ezkcdude;183868 Wrote: > In the "Now, why didn't I think of it?" department (well, actually, I > did have such an idea once), here's a discussion from Pete Aczel (aka > The Audio Critic) of an A/B technique using software to record and > normalize the differences induced by changing components in a system > (*Audio DiffMaker*, sort of a play on the Unix diff command, I > suppose): > > http://theaudiocritic.com/blog/index.php?op=ViewArticle&articleId=35&blogId=1 Two comments:
1. This sounds very similar to the technique used by Hafler many years ago to demonstrate that their amplifiers introduced no audible distortion. In that, the original signal and the one passed through their amp were level-matched and subtracted from one another to yield a nominally "null" difference signal. 2. The residual difference after subtraction may well be audible in the context that it is not swamped by the presence of the much larger music signal, but be inaudible when the music signal is included. In other words, this method could produce a positive where ABX gives a negative. For determining whether there is an audible difference *in the context of listening to music*, ABX remains the more accurate measure. -- cliveb Performers -> dozens of mixers and effects -> clipped/hypercompressed mastering -> you think a few extra ps of jitter matters? ------------------------------------------------------------------------ cliveb's Profile: http://forums.slimdevices.com/member.php?userid=348 View this thread: http://forums.slimdevices.com/showthread.php?t=33127 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
