- Author or source: Aleksey Vaneev (ur.liam@redocip)
- Type: Dithering
- Created: 2002-09-29 23:02:52
It is a more sophisticated dithering than simple RND. It gives the most low noise floor for the whole spectrum even without noise-shaping. You can use as big N as you can afford (it will not hurt), but 4 or 5 is generally enough.
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Basically, next value is calculated this way (for RND going from -0.5 to 0.5): dither = (RND+RND+...+RND) / N. \ / \_________/ N times If your RND goes from 0 to 1, then this code is applicable: dither = (RND+RND+...+RND - 0.5*N) / N.