Not having a microphone, I can't speak to that (no pun intended). My accent is all over the place anyway... the simple rule of the Irish is to just speak faster and swear more than everyone else and you'll fit right in (at least for Dublinesque). I wonder if MS put in a child-friendly filter to block swearing... which would definitely take all the fun out of it.
I remember as a child picking up the cassette recorder from mum and da's closet floor and recording lots of colourful language on it... as kids will... may have been grounded for it once or twice too... I mean, what
else were those contraptions meant for? (That, and sticking them in the microwave to see what happens... and to conveniently hide the evidence...)
Incidentally, not much happens to a cassette tape in the microwave. I was most disappointed. So I moved on to batteries in a fire... which is similarly disappointing... they just sizzle... I had a very disappointing childhood...