| example: (I hope it is correct)
processing chain with 4 steps. everytime some float format result is truncated to 24 bit fixed.
without dithering, the errors would be correlated to the signal and add up. in a fictional environment there would be 4 times the error signal level.
with dithering, the errors are turned into decorrelated noise. there is a law about summing of independent noise sources. eventually we end up with twice the noise level in 4 processing steps, instead o4 4 times the error (distortion) level.
therefore dithering is recommended, the more processing takes place.
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sorry 4 poor english |