YouTube is a good source of recorded human speech – as is the Internet, period. Think about why you like certain laughs. Maybe you like a laugh because it’s deep and hearty, or because hearing it makes you yourself laugh.
Be aware that if you outright mimic a laugh that’s famous from television or a movie, people may notice. Decide whether or not you want this.
If your laugh is too loud, try to laugh more quietly. If your laugh is too giggly—high-pitched and quick—you might try to laugh more slowly, in a deeper pitch.
If you have a specific new laugh in mind, consider playing the recording of your original laugh at the same time as a recording of the laugh you’d like to imitate. This way, you may be able to better hear the subtle differences between the two.
If you catch yourself slipping back into the old laugh, don’t get frustrated. Your old laugh was a habit that evolved naturally through years of jovial interactions with people, and it can be a very hard impulse to break. The important thing is that you’re conscious of the way that you’re laughing. If you’re conscious of how you sound, it may be easier to actively shift that sound.
