When I'm excited, I say about 200 words per minute
. The recommended rate for persuasive speech is in the range of 140-160wpm, although studies differ on whether faster speech is more persuasive or if slower speech is. (Apparently, it depends on the context and whether people are inclined to agree with you...) It's good to be flexible, though. I'm getting used to speaking slower. In the videos I've been making, I experiment with a lower voice, a slower pace, a more relaxed approach. When I record, I imagine the people I know who speak at the rate I want to use. I "hear" them say things, and then I mimic that.
I've been talking to a lot of people because of Google Helpouts and other online conversations. I help them with topics that they're not familiar. Sometimes there are network or technical issues. I've been learning to slow down and to check often for understanding.
I think the biggest difference came from software feedback, though. I did the voiceovers for a series of videos. My natural rate was too fast, even when I tried reading at a slower rate. I adjusted the tempo in Audacity and found that I still sounded comfortable at 90% of my usual speed. The sound quality wasn't amazing, but it was interesting to listen to myself at a slower rate and still recognize that as me.
It's funny how there are all sorts of mental hacks that can help me play with this. I find it fascinating when a person's normal pace is faster than the average pace I've been nudging myself towards. I'm not used to being the slower conversationalist, but it's kinda cool.
I still like speed. I do some bandwidth-negotiation in conversations. I ramp up if other people look like they can take it. But it's nice to know that I don't have to rule out podcasting or things like that. I can slow down when it counts, so that what I'm saying sounds easier to try, seems less intimidating. It's the auditory version of sketchnoting, I guess. Sketchnotes help me make complex topics, so it makes sense to do the same when speaking.
Hmm, maybe I can transcribe my recent videos and recalculate my words per minute...