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By appropriately scaling the perturbation amount for each colour channel separately, we can also extend this to work with palettes where is different for each colour component, provided that they are still regularly spaced. Unfortunately, the less regular the palette is, the less effective this technique becomes. If we wish to leverage the strengths of ordered dithering for use with irregular or arbitrary palettes, a more general solution is needed.，更多细节参见heLLoword翻译官方下载
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Pulse-Code Modulation (PCM) — MDN Web Docs