opaqueice;344553 Wrote: > The problem is average clock speed mismatch. Suppose your local clock > is 1% faster. Then you better wait a minute or so before you start > playing on a gapless 100 minute series of tracks...
Sure we can suppose things but it isn't even close to reality. A bad crystal oscillator (let's suppose this is what's in there as it's dirt-cheap) is 100 ppm accurate. This translates to 0.001% so that's 1000 times as good as your assumption and the minute-buffer-time would actually just be 0.06 seconds instead of 1 minute. These crystals list at 50 cents a piece. Now suppose the manufacturer like us and decides to put in a good crystal, quality like used in a good watch. It will be around 20 ppm accurate which translates to 0.0002% so 5000 times as good as assumed resulting in an error for that 100 minute playback of 0.012 seconds. These crystals list at $1 a piece I talked about oven-controlled crystal oscillators before. They come as good as 0.01 ppm accurate (!!!) and I can't even type the percentage without wearing out the "0" key on my keyboard (If I count the zeroes right on my calculator, it's 1% divided by 10-million!). This top of the line OCTXCO lists around $100-200. See here: http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=CW634-ND So, even with a 100-minute playback and a 50-cent crystal, there should be no problem at all. cheers, Nick. -- DeVerm ------------------------------------------------------------------------ DeVerm's Profile: http://forums.slimdevices.com/member.php?userid=18104 View this thread: http://forums.slimdevices.com/showthread.php?t=52817 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
