马的嘶鸣声在自然界中独一无二

Zoology A horse’s whinny is unlike any other sound in nature James Woodford WHEN a horse whinnies, it is making two sounds simultaneously as no other animal can: a low-pitched noise made in a similar way to a cow’s moo and a high-pitched whistle made in its throat. It has long been known that a horse’s whinny contains both a low-frequency sound, around 200 hertz, and a high-frequency sound, above 1000 hertz – a phenomenon known as biphonation. The low-frequency component is easily explained by vibrations in the horse’s laryngeal vocal folds, similar to human speech or singing. But the high-frequency sound is unusual for such a large animal, and how it is produced has been a mystery. …