the author refers to another article about some strange experiences...In his Article in the November 1997 issue of HiFi-New & record Review (HFNRR) Ben Duncan notes that for accurate reproduction of 16-Bit resolution, the amount of jitter presented to the DAC MUST BE below 100ps (pico-seconds). For 20-Bit resolution by the way, it must be below 6ps. Thus any CD-Player (or transport/DAC Combo) that has jiiter-level higher than 100ps is incapable of extracting all the information , potentially presented by the CD replayed.
I cannot guarantee for the technical correctness of the content, but he put a large amout of work into dissecting and analyzing this 16 bit deviceMost of the Jitter is located at frequencies of around 500-1000 Hz. Let's check out the experience Paul had when he accidentally introduced notable amounts of jitter to his CD-Player.
I shall quote: "Another funny thing (that will drive the audiophiles crazy) was that by accident, I threw about 500 ps jitter into the clock (the jitter freq. was about 250 Hz). I listened to the sound afterwards and thought just how nice warm and smooth it sounded, figuring this was it for best sound." ..." Once I fixed that up, the sound turned cold and quite clinical. The detail was greater, but it lacked the musicality the jitter condition had!"
at least food for thought about resolution madness... and a clear vote for clock over bit depth.
Anyone got an idea of 6 picoseconds ? that's a nanosecond divided by 166 - and that precision is for 20 bit only
cheers, Tom
<font size=-1>[ This Message was edited by: astroman on 2004-10-17 19:05 ]</font>
