servies wrote: > Robin Bowes;238725 Wrote: >> servies wrote: >>> Robin Bowes;238680 Wrote: >>>> I don't really understand what you're saying here, but it sounds >> like >>>> the tired, old "bits is bits" argument. >>>> >>>> It's not as simple as that, as has been discussed many times here on >>>> this forum, and on countless other forums/lists. >>>> >>>> R. >>> Yeah yeah I know, quantum mechanics etc. etc... >> >> No, nothing as esoteric as that. >> >> Most DACs must recover the timing information from the bitstream. If >> that isn't done correctly it affects the audio. >> I'll leave you research the issue more. >> R. > Then I'll leave it up to you to find the differences between the > following bitstreams: > 11001100110011001100110011001100110011001100110011 > and > 11001100110011001100110011001100110011001100110011
Those are not bitstreams, they are strings of the digits '1' and '0'. Here are some links that might help you understand things better: http://en.wikipedia.org/wiki/Spdif Quote: "S/PDIF is used to transmit digital signals of a number of formats, the most common being the 48 kHz sample rate format used in DAT, and the 44.1 kHz format used in CD audio. In order to support both systems, as well as others that might be needed, the format has no defined data rate. Instead the data is sent using Biphase mark code, which has either one or two transitions for every bit, allowing the original word clock to be extracted from the signal itself." http://en.wikipedia.org/wiki/Biphase_mark_code http://www.maxim-ic.com/appnotes.cfm/appnote_number/1916/CMP/WP-34 Quote: "The SONET standard states that "Jitter is defined as the short-term variations of a digital signal's significant instants from their ideal positions in time. Significant instants could be (for example) the optimum sampling instants." The Fiber Channel standard simply defines jitter as "The deviation from the ideal timing of an event." R. _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
