Sonic weapon

A device that uses intense or directed sound to injure, disorient, deter, or communicate with people. Its effects depend on sound intensity, frequency, exposure time, and distance.

Sound pressure level: A logarithmic measure of the effective pressure variation in a sound wave, usually expressed in decibels. It quantifies the acoustic intensity associated with hearing damage and discomfort.
Long Range Acoustic Device: A directional loudspeaker system developed to project loud, intelligible sound over long distances. It is a prominent example of a device used for communication and acoustic deterrence.
Directed-energy weapon: A weapon that directs concentrated energy, such as electromagnetic radiation or particles, toward a target. Sonic weapons are one acoustic case within the broader family of directed-energy systems.
Noise-induced hearing loss: Permanent or temporary hearing impairment caused by exposure to excessive sound. It is a documented health risk of sufficiently loud or prolonged acoustic exposure.
Acoustic radiation pressure: A time-averaged force exerted by sound waves on objects and boundaries. At extreme intensities, sound can exert physical force as well as stimulate hearing.
Acoustic hailing device: A loudspeaker system designed to transmit intelligible voice messages across long distances or noisy environments. This broader device category includes systems used to communicate warnings before force is considered.
Electroshock weapon: A weapon that incapacitates or deters by delivering an electric shock. It affects the body electrically rather than through sound waves.
Tinnitus: The perception of sound, such as ringing, without an external acoustic source. Intense noise exposure can trigger tinnitus, sometimes alongside hearing loss.
Auditory masking: The reduction in audibility of one sound caused by another sound. Loud acoustic signals can obscure speech and other sounds without physically injuring listeners.
Mosquito alarm: A device that emits a high-frequency tone intended to deter young people from loitering. It illustrates sound-based deterrence that relies on age-related differences in hearing.

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