10.1371/journal.pone.0095315.g002 Z. Daniel Deng Z. Daniel Deng Brandon L. Southall Brandon L. Southall Thomas J. Carlson Thomas J. Carlson Jinshan Xu Jinshan Xu Jayson J. Martinez Jayson J. Martinez Mark A. Weiland Mark A. Weiland John M. Ingraham John M. Ingraham Sound pressure level spectra measured from different distances for the three sonar units. Public Library of Science 2014 Marine biology Marine monitoring Marine technology neuroscience Sensory systems Auditory system Zoology Animal behavior Mammalogy otorhinolaryngology Otology marine and aquatic sciences Aquatic environments Marine environments spectra distances sonar 2014-04-15 04:31:15 Figure https://plos.figshare.com/articles/figure/_Sound_pressure_level_spectra_measured_from_different_distances_for_the_three_sonar_units_/1000563 <p><b>A</b>. Kongsberg; <b>B</b>. BioSonics; <b>C</b>. Imagenex.</p>