00000nam 2200000zi 4500 9.953746 CaOODSP 20250915150031 m o d f cr |n||||||||| 250731e199012 bccd obt f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn--- DR52-11/12-1990E-PDF Zakarauskas, Pierre, author. Effect on signal to noise ratio of clipping arctic accoustic data / by P. Zakarauskas, C.A. Hamm and J.M. Thorleifson. [Victoria, B.C.] : Defence Research Establishment Pacific = Centre de recherches pour la défense pacifique : Research and Development Branch, Department of National Defence, December 1990. 1 online resource (ii, 7 pages, 3 unnumbered pages) : charts. text txt rdacontent computer c rdamedia online resource cr rdacarrier Technical memorandum ; 90-17 Digitized edition from print [produced by Defence Research and Development Canada]. "Unclassified." Includes bibliographical references (page 7). "Arctic ambient noise is characterized by the presence of transients due to ice cracking. The present document reports the results of an investigation into the effect on signal to noise ratio (SNR) of clipping ambient noise time series to which artificial sinusoid signals had been added. Because the ambient noise contains more power at low frequencies than at high frequencies, it was deemed necessary to bandpass filter the time series before clipping. The effect of clipping on SNR was found to depend strongly on frequency. At low frequency the SNR was not greatly affected by clipping. At higher frequency, however, clipping was found to improve the SNR, by as much as 5 dB"--Abstract (page ii). Includes abstracts in English and French. Ice Acoustic properties Arctic Ocean. Glace Propriétés acoustiques Arctique, Océan. Defence Research Establishment Pacific, issuing body. Canada. Department of National Defence. Research and Development Branch, issuing body. Technical memorandum (Defence Research Establishment Pacific) 90-17. (CaOODSP)9.936067 PDF 565 KB https://publications.gc.ca/collections/collection_2025/rddc-drdc/DR52-11-12-1990-eng.pdf