Am helping a friend compile a demo collection of tunes recorded on both older analogue and newer digital equipment.
When we listened to these tunes on a MP3 Player there was a significant variation in loudness.
Did a search and found Amplify and Normalize Wiki http://wiki.audacityteam.org/index.php?title=Amplify_and_Normalize
Also did a forum search and found “It’s too bad you’ve converted them all to MP3. Audacity has “Chains” which you could set up to import a track, Normalize, then export as MP3. But then you’ve double-converted to MP3 thus decreasing sound quality.” https://forum.audacityteam.org/t/mp3-cd-recording-levels/28635/3
Question: Does Normalize in Audacity 2.x adjust the mp3 file directly, without decoding and re-encoding (like MP3Gain)?