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Originally Posted by Dean Roddey  You are talking about something different. You are talking about frequency, I'm talking about amplitude resolution. Yes, given two sampled points, you can interpolate a curve between them. But if you are capturing sample points that are 8 times more strongly quantized, then the curve you are creating is between those more heavily quantized points. The Nyquist stuff only talks about recreation of the curve from the points, it doesn't have anything to do with how accurately the sample points are captured in terms of their amplitude.
If you take the same signal and capture it with 8 times fewer possible amplitude levels, then each sample point will have to be pushed further from the actual amplitude level because those are the only sample points you have to work with. So it's dynamic (amplitude) resolution that's I'm talking about here, not frequency. |
No I _am_ talking about amplitude resolution. Read the link I added and the others like it...