In contrast to electronic sirens the Quadrasonic™ sirens emit sinusoidal soundwaves which have gentler rise and fall times allowing the eardrum muscles have more time to adapt to the increase in volume levels. The sinusoidal sound waves are less likely to cause hearing damage. The stereocilia are activated at a slower rate and are less stressed by the type of sound wave used in Quadrasonic Siren Systems.
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Registered office:
DIRECTIONAL SIRENS Ltd 21 Wyndcote Rd Merseyside L18 2EB |
phone +44 (0)151 234 9887
mobile +44 (0)796 426 9350 |