Analia, RiskaLubis, M. ZainuddinSihombing, Perdi Novanto2023-01-092023-01-092017-12-22https://repository.polibatam.ac.id/xmlui/handle/123456789/1464The application of passive acoustic in marine can be used to ease the researcher for detecting the moving and static object in the water. The Fast Fourier Transform and wavelet is applied to the signal system in order to detect the noise and signal perform by object detected. The experimental results present the data got from koi fish and gourami fish in the plastic container which dimension is diameter 20cm and height 10cm. The data shows that the object can produce 13 sound patterns which koi fish has -15,66 dB in sound intensity while gourami fish has - 18,71 dB.idTeknik ElektroTeknik ElektronikaArduinoFFTThesis