posted 10 September 2004 08:48            

?arrayOfTimes do: [ :i |
del start: 0 s
anInput: (inputs at: 1)
delay: (i / ?maxDelay)]

As a next step I tried to add a panner so that the output of each delay sound would get a specific panning value, and here's where I ran into trouble. I've gone over the documentation a few times and I just can't figure out how to do it. There doesn't seem to be anything about making scripts to reproduce a structure with more than one step of processing (as in a delay with a green variable for DelayScale, then a panner with a green variable for Pan, and making several copies of that structure with a do: loop, so that each copy will have its own parameter values). I couldn't find any useful examples in the Kyma Sound Library either. But surely there must be a way to do this in Kyma.

I guess the question is how to reference each copy of the delay sound so that you can feed it into an instance of another sounds (such as a panner). Does anybody have any suggestions, or examples of this type of process that you could share? Thanks.

posted 10 September 2004 10:02            

The easiest approach would be to modify the Sound you called del. In the Sound editor, drag a Pan module to the right of the del Sound. Set its Pan parameter to a green variable (say ?pan). Then you could modify your script to read something like:

?arrayOfTimes do: [ :i |
panner start: 0 s
anInput: (inputs at: 1)
delay: (i / ?maxDelay)
pan: i / (?arrayOfTimes last)]

"I guess the question is how to reference each copy of the delay sound so that you can feed it into an instance of another sound..."

If instead you add Pan to the Script's inputs and set Pan's input to the Variable module (renamed to 'input'), you could write:

?arrayOfTimes do: [ :i |
pan start: 0 s input: (del anInput: (inputs at: 1) delay: (i / ?maxDelay))]

Note that I used a Variable Sound named "input" and you used a Variable Sound named "anInput", but the effect is the same.

posted 11 September 2004 13:08            

?arrayOfTimes do: [ :i |
panner start: 0 s
anInput: (inputs at: 1)
delay: (i / ?maxDelay)
pan: i / (?arrayOfTimes last)]

What does the "last" message sent to ?arrayOfTimes mean, and why is it necessary? And what would be the easiest way to add an array of panning values similar to the ?arrayOfTimes variable? I tried something like this:

?arrayOfTimes do: [ :i |
| nbr |
nbr := (?arrayOfPans at: 1) .
panner start: 0 s
anInput: (inputs at: 1)
delay: (i / ?maxDelay)
panning: c
nbr := nbr + 1)]

But obviously the syntax (to begin with) isn't right. If I move the last statement to go before the panner, it gives me an error message saying that the message #clipTo01 sent to an instance of Array wasn't understood.

I also tried using a count to reference the ?arrayOfPans. In SuperCollider the first argument for the do loop is always item (as seems to be the case here too), and the second argument is count. But it doesn''t seem to work that way here (it complains that the block expects 2 arguments when I just declare another argument and then use it). How can I know the default arguments for the do: method? Or how do I assign it to be a count? (excuse my sloppy terminology)

I know how to do this sort of things in SuperCollider, but it seems to me that if I could learn how to do them just as easily in Kyma I could do so much more with them, because of all the other features that Kyma has. I'd be curious to know if many people are using Kyma like this, and if so, I'd really appreciate it if someone could share some code for learning purposes. There really isn't that much code available in the sound library and manual. Thanks.

posted 12 September 2004 12:17            

(?arrayOfTimes at: ?arrayOfTimes size)

To have an array of panning values requires rearranging the loop to use an index rather than each value in the array. For example, you could do something like

1 to: ?arrayOfTimes size do: [ :i | | t pan |
t := ?arrayOfTimes at: i.
pan := ?arrayOfPans at: i.
panner start: 0 s anInput: (inputs at: 1) delay: (t / ?maxDelay) panning: pan]

For learning about the use of Smalltalk in Kyma, the best place to start is by reading the Kyma X Revealed! chapters on Smalltalk and Capytalk, starting on page 215, and referring to the Capytalk and Smalltalk references on page 369 and page 375. Kyma X Revealed! is installed with Kyma X in the Documentation folder of the Kyma folder. (Also, it is available as a physical book.)

posted 12 September 2004 15:03            

As for learning smalltalk, I've been studying the Kyma X revealed! chapters on smalltalk and capytalk (as well as the quick reference appendices). What I meant is if there is anything else that you would recommend to go into more detail. There is the squeak stuff and so on, but I'm really only interested in using smalltalk inside kyma. SuperCollider has a lot of simmilarities with smalltalk (since it comes from it), and I think that's part of what's throwing me off (that is, what is NOT so simmilar). I guess what I would need is something to calrify all the little differences in syntax and so on, as well as reference to the classes and methods. I guess for now I'll keep studying the kyma manual and have a look at some of the old smalltalk books on the web. Then maybe I'll bug you with some more questions in a while.

Thanks for all your help!

posted 13 September 2004 11:50            

I tried running the code that you sent me yesterday, but it gives me an error message: "the message #clipTo01, sent to (1 0 0.5) <which is the array of pans I entered>, an instance of class Array, was not understood."

Any idea why that would be? Here's the sound in which I'm using it (the rightmost sound is just an annotation):

pan arrays (add original)
. add original (dir, Multi-tap script)
. . dir (source)
. . . source
. . Multi-tap script (source, panner)
. . . source
. . . panner (del)
. . . . del (anInput)
. . . . . anInput

Thanks for your help!

posted 16 September 2004 08:19            

template.kym

Thanks!