Year: 1974
Type: conference-abstract
Abstract: Two 914-day samples of ambient noise were processed and evaluated at 50 and 100 Hz as a function of four bandwidths and five averaging times. For 10-min averaging, the second moment of the sample population appears independent of bandwidth. For the 0.2-Hz bandwidth the noise level distribution is nearly log-normal for 10-sec averaging time, whereas for the 10-min averaging time a skewness toward the higher noise levels is apparent. Decorrelation times for 0.2-Hz bandwidth levels averaged for 1 min were observed to range from 1 to 246 min. With averaging time increased to 10 min, decorrelation times ranging from 20 to 280 min were observed. The results show that statistical parameters are a function of bandwidth, averaging time, and time. [Supported by ONR and ARPA.]
DOI: 10.1121/1.1919620
Authors: M. S. Weinstein, R. J. Hecht, L. A. Mole
Language: English
Subfield: Oceanography
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2050879321