-23 for other

control parameters available on the DSPCTL page.

Alternatively, you could assign cut o frequency to be controlled by any continuous controller,

such as the Mod Wheel. Start again with the unedited patch 1019 VA1NakedPWMPoly. Follow

the same steps as above, but instead of changing any parameters on the DSPCTL page, press the

DSPMOD soft button to reach the DSP Modulation page. On the left side of the screen, choose the

parameter for LP Frq, and then press the right cursor button to reach the LP Frq sub page. On this

sub page, you can assign any continuous controller to control the cut o frequency of the

LOPASS function (or the main parameter for any function loaded in the current algorithm.)

o frequency, and values in between will increase the cut o frequency by a scaling between 0

and 10800 cents. Now you have the same control over cut o frequency as you did in the

previous example, but now it is controlled by the Mod Wheel. Overall, moving the Mod Wheel

up will increase the cut o frequency, making the oscillator sound brighter, and moving the Mod

Wheel down will lower the cut o frequency, making the oscillator sound duller. This is useful to

control a classic “lter sweep” sound. The above method can be used to control any DSP function

that is loaded into an algorithm, and you can choose any continuous controller as a control

source.

Note: When adding programs with controller assignments to a setup in Setup mode, your setup must have

its controllers assigned to the same destinations that you assigned as control sources in your program. An