Well, my observations so far are from many years onsite training, a couple years of research trying things with my online course on Udemy, listening to other courses, and other research.
First, most teaching is too slow. Most political speeches are too fast. But most teaching is too slow. You can’t teach at the speed you’d like, assuming listeners will take many seconds to digest your wonderful thoughts. You have to keep them engaged. I’d say about 140 words per minute. And with as much passion, and changes in pitch and tempo, as you can. A two second pause at the end of a really key point is about the maximum.
Get a good mic. I have the Scarlett Studio CM25 MkII, into Scarlett Studio box, USB into the computer. Disconnect the Internet, close all programs, deactivate all virus checking, run nothing but Audacity. Pop filter 4 inches from mic, speak 3 inches from pop filter. Adjust gain just short of overdrive, 75% on my set up.
However, for me, I cannot achieve 140 wpm and do a good job reading the script So I record the best job I can, then speed up tempo with Audacity by 16%. Do NOT use high quality stretching, as it distorts narration.
Then I lower pitch 5%, because my voice is too high.
Then I make stereo, and apply Ozone Imager, 33 and 3.3, since it makes narration so much more interesting.
Then RMS normalize -18, and soft limit -3 db hold 10 ms.
I do not do noise reduction, as I don’t like what else is lost.
It’s working. Much better than just me. Hope this all makes sense.
I’m still really interested in your expert thoughts on improvements on EQ, presence, or anything else on where I am now with that excerpt though.