Richard Bandler, co-creator of NLP, speaks of tonality in a manner very similar to this:
He points at his nose while speaking in a very nasal tonality and says, “This is your nose.”
Then he points at his throat, shifts his tonality downwards and says, “this is your throat.”
He continues by pointing to his chest, and lowering his tonality further says, “This is your chest.”
Finally he lowers his tonality still further and points to his stomach and says “this is your stomach.”
He goes on to suggest that more you learn to speak from your belly and not from your nose, the more money you’ll earn, the more people you’ll influence and the more successful you’ll be.