The Feraliminal Lycanthropizer is a fictional machine invented by American writer David Woodard, whose 1990 pamphlet of the same title speculates on its history and purpose. The brief, anonymously published work describes a vibration referred to as thanato-auric waves, which the machine electrically generates by combining three infrasonic sine waves (3 Hz, 9 Hz and 0.56 Hz) with concomitant tape loops of unspecified spoken text (two beyond the threshold of decipherability, and two beneath the threshold).
The premise is that a mind-altering technology has for decades, at the behest of American intelligence during the Cold War, been withheld from scrutiny. Dispensing sensitive information in the interest of enhancing civilian life, the author shares his own notes as well as those left by earlier researchers.
The name Feraliminal Lycanthropizer is composed of two portmanteau words. The first, Feraliminal, is a combination of the Latin ferus (wild animal) and limen (threshold), while the second, Lycanthropizer, combines the Ancient Greek root lycanthrope with a generic suffix, -izer, conferring agency. Together the words suggest something hidden that triggers wild or aggressive conduct