posted 27 September 2003 14:01            

I want a looping sample player programmed so that each repetition will have a new transposition (I'll use a constrained nextRandom for transposition variable), but can't use a purely cyclical signal/event to trigger nextRandom because each repeat is obviously going to be a different length.

posted 27 September 2003 19:03            

2 s * (([Interval / 12] L * 12) / 12) twoExp

for the OnDuration (where [Interval / 12] is a Sound that will give the transposition interval you desire). In the Sample, you would use:

default nn + ([Interval / 12] L * 12 nn)

for the Frequency. (You could use more than an octave range if you want, change the * 12 in both places above to reflect the desired maximum transposition.)

Set the FunctionGenerator's sample to be Rectangular -- this will give you a pulse that last as long as the sample is on. Feed the FunctionGenerator into a FeedbackLoopInput Sound and paste the FeedbackLoopInput into the Gate field of the Sample. This will make the trigger available for use elsewhere and also provide it to the Sample.

Now, for the Interval generating Sound. Use a Constant and set its Value to:

((1 - [FeedbackLoopOutput] L asLogicValue) nextRandom * 12) rounded / 12

where you have copied the FeedbackLoopOutput Sound from the Prototypes. This expression generates a random integer half step transposition interval once per trigger. Edit the FeedbackLoopOutput Sound and set its delay down to 32 samp.

The last step is to paste a Constant into the Trigger of the FunctionGenerator. Edit the Constant, copy the Value from the Value of the interval generating constant, paste it into the trigger Constant and edit it look like:

1 - [FeedbackLoopOutput] L asLogicValue

This closes the trigger feedback loop.

The idea is that the FunctionGenerator fires for the same duration as the Sample, at the end of the FunctionGenerator's waveform it outputs zero. The zero is fed back to the two Constants where the part of the expressions that read:

1 - [FeedbackLoopOutput] L asLogicValue

turn the zero into a one, triggering the generation of a new random interval and also retriggering the FunctionGenerator.

(We would post the Sound here, except that we did it in Kyma X and you would not be able to open it until next week :-) )

posted 30 September 2003 00:41            

... and easy to see where Green Tea saw a market niche.

quote:

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Originally posted by SSC:
Edit the FeedbackLoopOutput Sound and set its delay down to 32 samp.

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why 32 samp??

posted 30 September 2003 06:12            

i've been following this thread and i feel like i'm in the same boat as you.. with the reply "easy for you to say, SSC" !.. indeed, they are kyma masters.. and this stuff is mind-boggling..

would you mind posting your sound to the forums? i'd like to follow carla's detailed instructions and see if i can get it to work.. sort of test myself...

if you aren't in a position to share the sound, that's OK, too.. but it never hurts to ask!

thanks!

quote:

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Originally posted by phillipm:
hmmm... easy for you to say... :-)

... and easy to see where Green Tea saw a market niche.

why 32 samp??

Actually it's the least of my worries ... I finally managed to put together something that *seems* to follow the recipe above, but it doesn't continue looping and transposing :-(

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posted 30 September 2003 10:05            

AND, the expression for the duration of the FunctionGenerator should be:

2 s * (([Interval / 12] L * 12) / -12) twoExp

posted 01 October 2003 23:57            

TransposingLooper.kym

quote:

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Originally posted by taylor12k:
Hi phillip,

would you mind posting your sound to the forums? i'd like to follow carla's detailed instructions and see if i can get it to work.. sort of test myself...

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