Xref: utzoo sci.electronics:18203 comp.dsp:1337 Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!gatech!usenet.ins.cwru.edu!eagle!mars.lerc.nasa.gov!tohall From: tohall@mars.lerc.nasa.gov (Dave Hall (Sverdrup)) Newsgroups: sci.electronics,comp.dsp Subject: Re: A question about the Nyquist theorm Message-ID: <1991Mar5.155748.29328@eagle.lerc.nasa.gov> Date: 5 Mar 91 14:50:02 GMT References: <20408@shlump.nac.dec.com> <625@ctycal.UUCP> <11515@pasteur.Berkeley.EDU> Sender: news@eagle.lerc.nasa.gov Reply-To: tohall@mars.lerc.nasa.gov Organization: NASA Lewis Research Center Lines: 19 News-Software: VAX/VMS VNEWS 1.3-4 In article , wilf@sce.carleton.ca (Wilf Leblanc) writes... >jbuck@galileo.berkeley.edu (Joe Buck) writes: > >>[deleted] > >When I bought my CD player, it said on the front panel 'Dual D/A >converters'. For fun, I asked the salesperson what that meant. >The reply was rather funny, and of course completely inaccurate. > >What does this really mean ? (I figured maybe two distinct D/A's rather >than one D/A and two sample and holds). OK, I may be advertising my ignorance of CD player design here, but it seems to me it would be very difficult to produce right and left channel (stereo) outputs without 2 separate D/A's. My lack of expert knowledge leads me to believe that the 'Dual D/A converters' logo is like building a car with a V-8 engine and advertising 'Dual Quad Cylinder Heads' as a unique technical advancement! What is the real story? Let's hear from some CD technology wizards.