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Author Topic:   Sample Editor
MartinStehl
Member
posted 24 November 2011 01:55         Edit/Delete Message   Reply w/Quote
Hello!

I wonder how to modify the template called "Exponential Segments" in that way, that the curve will fall slower on the beginning and will have a stronger slope at the end going then to zero?
In other words it should be convex instead of concave.

Many thanks - Martin

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SSC
Administrator
posted 24 November 2011 13:14         Edit/Delete Message   Reply w/Quote
One approach would be to subtract your exponential curves from 1.

A couple of different ways to you could do this. One is in the Sample editor, select Programs>Exponential Segments Program. Scroll down to the end of that program and, in the repeat loop use:

samples timesRepeat: [
fileBuffer writeSample: 1 - (tableIndex - startIndex * expon + startExp) exp.
tableIndex := tableIndex + 1]].

Another approach would be to use Sounds. Start with the Difference Sound. In the Input, put Constant (with value set to 1). in MinusInput, put a FunctionGenerator with your current exponential wavetable set to duration 4096 samp. Add a SetDuration to the right of the Difference and set the duration to 4096 samp in preparation for making a recording. Then from the action menu choose Record to disk. This should give you a convex curving version of your exponential wavetable.

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MartinStehl
Member
posted 25 November 2011 07:23         Edit/Delete Message   Reply w/Quote
Great! It works perfect! Many thanks.

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