LUFS
But the _peak_ levels are set by the channel characteristics, the _average_
levels are set by program directors.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
and the channel characteristics are set by the FCC (in the US)
yep, any modern FM radio station is hitting 100% deviation regularly... like every syllable.
They can't legally go over and nobody goes under for any significant length of time.
the variation between loud stations and not so loud stations is simply how regularly and how often they hit that 100%.
It is interesting to hook an oscilloscope directly to the discriminator of a receiver (before the demphasis) and see how it is smashed against the legal limit. Every station hits the limit, the variation in perceived loudness corresponds more to the DENSITY of the modulation rather than the actual upper limit. They all have the same upper limit set by the FCC.
m
|