Is there a term for speech that gradually accelerates?

Question

I was having a conversation with a friend about typing text crammedtogetherlikeso, to emulate a very quick speaking pattern. He mentioned cadence in regards to this, but I was thinking that cadence was more for rhythm in speech. I was wondering if there existed a specific term for a gradual or sudden acceleration or deceleration in speech to convey excitment or apathy or the like. (Primarily while talking, not so much in text; though if there were a word for that it would be good to know as well.)

Answer 1

Speaking too quickly or slowly can be considered examples of fluency flaws. Exceptions would be for emphasis or in certain contexts such as acting or voice production for specific recordings. The circumstances and all environmental factors should be taken into account, too.