Underwater speaker
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Revision as of 11:01, 4 August 2011 by Scott (Talk | contribs) (Reverted edits by 41.215.183.3 (talk) to last revision by Scott)
We use an underwater speaker (intended for synchronized swimmers) to measure how sound propagates in different environments. The Lubell system has a maximum output level of 180 dB re 1 microPa @ 1 m. In spreading lab exercises off the Friday Harbor Lab docks, we have measured source levels of about 160 - 170 dB re 1 microPa @ 1 m with a typical sound sample and gain settings.
