* Tone of voice: A happy person might speak with a higher pitch, more inflection, and a faster pace.
* Word choice: Happy people might use more positive words, exclamations, and playful language.
* Content: Happy people might talk about positive experiences, things they are grateful for, or their hopes and dreams.
However, "happy" is not a specific type of speech like "formal" or "informal."
It's important to remember that happiness is complex and can be expressed in many ways.