This is probably a much more likely explanation; we'll see when we get bodycam footage or anything else if there's a better recording of what was being played.

This is probably a much more likely explanation; we'll see when we get bodycam footage or anything else if there's a better recording of what was being played. But for whatever it's worth, most TTS engines are modeled around well known voiceover people. It's still possible that since the engine didn't reproduce a 1:1 copy and there's no discernable (at least to me) artifacts in the one copy of sound footage we have, that was the real person, and she just announced it slightly differently.