title: INTERFERENCE IMMUNITY OF THE DOLPHIN'S (TURSIOPS TRUNCATUS) SONAR TO NARROW-BAND INTERFERENCE
abstract: The data base of the dolphin acoustic activity patterns exhibited under the conditions of the narrow-band interference was created. Monofrequency signals with frequency 50 kHz, 80 kHz and 100 kHz were used as noise. According to the analysis of phonograms, animals used only multipuls mode of echo-location in all the tests performed. Signals consist of packets. The number of clicks in the packet is equal to 23 and does not depend on the level of the acoustic pressure of noise. The clicks are grou