Whom we laugh with affects how we laugh

@inproceedings{Campbell2007WhomWL,
  title={Whom we laugh with affects how we laugh},
  author={N. Campbell},
  year={2007}
}
This paper describes work that shows how the acoustic features of laughter in Japanese speech vary according to conversational partner, reflecting the social status of laughter, and confirming that even such a simple sound is affected by non-linguistic factors such as social or intercultural relationships. Neural networks were successfully trained to identify the nature of the interlocutor from principal components of the acoustic and prosodic features of the laughing speech. 
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