3 ms·
Yes, i hate when people talk about Nyquist as if its some Panacea. Its vwry “spherical cow”. It assumes all your filters, DACs, are perfect, and that time is i
by TylerE 4y ago
Yes, i hate when people talk about Nyquist as if its some
Panacea.
Its vwry “spherical cow”. It assumes all your filters, DACs, are perfect, and that time is infinite.
- masklinn 4y agoThe exact same spherical cow issue applies, with worse effects, when you increase your sampling rate unnecessarily. And you can use oversampling to correct for the filtering issues. That's pretty standard in modern DACs and ADCs.
- PaulDavisThe1st 4y agoNyquist isn't about such assumptions at all. It is an information theoretic value, based on the provable claim that there is zero information present in the original analog waveform that is not represented in the digital version. Yes, your filters, DAC and speaker wire could still create a less than ideal listening situation, but the fundamental aspect of the Nyquist frequency is not concerned with any of that.
- kazinator 4y agoThere is zero information present in a waveform that is not contained in the digital version, if that original waveform is confined below the Nyquist limit. Either it is that way already, or else is derived from an original-original waveform that isn't, by low-pass filtering.
- PaulDavisThe1st 4y agoThat's an excellent coda/qualification of what I said. Put into a more listener centric context: there's no audible information in a waveform that is not captured by sampling it at 44.1khz.
- Dylan16807 4y agoYou only need so much margin, though.