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From: dan@voder.UUCP (Dan Lai)
Newsgroups: net.audio
Subject: Re: Sheffield Compact Discs
Message-ID: <336@voder.UUCP>
Date: Fri, 31-Aug-84 13:36:22 EDT
Article-I.D.: voder.336
Posted: Fri Aug 31 13:36:22 1984
Date-Received: Mon, 3-Sep-84 20:04:02 EDT
References: <480@teldata.UUCP>
Organization: National Semiconductor, Santa Clara
Lines: 15

The sampling rate for CD is 44.1 KHz, so the sampling period is 
22.48 microsecond.  Some CD players use a single DAC, which is 
switched between the left and right channels.  When the DAC is 
shared this way, the period for the DAC becomes 11.34 microsecond.  
This switching technique causes an inter-channel phase shift.

As for Yamaha cd-x1, I don't know if it has the appropriate
"compensation".  I do know that there is only 1 DAC in Sony and 
Mitsubishi players.  Revox, Marantz, and Kyocera use 2 DACs 
(1 per channel).


Dan Lai
National Semiconductor
...!{nsc,ucbvax,apple,sda}!voder!dan