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Sound Beams. The Long Range Acoustic Device (LRAD) is a sonic weapon developed by LRAD Corporation to send messages, and harmful, pain inducing tones over longer distances than traditional loudspeakers . The LRAD is said to produce roughly around 162 decibels at a constant rate.

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Sound beams

Sound Beams

The Long Range Acoustic Device (LRAD) is a sonic weapon developed by LRAD Corporation to send messages, and harmful, pain inducing tones over longer distances than traditional loudspeakers.

The LRAD is said to produce roughly around 162 decibels at a constant rate.


The Threshold of pain for the average person is 130 decibels

Normal Conversation - 60 dB

Alarm Clock - 80 dB

Lawn Mower - 90 dB

Jet Engine – 150 dB

LRAD Device – 162 dB


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