Hydrophone sensor

1. What is hydrophone sensor?
2. How do hydrophones work?
3. How far can a hydrophone detect sound?
4. What is difference between transducer and hydrophone?

What is hydrophone sensor?

A hydrophone is an underwater device that detects and records ocean sounds from all directions. People often think that the underwater world is silent. In fact, numerous marine organisms use sound for communication, reproduction, and to seek prey.

How do hydrophones work?

A hydrophone is an underwater listening device. Just as a microphone is used to detect sound in the air, a hydrophone detects sounds in the water and converts the acoustic energy into electrical energy. Hydrophones listen to sounds in the sea, but do not transmit any sound, making them passive listening devices.

How far can a hydrophone detect sound?

Using an underwater microphone called a hydrophone, a second boat stationed 900 miles away successfully detected the sounds. Subsequent tests picked up the signal at a distance of 3,000 miles.

What is difference between transducer and hydrophone?

A transducer that transmits underwater acoustical sound waves is called a sound projector and is analogous to an audio loudspeaker that transmits in air. A transducer that receives acoustical sound waves is called a hydrophone and is analogous to a microphone.