IMO the main problem is excessive sibilance: the “s” sounds are too loud.
There is a free plugin for Audacity which will fix the problem: a de-esser.
Step #1. RMS Normalize the audio to -19dB.
Step #2. Apply these de-esser pluging settings …

IMO the main problem is excessive sibilance: the “s” sounds are too loud.
There is a free plugin for Audacity which will fix the problem: a de-esser.
Step #1. RMS Normalize the audio to -19dB.
Step #2. Apply these de-esser pluging settings …
