"Steven Sullivan" wrote in message
...

Benajmin and Gannon's jitter threshold listening tests reported in a 1998
AES preprint
indicated that the threshold for audible jitter with actual music
(as opposed to sine waves and single instrumental tones) was on the order
of 100 ns. Are you saying that CD players five years ago
generally had at least this much jitter, or is there some other audible
factor that they have improved since then?

I did a quick calculation and while 100 *nano* seconds may be a little
high (for audibility) it is in the ballpark. But readily available crystal
oscillators have jitter well below 100 *pico*seconds - in other words
three orders of magnitude better which translates to 60 dB lower
noise. In other words, jitter should have no effect unless the design
is *really* incompetent. This buttresses the point Dick Pierce
has made many times, that the audio industry is decades behind the
rest of the electronic industry.

- Gary Rosen