: These include the duration of "bursts" (vowel-like notes), the interval between those notes, and the overall intensity/volume decay of the laughter.

Research into human laughter identifies several distinct acoustic "features" used for analysis or AI classification: Fundamental Frequency (

) : The pitch of the laugh, which varies significantly between voluntary and involuntary instances.

: On platforms like TikTok , creators can use live effects such as the laugh icon to trigger interactive sounds for their audience during a stream.