Make a Simple Machine Gun Sound Effect Generator Circuit | Homemade Circuit Projects
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Three Siren Sound Generator Circuit Using UM3561
The psychoacoustic effect of infrasonic, sonic and ultrasonic frequencies within non-lethal military warfare techniques. | by Littl3field | Littl3field
How to Build an Infrasound Generator Circuit - Creating a Synthetic Paranormal Environment - Bright Hub Engineering
build an infrasound generator circuit for ghost effects under Repository- circuits -35079- : Next.gr
ES-130
SONIC, INFRASONIC, AND ULTRASONIC FREQUENCIES: The Utilisation of Waveforms as Weapons, Apparatus for Psychological Manipulation