Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site alice.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!alice!jj From: jj@alice.UUCP Newsgroups: net.audio Subject: Re: Digital Trojan Horse? Message-ID: <4190@alice.UUCP> Date: Thu, 22-Aug-85 08:53:21 EDT Article-I.D.: alice.4190 Posted: Thu Aug 22 08:53:21 1985 Date-Received: Sat, 24-Aug-85 15:24:34 EDT References: <4189@alice.UUCP> Organization: New Jersey State Farm for the Terminally Bewildered Lines: 33 I think it's a Trojan Horse. The decent analog records I've seen, and ESPECIALLY the direct to disc records, have significant energy to 50kHz or above, although only in transients.The digital recordings just simply do NOT have anything above 25kHz, period. I suspect that the highest sampling frequencies (64kHz), and the resulting anti-aliasing filters ??25kHz??? establish the 25kHz limit. In any case, the argument is seriously suspect because digital recordings are, by necessity, band-limited, whereas analog recordings are limited only by the bandwidth of the recording chain, which can be considerably greater. I have seen some results where pre-amps had absolute fits dealing with transients with high ultrasonic content (in fact, I used to own one, I did some work to find out just WHY some of the Crystal Clear records I owned sounded so crocked on it...). Needless to say, digital records don't cause this problem. The statement is, I believe, on a par with an article I saw a few years ago in which an author claimed that even PLAYING ONE digital record on your turntable would permanantly and irrepairably destroy your pre-amp for any sort of serious listening. His comments didn't exactly consider the laws of physics, but he did get himself a considerable amount of press coverage, and some flaming on net.audio. -- SUPPORT SECULAR TEDDY-BEAR-ISM. "I see a dark cloud, On the horizon,..." (ihnp4/allegra)!alice!jj