Digital Drive

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

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RE: Chord up-samples?

Posted by 13th Duke of Wymbourne on June 20, 2017 at 12:46:34:
If you read interviews with Rob Watts, the DAVE designer, he states that his goal is to make as long an FIR as possible. In theory, if the original analog signal is perfectly band-limited before sampling then the perfect reconstruction filter in the DAC should have an infinite number of taps and ring forever. I suspect that is what Franks is referring to in you quotes you provided. DACs do not omit samples but upsampling DACs create 'new' samples in the process. This is done not to add information but to increase the sampling frequency of the filter. The signal bandwidth stays the same and it makes it easier to craft a given filter response.

13DoW