February 12, 2010 9:46 AM Subscribe
Are there any crackpot signal processors in the house?
I am working on a data set which is sampled right at Nyquist in X, in Y, and in time for reasons of budget. I hate this. I have a vague memory of seeing an erstwhile bona fide document many years ago regarding sound engineers recording at 10 X Nyquist and noticing a difference on extreme subtleties (I swear the example they used was rapid pitch changes by opera soprano Cecilia Bartoli). I am sure the consensus expert opinion is a little room past Nyquist to roll off your filter in the Digital to Analog conversion process is scientifically factually the only thing real humans ever should pay for. My Oppenheim and Schafer is well-worn. Still I am not convinced. Does anybody remember the document that I remember? Is there another forum I could post this question without compromising my professional reputation?