There is a paper around somewhere (I searched but couldn't find it again), that explains how jitter can be introduced into a S/PDIF bitstream by limiting the frequency response of the pulse detection circuity at the front end of the S/PDIF receiver chain. From what I recall, the cause was the biphase mark encoding process and how the clock is recovered given that a '1' effectively is twice the frequency of a '0'. The paper suggested that a simple RC circuit introduced into the S/PDIF receiver circuitry could be used to synthesise jitter.
I keep meaning to try it. At the risk of going down memory lane, I recall in my early days at the BBC a demonstration box that was effectively an A to D to A that allowed you to select the the number of bits in a sample to hear what it sounded like. You could listen to 16bit audio, and while the music was playing select different sample sizes. The most telling sound was the decay of a single note on the piano. It was quite possible to tell the difference between 15 and 16 bits. It would be interesting to do the same for jitter, just to see what it 'sounds like' -- Andy8421 ------------------------------------------------------------------------ Andy8421's Profile: http://forums.slimdevices.com/member.php?userid=16846 View this thread: http://forums.slimdevices.com/showthread.php?t=78790 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
