Working with Curves

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Curves operate on a non-normalized data source. If your noise has a range from -1 to 1 (so a a single octave with an amplitude of 1 - amplitude is range at first octave), make sure your curve also goes from -1 to 1.

An example on noise range, assuming gain - the multiplier for each octave's amplitude compared to the previous octave) is set to 0.5.

Octave 0's range will be -10k to 10k, octave 1 will add -5k to 5k on top of that, coming to a total range of -15k to 15k, octave 2 will add -2.5k to 2.5k on top again, coming to -17.5k to 17.5k, and so on for each octave.

If your noise has an amplitude of 10,000, and several octaves, you will want to make sure your curve ranges from something more along the lines of -20,000 to 20,000.