Why Is There Different Levels Of Quantization?
That’s exactly correct. You may recall days of “16 color” displays. That means colors were quantized to 4 bits. Now “millions” or “billions” of colors are available, because they are quantized to 32 bits or more. Much finer shading is possible, and the edges are not nearly so obvious. Audio and video compression try to use coarse quantization in places where humans can’t tell. That is, they take advantage of the limitations of our brains and nervous systems.
