Alcune utilizzano gli ultrasuoni e altre gli infrasuoni!
Il range di frequenza udibile per l’essere umano è dai 20 Hz ai 20 Khz, sotto ai 20 Hz sono infrasuoni e sopra ai 20 KHz sono ultrasuoni.
Queste armi generano un fascio di onde sonore concentrate ad elevata potenza e producono effetti psicologici e fisici.
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