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RE: Chord up-samples?

"While a digital reconstruction filter does indeed create new output sample values, these are mathematically derived from and correlated with the input samples."

That's a good point and why I put 'create' in quotes. What is the interpolating filter really doing? It's outputting sample values *as if we had sampled the original signal at the new higher rate in the first place*, at least in the ideal case. In reality, there will be inaccuracies because of filter design.

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