Measure Loudness in LUFS

There is an update. Because it is now Nyquist plugin, it is posted on a different forum: click

For the best performance, I recommend to continue to use the macro version.
If you want to study ITU-R BS.1770-4 algorithm translated to Nyquist language or you want to implement lufs measurement into your own Nyquist plugin, see the code of the my plugin.