Examination of natural noise signals:preliminary results for aquatic environment

摘要

The present article treats the signal analysis and the revealing of the properties of noise signals which are caused by cavitation,boiling,flow and motion of water(aquatic environment)in natural conditions.All examined signals are not of androgenic and/or technogenic origin and corresponds to a few natural processes e.g.,boiling water,rain,sea surf.All analyses are conducted in the Matlab~R environment and include:computation of the mean and RMS values,dynamic range,crest factor,skewness and kurtosis,autocorrelation time;test for stationarity;plot of the oscillogram,correlogram,histogram,periodogram and spectrogram.Finally,some common conclusions are drawn,based on the analyses results.