DPA Hydrophone 8011 User Manual - Page 7

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User's Manual

Using the Hydrophone

Stereo recording in water

Due to the omnidirectional pick-up pattern of the Hydrophone it is possible

to record A-B stereo using two 8011 Hydrophones. The spacing between the

two Hydrophones needs to be 4 times larger (approx. 1-2 meters) than when

making A-B stereo recording in air. This is due to the fact that wavelengths

are 4-5 times longer in water than in air. Please see the table below.

Speed of sound in water