Boundary tone

Change in pitch at the end of an utterance

The term boundary tone refers to a rise or fall in pitch that occurs in speech at the end of a sentence or other utterance, or, if a sentence is divided into two or more intonational phrases, at the end of each intonational phrase. It can also refer to a low or high intonational tone at the beginning of an utterance or intonational phrase.

This keyword could refer to multiple things. Here are some suggestions: