Upsampling DACS: Take the Pepsi Challenge

Regarding "taking the Pepsi Challenge", I logged on to the Pepsi web site, and cannot find where they actually market a Upsampling DAC of any kind. Thinking Gthirteen confused Pepsi with Coca Cola, I visited Coke's site too....still no DAC's. Are you guys sure that these fine soft drink companies are into digital, or perhaps their "fizz" is all "0's" and no "1's".

As soon as the author gives me permission, I will post a note on this thread and will likely also build a link from our web site. Kevin Halverson

Carl, I did let "those who design them speak for themselves" by seeking out an answer on this topic from one of the leaders in digital design and then posting Jeff Kalt's e-mail reply here. Did you search for answers OR did you already know it all?!! I humbly entered this thread looking for answers to my questions regarding upsampling/oversampling. You, however, replied with your usual collection of technical terms (organized in nonsensical ways) AND got hostile to boot! Carl, nobody likes a hostile blowhard. From my limited understanding of how a digital processor works, I suspected that upsampling was the same, or nearly the same, as oversampling. After seriously considering your nonsense, I asked Jeff Kalt for an answer. I chose to ask Resolution Audio for two reasons: 1.) Resolution Audio now markets an "Upsampling" processor. 2.) I could kick myself for it now, but I actually thought that MAYBE you knew what you were talking about and just couldn't express it in a way I understood. Since you spoke so highly of Jeff Kalt's talents as a digital designer, I thought, perhaps, he could express what you could not. As we all know now, you didn't have a clue what you were talking about and upsampling and oversampling are the same thing! Oh, I performed your test. Heard a little golf ball in the top octaves and about a 2 footer in the upper bass. I don't know, I prefer listening to music (Miles Davis sounds good today), but to each his own. Jordan

Jordan, you are quite right, I'm full of nonsense, have never known what I'm talking about, and never listen to anything but pink noise on my system. I'm glad that you are so humble as to proclaim that you know so little, yet are perfectly open minded, and have found the truth of truths. Yes, indeed, nobody likes a blowhard. We all make mistakes, and it is you who is the blowhard now. Shut up already! At least I have a real man's name, and not an ambiguous-gender one....

Hi Jordan and Carl; Last night I read (twice) J. Scull's Stereophile review of Accupase's newest CD player. On the opening page, JS refers to the process Accuphase uses as oversampling, then throughout the rest of the review he refers to it as up-sampling. BTW, JS marginally preferred the Accuphase to dCS gear. Of course some question J. Sculls judgement. It was definitely confusing. And I know in previous posts on this subject, Carl has pointed this out-- that at least some of Stereophile's reviewers-- including J. Atkinson, have really extolled the virtues of high quality "up-sampling" devices. And that's why I also originally believed that up & over sampling were different. It was only after hearing from some of the leading industry people such as Jeff Kalt and Kevin Halverson that I changed my mind. In short, Stereophile led me and many others down a "screwy amd misleading path". I see no point in trying to contact Stereophile about this as I've tried emailing them in the past with no results. Cheers. Craig.