[water running] [handle squeaks] [silence] Now listen to it with a completely different sound design. [water running] [handle squeaks] [water drains] In the first version, all sound cuts out.

Ranging from a threatening hiss to a blood-curdling scream, the sound of the Aztec death whistle is as creepy as the ...

“We show that skull whistle sounds are predominantly perceived as aversive and scary and as having a hybrid natural-artificial origin,” wrote the researchers, who hail from the University Of Zuric ...