Both the level and duration of fatiguing sounds influence temporary threshold shifts (TTSs) in odontocetes. These two parameters were combined into a sound exposure level (SEL). In the beluga whale Delphinapterus leucas, TTSs were investigated at various sound pressure level (SPL)-to-duration ratios at a specific SEL. At low SPL-to-duration ratios, the dependence was positive: shorter high-level sounds produced greater TTSs than long low-level sounds of the same SEL. At high SPL-to-duration ratios, the dependence was negative: long low-level sounds produced greater TTSs than short high-level sounds of the same SEL. Thus, the validity of SEL as a metric for fatiguing sound efficiency is limited.
CITATION STYLE
Supin, A., Popov, V., Nechaev, D., Sysueva, E., & Rozhnov, V. (2016). Is sound exposure level a convenient metric to characterize fatiguing sounds? A study in beluga whales. In Advances in Experimental Medicine and Biology (Vol. 875, pp. 1123–1129). Springer New York LLC. https://doi.org/10.1007/978-1-4939-2981-8_139
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