The Aztec death whistle is a mesoamerican instrument designed to imitate a human scream, and was often used during battle or at sacrificial ceremonies. Researchers from the University of Zurich ...

A unique whistle has been discovered during excavations of Aztec sites. The decoration resembles a skull. When you blow on ...

The whistle’s unique design features two opposing sound chambers that generate physical air turbulence, creating its signature bone-chilling screech. When the research team played recordings to ...

What was particularly interesting was that while participants perceived the whistle to be of man-made origin, they also perceived it to be of natural origin, like a human scream. 'We found that ...