Wednesday, March 27, 2013
Vol IV No 6
I now believe it may be possible to ascertain the digital/non-digital status of vinyl records with nothing more than a jeweller's loupe. Obtain several vinyl records which you know are digitally processed and several you know are all-analog. Use the loupe to examine the grooves closely at varying points on each record. You should note that the digitalized record grooves will be very, very smooth, while the all-analog grooves will have all sorts of ripples, which correspond to (infinite) audio detail. (The digital grooves are smooth because of filtering which conceals the sampling frequency.)
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