Thanks, RIck, Baz and Jon. After much Googling and Youtube watching here, for your delight and critique, is what I have learned and what I do for the production process.
1. Record in a top floor bedroom with the thick curtains closed.
2. Use a Blue Yeti X condenser microphone connected to my Lenovo Yoga laptop, via Logitech G Hub with ‘warm vintage’ voice setting. The mic is strongly directional and the laptop fan can only be heard by neighbourhood dogs
3. Whenever I make a mistake I just repeat and then edit it out later
4. Then jump into Audacity and export the file as a mono WAV file set at 44100 Hz
5. Run that through an app called Levelator
6. Import back into Audacity and run it through various effects – RMS Normalize, Noise Gate and Limiter
7. Import snippets of music, written and performed by a talented friend. Use that as fade in background to my Chapter announcement then fade out to narration start.(4-8 seconds). Also fade out 3-5 seconds at Chapter end
8. Ensure there is 0.5-1.0 seconds gap of room noise intro and 1.0-5.0 seconds room noise gap at the end
9. Analyze the whole thing against a brilliant little app called ACX Check, which does what it says on the tin. It checks that the Peak Level, the RMS Level and the Noise Floor will satisfy the stringent requirements for Amazon Audible.
10. Save as MP3 Chapter file
Glad you asked?