Replay Gain Advanced Questions

[Sugar Magnolia]

1 What is the difference between Gain Calculation "EBU R128" and "ReplayGain"?

2 What is the "LUFS Target Volume" and how to various values affect this or playback?

3 What does the "Disable Clip-Prevention" tick do? Why would you ever want to disable clip prevention?

Thanks, Pete

[garym]

Re: Replay Gain Advanced Questions

1 What is the difference between Gain Calculation "EBU R128" and "ReplayGain"?

2 What is the "LUFS Target Volume" and how to various values affect this or playback?

3 What does the "Disable Clip-Prevention" tick do? Why would you ever want to disable clip prevention?

Thanks, Pete

1. EBU R128 is a "more modern" volume equlizer approach that essentially replaces ReplayGain. You use one or the other. This said, the tag info written is the same, so any player that uses ReplayGain tags will use the info whether it was created from the EBU R128 method or the ReplayGain method.

2. the standard for EBU 128 is "-23". However, if one wants their EBU R128 method files to be about the same loudness as their older ReplayGain method files, one would use -18 instead. I use -18 as I have a mix of older RG method files and now I use EBU R128. dbpa defaults to -18 for this reason. And foobar2000 ReplayGain tool now uses EBU R128 set at "-18" as well.
3. Default is to use "clip prevention" so that the volume normalize aspect will know to turn down volume where needed to stop the playback from clipping. ticking the box disables this. If you don't understand why you might want to disable, the best answer is to NOT tick the box. It is probably pretty rare that the clip prevention even kicks in...... So mostly this option is irrelevant for most tracks played by most people.

[Sugar Magnolia]

Re: Replay Gain Advanced Questions

Very cool, thanks.

Is -18 more (louder playback?) or less gain than -23 (quieter playback?)?

[garym]

Re: Replay Gain Advanced Questions

Very cool, thanks.

Is -18 more (louder playback?) or less gain than -23 (quieter playback?)?

-23 is QUIETER playback than -18.