On Tue, 2011-06-14 at 07:22 -0400, Paul Davis wrote: > no, you did make a mistake. your test (to the extent that i understand > it) didn't sync anything. you used two different D/A converters > without a common word clock. even with the same word clock, they would > not necessarily be synced because they may buffer different number of > samples internally in front of the actual D/A circuitry. but this is > sort of irrelevant because you didn't actually sync anything together > at all as far as i could tell. I only used ADAT to sync. I guess when doing this I don't need to use wordclock by BNC. RME card ADAT master --> Behringer ADAT device slave Then I listened to the Behringer analog outs and the RME's analog outs. I set up the Behringer by a switch and the RME card by alsamixer. Any alsamixer setting caused the same result. I didn't set the Behringer to anything other than ADAT slave. > first of all, CD players don't do direct digital audio playback. the > audio you get telling the disc to play an audio CD is different than > you get when reading it as a digital storage medium. secondly, you > appear to have made the cardinal error of trying to do psycho-acoustic > testing without using even blind, let alone double blind testing. this > means that your assessment is meaniningless. if you don't believe me, > try watching (at least the first 2 speakers) of this: Full ACK, this test is just to hear if there are really audible differences I should be aware. Differences that are that audible, that no blind test is needed. There were not such differences, excepted for Totem and this RME to Behringer phasing issue. Without a blind test nobody should doubt that there is a difference between the audio quality of a telephone handset and a good studio monitor ;). > please note that i did not that say that your assessment is *wrong*. > but the way you did it is. your conclusion about sound quality might > be right, but its equally likely to be wrong. Again full ACK! Regards, Ralf _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
