Based on discussions in the Complete Classical Music workflow, I present a command-line script to calculate individual track values of integrated LUFS, LRA and true peak using ebur128. In addition it will calculate the album integrated, LRA and TP and present all information in an html table format as well as on the screen.
Prerequisites: ebumeter, sox
Usage example: album-ebur128 *.flac
I recommend copying to /usr/local/bin or other appropriate directory included in $PATH. The loudness_analysis.html file is created wherever the script is run.
Thanks to @x42 for the tip about piping concatenated files to ebur128.
Any feedback for improving the likely inefficient scripting is very welcome as are any feature requests. A good use case for this script would be for comparing reference albums in order to achieve similar loudness values in an Ardour mastering session. Perhaps, also, a final check post-export.