Ever wondered what true terror sounds like? The Aztec Death Whistle is an ancient instrument designed to send chills down ...

Swiss and Norwegian neuroscientists have discovered that the ancient Aztec death whistle -- often credited with emitting the scariest sound on earth -- still terrifies people today due to a primal ...

Aztec death whistle may have been used to prepare sacrifice victims for journey to the afterlife because of their ominous, scream-like sound ...

Why Aztec “death whistles” sound like human screams The basic mechanism relies on the Venturi effect, producing a unique rough and piercing sound.

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 ...

Aztec "Death Whistle" That Produced Horrifying Shriek Possibly Used During Human Sacrifices Imagine this being the last thing you ever hear.

Brain scans of modern listeners suggest that Aztec whistles sound like human screams, which may have prepared sacrifice victims for their journey to the underworld.

Aztec death whistle may have been used to prepare sacrifice victims for journey to the afterlife because of their ominous, scream-like sound ...

Aztec death whistle may have been used to prepare sacrifice victims for journey to the afterlife because of their ominous, scream-like sound ...

Aztec death whistle may have been used to prepare sacrifice victims for journey to the afterlife because of their ominous, scream-like sound ...

Aztec death whistle may have been used to prepare sacrifice victims for journey to the afterlife because of their ominous, scream-like sound ...

Aztec death whistle may have been used to prepare sacrifice victims for journey to the afterlife because of their ominous, scream-like sound ...