在网上找到这一段：
Jitter can be measured with sophisticated oscilloscopes and then the value computed in picoseconds (ps). The higher the ps value, the worse the jitter caused by that particular medium. Some examples of measurable jitter from different digital interconnects used in Hi-Fi : Optical (plastic) cable – 2944 ps, Electrical (co-axial) cable – 1434 ps. * taken from Monarchy Audio’s site * As you can see, the difference between two standards of digital transmission and the medium used can cause as much as a 50% difference in jitter.
所以大侠们普片认为，同轴比AT&T石英光纤好，AT&T石英光纤比TosLink好。我还没机会试。
