Hi Paul: This is an interesting area of investigation too. The audio on just about ALL CDs undergoes sample-rate conversions. Most A-D and D-A converter designs involve oversampling, or even 1-bit to PCM conversion (for instance, Philips Bitstream, which evolved into DSD; for instance the Panasonic MASH playback system). Just because a hardware or software manufacturer claims something is "transparent," doesn't mean it's true in all situations, or to all listeners. -- Tom Fine ----- Original Message ----- From: "Paul Stamler" <[log in to unmask]> To: <[log in to unmask]> Sent: Tuesday, March 25, 2014 12:51 PM Subject: Re: [ARSCLIST] Fwd: [ARSCLIST] "Why Vinyl Is the Only Worthwhile Way to Own Music" > On 3/25/2014 4:44 AM, Tom Fine wrote: >> So I'm not ready to fully abandon Nyquist, but I do agree that most CDs >> I've heard had their troubles in the high top end. What I need more >> science to figure out is, whether that's a basic flaw with the Nyquist >> theory or a flaw with most A-D encoding (and, more recently, >> trans-coding) in the CD era. > > Or, perhaps, the analog stages that precede the actual A/D encoder. If the recording ever > underwent sample-rate conversion, that can raise problems also. > > Peace, > Paul > >