Investigative Report: Radio and U.S. Military Psypos

Clandestine radio is an extremely effective form of propaganda that oftentimes supports military operations. Along with other tactics, including the dropping of leaflets and the use of loudspeakers, radio can "win the hearts and minds" of the target audience and has, in the past, won compliance from hostile leaders. Although clandestine radio broadcasts are generally associated with intelligence agencies and guerilla groups, the U.S. Army has long used it for PSYPOS - Psychological Operations.

Combat Loudspeakers: Weapon of the Battlefield Evangelists

The purpose of this work is to provide historical evidence that the innovative use of tactical loudspeakers has been, and will continue to be, a viable and an essential "weapon" in the arsenal of U.S. military forces. Although loudspeaker teams have been employed for all peacekeeping operations in the past 50 years,including Somalia, Haiti and Bosnia/Kosovo, the focus of this work is their use on the battlefield against an enemy soldier.

The Wandering Soul PsyOp tape of Vienam

Helicopters were used to broadcast Vietnamese voices pretending to be from beyond the grave. They called on their "descendents" in the Vietcong to defect, to cease fighting. This campaign played the sounds and messages all night in order to spook the superstitious enemy. Despite eventually realizing that they were hearing a recording beamed from a helicopter, the enemy gunners could not help but fear that their souls would some day end up moaning and wailing in a similar fashion after death.

The Long Range Acoustic Device

The Long Range Acoustic Device™ (LRAD®) is a highly directional acoustic array that is designed for long-range communication and unmistakable warning. The LRAD device can issue a verbal warning and has the capability of following up with a deterrent tone to influence behavior or determine intent.

Have you heard 'the Hum'?

For decades, hundreds of people worldwide have been plagued by an elusive buzzing noise known as "the Hum". Some have blamed gas pipes or power lines, others think their ears are faulty. A few even think sinister forces could be at work.

Sound mirrors

A forerunner of radar, acoustic mirrors were built on the south and northeast coasts of England between about 1916 and the 1930s. The ‘listening ears’ were intended to provide early warning of incoming enemy aircraft.

1982 Datsun Voice Warning Box Used Tiny Phonograph Record, Just Like Moon Base Robots

That's when I found an intriguing box labeled "Audible Warning - Don't Drop" under the dash of a 1982 Datsun 810 Maxima.

That Buzzing Sound

The mystery of tinnitus.

Playing golf can 'damage hearing'

Keen golfers are being warned by doctors that they could be risking their hearing for their sport.

Activists Preparing Against Use of ‘Brown Note’ at Dem Convention

Also called “Brown Note,” it is believed to be an infrasound frequency that debilitates a person by making them defecate involuntarily.

Mosquito Teenager Repellent

The device, called the Mosquito ("It's small and annoying," Mr. Stapleton said), emits a high-frequency pulsing sound that, he says, can be heard by most people younger than 20 and almost no one older than 30. The sound is designed to so irritate young people that after several minutes, they cannot stand it and go away.

Simon Crab "A Short History of Sound Weapons Pt2: Infrasound"

Infrasound is low frequency audio beneath the human range of hearing. Infrasound constantly surrounds us, generated naturally; wind, waves, earthquakes and by man; building activity, traffic, air conditioners and so-on. Low frequency sound is used by marine mamals to communicate over vast distances and by birds to determine migration patterns.