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Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it.

RE: Question about "upsampling"

My thinking is that a good first stage filter can be followed by a mediocre second stage filter, which will be much less critical because it is operating way out of the audible band.

Whether a two stage approach or a one stage approach sounds better will depend on the particular filters involved. Note that the first stage filter increases the bit depth of the signal going to the second stage filter, so upsampling CD material to higher rates is probably a poor idea if you are using a 16 bit DAC.

Another advantage of the two stage approach is that the critical first filter can be implemented by software, making it much easier to tweak.

Tony Lauck

"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar


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