P Floding;172047 Wrote: > OK, I misread your earlier post. > Then we both agree that Fig 4 at > http://theaudiocritic.com/blog/index.php?op=ViewArticle&articleId=20&blogId=1 > actually indicated a constant level signal related distortion > mechanism? I.e a fixed size discontinuity in the transfer curve. >
On closer examination it's a bit more complicated. Model the measured response as A = A0 + N(A0)^n, where N is some constant. The case considered above was n=0. However for any n this will look linear on that plot, with a slope that depends on n (and the linear extrapolation I used above will be valid). Looking at the plot for 20Hz and 1kHz, n=.5 up to maybe 5W, and then n=1 from then on. For 20 kHz n=0 all the way up to 50W, and then 1 from then on. So in other words for 20Hz and 1kHz the measured signal in the low power regime matches well with A = A0 + N A0^.5 - the distortion grows like the square root of the amplitude - it's NOT constant. Any idea what that means? -- opaqueice ------------------------------------------------------------------------ opaqueice's Profile: http://forums.slimdevices.com/member.php?userid=4234 View this thread: http://forums.slimdevices.com/showthread.php?t=31843 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
