If I try to purr on a diaphragm I can make a sound, but it won’t be a turkey call. On the other hand, with my slate call I can purr, yelp, cutt, cluck, tree cackle, and even kee-kee run without much ...

In the movie *Jurassic Park*, when a giant dinosaur approaches, audiences naturally recall a low, heavy sound as if the ground is trembling. This is because humans intuitively anticipate sounds by ...