Underwater speaker

From Beam Reach Wiki
Revision as of 12:01, 4 August 2011 by Scott (Talk | contribs) (Reverted edits by (talk) to last revision by Scott)

Jump to: navigation, search

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.