How to get ACX specs for audiobook

You can leave Remove DC checked. If it’s not needed, it doesn’t do anything.

Have you actually tried that process?

We published a slightly different mastering suite.

https://forum.audacityteam.org/t/audiobook-mastering-version-4/45908/1

It is a very New User mistake to read the whole book and only then figure out if it passes. The up side is you’ll be much more experienced when you read it the second time.

I’m trying to track that back. There is a “known ACX Process” that starts with Noise Reduction and nobody seems to know where the original came from.

I got your clip to pass using the existing Mastering Suite. First three measurements and sentence 2/3 down.
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Koz