[ The above text is a transcript of this podcast. “Yeah, I guess some fathers and sons bond over football, but my dad and I, I guess we bonded over differential equations and writing this paper.”
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The match between the simulated sounds and the real deal is encouraging, and the Thodes plan to keep up their collaboration to refine their model. Download whale royalty-free sound effects to use in your next project. Thode vocalized the results at the meeting of the Acoustical Society in Salt Lake City. That stickiness comes courtesy of the mucus. But Thode the younger says the bursae have to be somewhat sticky for the clapping together and snapping apart to produce a noise with the correct loudness and pitch. And the reverberation results from the vibrations that linger when the tissues pull apart. The initial thud comes from when those dorsal bursae collide. When the Thodes compared the simulated sounds produced by their model to a recording of actual dolphins, they found that the model mimicked both the loud thump and extended ring that are part of the natural click. So Thode enlisted his father Lester, a retired nuclear physicist from Los Alamos National Lab, to help him fit the model to a dolphin’s nasal anatomy. This model successfully replicated the essential characteristics of the system, like the frequency of vocal cord vibration. While looking through the literature, oceanographer Aaron Thode stumbled across a model that represented vocal cords as masses connected by springs-which store and release energy-and dampers, which dissipate that energy. And they found that the secret ingredient is snot. Now, a team of researchers has created a simplified model that can reproduce this characteristic dolphin chatter. In this nasal region are liplike flaps of tissue called dorsal bursae that vibrate and collide to produce dolphin talk. The high-frequency clicks, in particular, help Flipper and his kind locate and track fish dinners.ĭolphins make these sounds by forcing air through a nasal passage just beneath the blowhole. They use their clicks, chirps and whistles to navigate, communicate and to catch their next meal. Real dolphins, like these bottlenoses, sound more like this. That’s a made-for-TV giggle that some say is actually the doctored call of a bird: the Australian kookaburra. Dolphins do not actually sound like this. Because a new study shows that a little bit of mucus helps these marine mammals generate the rapid-fire stream of clicks they emit and use for echolocation.įirst off, let’s just get this out of the way.
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Sometimes a snout full of snot can be just what the doctor ordered.
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