7.03.2010

Under water microphones


Under water microphones, or hydrophones, come in a wide variety of sizes, shapes and materials. One underwater microphone might be very expensive and work very well for oil and gas exploration, but may not work well for listening for whales and dolphins. So buying the most expensive unit you can find doesn't necessarily guarantee it will do the job.

Many people think that underwater microphones are nothing more than a cheap standard microphone in a waterproof case. Nothing could be further from the truth. Sound transmission in water is much different that sound in air. A microphone that works well in at a karaoke bar won't work in water!

Hydrophones, real underwater microphones, are generally made from piezoelectric materials that generate small voltages when deformed. Sound wave hitting the piezoelectric element create stresses in the material which are converted into an electrical signal. This signal is amplified and fed into a set of earphones, or connected to an external speaker system, or tape recorder.

Dolphinear hydrophones uses a sensitive MPC piezoelectric element encased in a special epoxy. This provides high sensitivity and an excellent frequency. Because of their unique housing they are very rugged and able to withstand abuse.

Introducing the world's first affordable underwater listening device! Just slip on the earphones, and drop the 'hydrophone' into the sea ~ you're instantly transported into the magical world of 'Live Underwater Sound'.

The most common reaction from first-time users of DolphinEAR is "WOW! I didn't know there was so much sound in the sea!"

Hear whales, dolphins, manatees, seals, fish, shrimp and more. Hear man-made sounds from boats, ships and even submarines. Hear natural phenomenon like an underwater landslide or the cracking of ice on a river or lake.

It's FUN! DolphinEAR introduces children and adults to an aspect of the natural world that was previously hidden. It encourages exploration, understanding and appreciation of the natural undersea world and the planet on which we live.

DolphinEAR is not a toy - it's a high quality, value-oriented instrument that will provide many years of enjoyment and instill in all an unbridled sense of wonder and amazement.

Whether you use it for casual listening, or for serious research, you'll find DolphinEAR meets your requirements. As a bonus, we've even provided free software that lets you 'SEE' underwater sounds on your PC computer screen.

Identify individual dolphins by their own unique 'signature whistle'. Make high quality digital recordings of 'whale songs' that can be stored on your hard disk. It even prints colorful sound charts for use in presentations, science fair project, or Master's Thesis.

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