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Path: utzoo!watmath!clyde!burl!ulysses!mhuxl!houxm!houxz!vax135!cornell!uw-beaver!tektronix!hplabs!hao!seismo!brl-tgr!brl-vgr!ron
From: ron@brl-vgr.ARPA (Ron Natalie <ron>)
Newsgroups: net.audio
Subject: Re: 20kHz Square Waves
Message-ID: <492@brl-vgr.ARPA>
Date: Fri, 29-Jun-84 21:57:42 EDT
Article-I.D.: brl-vgr.492
Posted: Fri Jun 29 21:57:42 1984
Date-Received: Fri, 13-Jul-84 03:57:58 EDT
References: <1361@pur-phy.UUCP> <153@mhuxm.UUCP>
Organization: Ballistics Research Lab
Lines: 8

Well sure.  If all you want to do is make square waves a D to A is just fine.
The thing generates unbelievably high frequencies every time it steps from
sample to sample.  The hard part is filtering these out of the signal.  It
is not easy for the CD player to determine the difference between a switch
between two values of a fast waveform and high and low values of a square
wave.

-Ron