Our voice changes depending on who we're talking to and the context, so much so that researchers, and their algorithms, can tell if you're talking to your mother, your boss or your friend. They could even detect the age of the person you're talking to.
"Even when you’re trying to speak normally, when you speak to a young child, your voice changes," says Kleinberger. "The prosody, the musicality that you use in your voice is very different to when you talk to adults."
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