posted 06 June 2006 00:10            

3Filters.kym

I have a couple of questions:

If I want to encapsulate a class that I want to contain radio buttons that are present in the sounds that are inside the class (for example, the "type" field in a filter), how would I do it? I can't use green variables for that, since the field in the original object doesn't allow that.

Also (well, maybe this is a bug report and not a question) - if I edit an already encapsulated class using the Edit Class menu item, if I change the input/output types, input/output channels, nonaudio side effects box, or the icon, I can't seem to get the icon for the class to change. Or it does - kind of: When I double click on the encapsulated class, I see the changed icon, but if I drag it to a sound file, it reverts back to the old class. Unless it is a new sound file, in which case it stays the new icon.

Since this last one is a little hard to explain, I'll attach an example (something in progress)

posted 06 June 2006 10:55            

3FiltersWithType.kym

What we did was to use a ParameterTransformer to replace the field's value with a variable, and then choose the proper parameter type in the class editor (filterType). When making the class, you need to enter #lowPass when it asks for the value for the example.

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posted 06 June 2006 22:46            

I hadn't had any occasion to use a parameter transformer yet, and had overlooked that part of the manual.

This part I'm not sure I understand:
snd doNotExpandFirst; doNotTransformSubSounds.

Is this equivalent to unchecking the "Expand" box in the Class Edit window? I actually just tried it without that line, and it still seems to work just fine, even without "Expand" being unchecked.

posted 30 June 2006 12:02            

Continuing on with this encapsulated class, which has the type of filter being assigned to variable ?type by a ParameterTransformer, I was wondering if it would be possible to use a conditional within the filter which inquires the type of filter which has been selected. Something like this in the frequency field:

(?Bypass of: #( {?CutOff} {?type eq: #highPass true: 40 false:
SignalProcessor halfSampleRate})) smooth: 0.02 s

This doesn't seem to work, but I was wondering if something like this could be done.

Thanks,
Phil

posted 30 June 2006 14:49            

quote:

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Originally posted by SSC:
CapyTalk works with numbers only (no symbols).

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I was afraid that was the case.

I think the problem with the index idea, if I'm understanding you correctly, is that I'm not sure which filter will be set by the user to be highpass, and which lowpass or allpass - I want to leave that unfixed. Oh well, this was only to try to be clever and avoid the additional cpu load of a single Gain object, with which I could implement the bypass with as well.

posted 01 July 2006 10:22            

| choices |

choices := Array with: ?Cutoff with: (?type == #highPass ifTrue: [40] ifFalse:
[SignalProcessor halfSampleRate]).

posted 01 July 2006 20:09            

When editing classes, how do I get text entered in the "Class Description" field in the class edit window to show up as help under individual parameter names? I write the name of the field and the comment specific to that parameter, but it doesn't show up when clicking on the field name.

posted 03 July 2006 23:25            

quote:

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Originally posted by SSC:
When you select the parameter name in the Class editor, there is a small text field for entering a comment (help) for that parameter.

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Oops - I'd used it before, but I missed it this time.

I've posted my filter classes on the Tweaky - thanks for the help!