APPARATUS FOR FRIGHTENING NOXIOUS ANIMALS BY MEANS OF ACOUSTIC SIGNALS

摘要

The apparatus for frightening noxious animals comprises a programmable microprocessor (12) and an electro-acoustic transducer (21). The microprocessor (12) is directly or indirectly connected by means (14-20) to the acoustic signal emitting transducer. The microprocessor (12) and the means (14-20) are arranged so as to produce time variable acoustic signals which frighten noxious animals without disturbing human beings and domestic animals.