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One-third Octave Band Sound Pressure Levels at 1 Hertz and 1 Hour Resolution Recorded at SanctSound Site HI06_01

Published by NOAA National Centers for Environmental Information | U.S. Census Bureau, Department of Commerce | Metadata Last Checked: January 27, 2026 | Last Modified: 2022-04-15T00:00:00.000+00:00
This record represents the one-third octave band sound pressure levels (TOLs) derived from raw passive acoustic data. TOLs were calculated by integration of sound pressure spectral density estimates of the mean-square pressure with a 1 Hz/1 second resolution over 30 one-third octave bands with the nominal center frequencies ranging from 25 to 20,000 Hz. The result is then calculated per hour as a median over no less than 1,800 1-second values for that hour and converted to decibels (dB re 1 µPa). These data were recorded at SanctSound Site HI06_01 between December 01, 2019 and July 01, 2020.

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