> Yes, you absolutely right. But look at that code again:
>
> for (c = 0; c < DITHER_CHANNELS; c++) {
> dp = 0;
> for (i = 0; i < DITHER_SIZE-1; i++) {
> d = rand() / (float)RAND_MAX - 0.5f;
> rand_table[c][i] = d - dp;
> dp = d;
> }
> rand_table[c][DITHER_SIZE-1] = 0 - dp;
>
> We subtract previous dither value from current to prevent noise
> modulation. I use dither table to get maximum speed.
I actually felt curious about the subtraction of the previous value too. What
do you mean by "noise modulation"? (And yes, this time I have looked it up
in Wikipedia ;)).
Regards,
Miguel
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