[MARMAM] New PAM publication (Nathan Merchant)

Nathan D. Merchant ndm23 at bath.ac.uk
Wed Mar 13 07:15:22 PDT 2013

Dear MARMAMers,

those of you involved in passive acoustic monitoring may be interested  
in our recent paper on performance assessment of PAM devices and  
statistical characteristics of noise levels:

Spectral probability density as a tool for ambient noise analysis
Nathan D. Merchant, Tim R. Barton, Paul M. Thompson, Enrico Pirotta,  
D. Tom Dakin, and John Dorocicz, J. Acoust. Soc. Am. 133, EL262-EL267  


This paper presents the empirical probability density of the
power spectral density as a tool to assess the field performance of passive
acoustic monitoring systems and the statistical distribution of
underwater noise levels across the frequency spectrum. Using example
datasets, it is shown that this method can reveal limitations such as
persistent tonal components and insufficient dynamic range, which
may be undetected by conventional techniques. The method is then
combined with spectral averages and percentiles, which illustrates how
the underlying noise level distributions influence these metrics. This
combined approach is proposed as a standard, integrative presentation
of ambient noise spectra.

The paper is open-access and can be downloaded free here:  

Kind regards,

Nathan Merchant

Nathan Merchant
PhD Researcher
Department of Physics
University of Bath

+44 1225 385543

n.d.merchant at bath.ac.uk

More information about the MARMAM mailing list