The Kyma Language for Sound Design, Version 4.5

The Field Layout shows a miniature version of the Sound editor for this new class. Whenever you select
a parameter, its position in the parameter fields is highlighted.
Double check that Expand has a check mark in it. When checked, the Expand option will cause this new
kind of Sound to expand before any transformations are applied to it. The significance of this will be explained
in Parameter Transformers: Symbolic Sounds on page 198.
Close the class editor and save an instance of this new class. The instance of your new class should appear
highlighted in the file window; its name will be Stereo.
Edit the new instance of class Stereo by double-clicking on it. Note the positions of the parameter fields
on the bottom half of the Sound editor.
Play the Sound. From the Modifiers category of the system prototypes window, drag Chopper into the
Variable field. Play Stereo. Try entering different values for the Left parameter and play again. Click
on the parameter label of the Left field. It will tell you that no help is available, but we will soon fix that.
Close the Sound editor, saving the changes that you have just made. With Stereo still selected, choose Expand
from the Action menu. Double-click on the new Sound, called StereoLocator, that appears in the
Sound file window. Notice that this Sound is like the original Attenuator that we made the class out of,
but this Sound has specific values assigned for the Left, Right, and Input parameters. When you play
a Sound, it is first expanded to its most primitive components and then sent to the Capybara. You can use
Expand from the Action menu to see how complex Sounds are actually constructed out of simpler component
Sounds.
Close the Sound editor. Select Stereo again, and choose Edit class from the Action menu. Edit class lets
you edit an already existing class. From the Action menu, choose Retrieve example from class. This
saves your original example Sound in the Sound file window. Go to the Sound file window and doubleclick
on the Sound that was just retrieved. Notice that Retrieve example from class, unlike Expand, saves
the original example Sound with the variables still in it. Close the example Sound, and go back to the
class editor, so we can add some on-line help messages to the new class.
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