Yes, actually, having worked in speech synthesis for a while I was surprised to find that's how frequent users generally do use it. Although IIRC 450wpm is stil

Yes, actually, having worked in speech synthesis for a while I was surprised to find that's how frequent users generally do use it. Although IIRC 450wpm is still on the high side - I think maybe 2-300wpm was more common, albeit that's still pretty unintelligible to most of us. I imagine maybe he can distinguish higher speech rates using quality headphones than coming from, say, a phone speaker though.