Levels & Pop / click diagnosis?

Special Interest Groups Audiobook Production
7

Yes that’s dynamic range compression. A good free multi-band compressor plugin which works in Audacity is Gmulti …

'GMulit' Multi-band compressor with '4solobo' settings.png
'GMulit' Multi-band compressor with '4solobo' settings.png604×505 21.3 KB

4solobo.xml (1.52 KB)
You should get Paul-L’s DeClicker plugin from here.