cliveb;421451 Wrote: > > Secondly, the 89dB reference level is derived from an SMPTE standard > which states that pink noise at -20dB RMS should be played at 83dB SPL. > (Replaygain started out using 83dB as its target loudness, but that's > been adjusted up to 89dB for reasons that are not entirely clear to me. > Most software that performs Replaygain calculations will let you set the > reference level to whatever you like: 89dB just seems to have become > some sort of de-facto standard). So in other words, if you use an 89dB > reference level for Replaygain, you'll get the same perceived loudness > as you'd get listening to pink noise at -14dB RMS.
The reference level is not used at all in ReplayGain calculation, it is just an arbitrary offset that some people like to add the level adjustments. The only thing that matters is the filter, which I believe is still matching 83dB SPL ear sensitivity (the casual comment in HA forum that it was changed to 89 due to popular demand indicates to me that just the number was changed, not the algorithm.) -- tot Teemu ------------------------------------------------------------------------ tot's Profile: http://forums.slimdevices.com/member.php?userid=11843 View this thread: http://forums.slimdevices.com/showthread.php?t=57872 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
