Said acoustic means are formed as oscillating means oscillating at different frequencies during emission of acoustic signals to said microphone, or as attenuating means.

be equipped with remote acoustic monitoring devices;

Today, Sirena offers a complete range of audible and visual signaling devices.

Energy of said acoustic signals from said loudspeaker is affected by a set of acoustic means of said object, different objects having different sets of acoustic means (11) identifying said objects.

Energy of said acoustic signals from said loudspeaker is affected by a set of acoustic means of said object, different objects having different sets of acoustic means (11) identifying said objects.

Resolution 2.12 on Guidelines for the use of acoustic deterrent devices

Listening in: Acoustic monitoring devices detect illegal hunting and logging

Acoustical devices are formed of a conductive loaded resin-based material (32).

Piezoelectric pickups are commonly used for folk guitars and other acoustic instruments.

Therefore, the capability of the communication device to operate with various types of acoustical devices is improved.

Some ships can even deter attacks with Long Range Acoustic Devices that emit loud, painful noises.

His tools are mainly laptops, magnetic fields detectors, piezoelectric microphones and various acoustic devices.

Chemical repellents don’t work, nor do electric shocks, or bubble curtains, or acoustic deterrents.

Radar-controlled Long Range Acoustic Devices (LRADs) and lasers prevent bird landings at night and in poor visibility conditions.

to keep a watch over the recent advances in technology regarding the acoustic devices for mitigating the interactions between cetaceans and fishing gears,