Evaluation of underwater acoustical intermittent ambient noise

Author

Bahrami, Nima ; Khamis, Nor Hisham Haji ; Baharom, Ameruddin

Author_Institution

Dept. of Electr. Eng., Univ. Teknology of Malaysia (UTM), Skudai, Malaysia

fYear

2015

fDate

6-8 March 2015

Firstpage

11

Lastpage

14

Abstract

This paper focused on the analysis of underwater intermittent biological noises produced by dolphin, shrimp, seahorse, bubble samples. We analyzed the noise frequency spectrum and calculate sound level pressure for every sample in its frequency distribution. Using stationary test, signal changes in the interval of 0.1 second is observed. Assuming Gaussian distribution, normality trial is investigated. Simulations and examinations are done using MATLAB programs in order to illustrate signal noise behavior to optimize filtering and detection purpose. From this study, all samples exhibit stationary and normality distribution properties, in addition the bubble and shrimp have a higher sound pressure level compare to other samples.

Keywords

Gaussian distribution; acoustic noise; bioacoustics; normal distribution; underwater sound; Gaussian distribution; MATLAB programs; bubble; filtering; frequency distribution; noise frequency spectrum; normality distribution properties; normality trial; shrimp; signal noise behavior; sound level pressure; stationary distribution properties; stationary test; underwater intermittent biological noises; Biological information theory; Dolphins; Noise; Sonar; Underwater acoustics; biological noise; normality test; sound pressure level; stationary test; temporal variation; underwater ambient noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing & Its Applications (CSPA), 2015 IEEE 11th International Colloquium on

Conference_Location

Kuala Lumpur

Print_ISBN

978-1-4799-8248-6

Type

conf

DOI

10.1109/CSPA.2015.7225609

Filename

7225609