Ship Sailing Sound Effect Free Download
Sylvia Heidemann
De Wolfe Sound Effects Library offers a very special blend of general and European sound effects together in one collection. This exceptionally well recorded digital sound effect library provides over 2,300 sound effects representing 23 distinct sound categories.
Combined with De Wolfe's wide selection of ambiences, transportation, domestic and comedy sounds are unique sounds like sailing an 18th Century Clipper Ship, the inside ambience of a Zeppelin and Harrier Jets on the attack.
To make accurate predictions of the expected background noise levels and characteristics caused by shipping, the contributions of many individual ships must be considered. Information on the distribution, density, and acoustic characteristics of the ships is needed. In addition, information on sound-speed profiles, bathymetry, and seafloor properties is needed in order to calculate how sound travels from the location of each ship to the location at which the background noise level is being computed. The U.S. Navy, as well as other navies, have long made such predictions. More recently, similar predictions have been made to help assess the potential effects of the sound generated by shipping on marine life. In particular, the U.S. National Oceanic and Atmospheric Administration (NOAA) convened the cetaceans and sound (CetSound) project to develop underwater sound field and cetacean density and distribution mapping tools. The predicted annual average noise levels in the Pacific Ocean for a frequency of 50 Hz and at 30 m depth due to large commercial ships are shown in the above figure (to the left).
Prior to the mid-19th century Industrial Revolution, low-frequency sound in the ocean was due to spray and bubbles associated with breaking waves, sounds generated by marine life, seismic noise, and other natural sounds. The Industrial Revolution marked the beginning of the use of powered (rather than sailing) vessels to transport goods and provide services. Increases in commercial shipping since that time have caused low-frequency noise levels to increase in many oceanic locations.
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