I pushed your commercial through the ACX AudioBook mastering suite…
https://forum.audacityteam.org/t/audiobook-mastering-version-4/45908/1
… and it came out the other end slightly harsh, so I applied DeEsser at the default settings (attached clip).
I’m sure the golden ears will have other suggestions. I’d be submitting for paid work.
The mastering suite applies a rumble filter > Set RMS (Loudness) > Set blue wave peaks. That’s all it does. No fancy compression or other tricks.
Koz
