From: utzoo!decvax!cca!hplabs!menlo70!sytek!zehntel!teklabs!tekcrd!kimr@sri-unix Newsgroups: net.audio Title: Digital vs. analog Article-I.D.: tekcrd.364 Posted: Fri Jul 16 16:06:57 1982 Received: Sun Jul 18 05:15:58 1982 For you digital audio fans, I have a thought question. There best current information on "audible differences" (admittedly reported by golden-ears, but incorporated in products by manufacturers such as NAD and Cotter) is that the fastest signal rise time the ear is sensitive to is in the 9 to 14 microsecond range. A digital signal recorded at 50kHz has a maximum possible rise time of 20 microseconds. Admittedly, analog recordings have their problems, but rise time limitations are not among them. Why isn't our technology capable of supporting, say 100kHz sampling frequencies? My favorite solution for the digital disk (assuming the 100kHz a-to-d's are the limiting factor) is to record the program using analog technology and then "half speed master" the digital disk at 50kHz and play it back at 100kHz. I, for one, will never purchase a digital recording, disk, or disk player until the sampling rates are improved. Kim Rochat