Title :
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
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;
Conference_Titel :
Signal Processing & Its Applications (CSPA), 2015 IEEE 11th International Colloquium on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4799-8248-6
DOI :
10.1109/CSPA.2015.7225609
