Optional breathingaudible breath, inhale, exhale
Optional cryingOptional laughinglaugh, chuckle, giggle — and laugh-speak delivery
Optional mouthtsk, tongue-click, lip-smack
Optional reflexcough, clearing the throat, yawn
Optional sighingOptional vocalizingnon-lexical voiced sounds — humming a tune, sing-song or sung delivery
Non-verbal vocalizations the TTS may produce (sounds that aren't words).
A sparse opt-out: omitted keys default to ON, and a category set to
falseis never advertised to the LLM —{ laughing: false }removes laughter and nothing else. Together the keys cover every sound the providers offer.