2013/4/5 Thomas Vecchione <seablaede@xxxxxxxxx>: > So here is the thing, it makes a large difference what the source is as to > how obvious it would be. Case in point, I found the v6 difficult on the > files in the thread, but I toss in one of my recordings(Using lame with v4 > and v6 as above) from a live concert and holy crap is there a difference, > obvious right from the get go in the hiss in the track on v6. v4 on the > other hand was very difficult to tell on that track to where I don't think I > could hear a difference. But that only makes me wish I had some decent > recording of full orchestral classical at my workstation to listen to as > that is my goto material for a source. Or irish folk music, which can do a > decent job as well causing problems of more than one sort:) > > Some things to keep in mind, I am listening over studio monitors, not > headphones, but still much better than the average listening environment. > It would likely be even more obvious over headphones to tell the truth. > Second it always makes a difference in the second generation encoding, which > is why I tend to use FLAC for archival and master purposes, and use OGG or > otherwise for listening, so that I never risk a second generation > compression, which becomes more obvious. > > Via abx, there wasn't ever a question with v8 really. v6 as I mentioned on > the sources mentioned above were much harder, but if I tossed in my own > acoustic/folk recording it became very blatant. Again source makes all the > difference. v4 I couldn't tell over speakers, but I also don't have most of > my music collection here either, so I really should come back to it with > some decent classical and irish folk tracks and see what happens. > > Seablade Right, as I said in a previous post ABX test is "statistics pornography", allow me this metaphor :-) It relies on weak assumptions (thomas just explained) and hence a bunch of variables which variance can't be somewhat controlled (statistically speaking) to isolate the dependent variable, ie the real ability to discriminate (golden ears)... I would say that it's good to state that with higher bitrates there's actually no difference, with low bitrates outcomes may change a lot. Nevertheless it's very educational in terms of understanding what we perceive from our beliefs. /r _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
