DCtoDaylight;379189 Wrote: > No, what I think bhaagensen is driving at, is that the Nyquist limit is > a mathematical limit theory, and that prefect reproduction up to that > limit frequency requires an infinitely long series of samples. > Obviously we aren't listening to continuous tones, so perfect > reproduction isn't possible! >
Exactly, the Nyquist limit and the whole Fourier machinery is REALLY nice and shows that sampling theory is perfect in a sense. Moreover by suitably negating and applying logic to the statements is tells us what can be done as well as what can't. However it also has limits. For instance I don't think its been proven to be THE only way to reconstruct a continous signal from discrete samples. Thus it is possible that some "hifi-hack" may actually be just as perfect... OK, that is a bit far fetched. But maybe not so in the real world? The point is that while many discussions refer to the Nyquist limit, I think that it would be more useful to know the deviation between Nyquist-reconstructed wave and the one generated by representative DAC implementations. So to rephrase my question. Has anyone seen any discussions on whether clever techniques such as upsampling etc. has any effect on this deviation? -- bhaagensen ------------------------------------------------------------------------ bhaagensen's Profile: http://forums.slimdevices.com/member.php?userid=7418 View this thread: http://forums.slimdevices.com/showthread.php?t=57631 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
