This FREE Sound Effects pack from our friends at BOOM LIBRARY contains sounds from the Aztec death whistles. When raised to the lips and blown, they produce a shrieking sound so human that it can paralyze the listener in their tracks. This package is delivered in 96 kHz, 24-bit giving you the best quality for heavy editing, pitching, and fx processing. Get over 170 SFX in 33 files – that’s almost 700MB of FREE SFX.