hydrophone

"He was supposed to meet me here and pick up some hydrophones."

The hydrophones may do more than act as position indicators.

He heard the hiss of the hydrophones in the room.

There are several ways of employing such communication but the most common is using hydrophones.

Quinn heard the singer even before they put the hydrophone in the water.

For the past few minutes, we've stopped picking up any evidence of weapon fire from the hydrophones.

"We'd need to pass right over three of the hydrophone lines to get fully through the gap."

Bottom mounted hydrophones can also be used, with land based processing.

The seaman with the hydrophones over his ears looked up.

A new way to direct is to use a spherical body around the hydrophone.

That handle right under the edge of the seat is the hydrophone direction control.

Using several hydrophones to make array, it is possible to listen specific direction.

Hydrophones have also been used to measure muscles immersed in water.

The boat's hydrophones picked up the sound of dolphins playing and "talking to each other".

He stopped the recorder and pulled up the hydrophone, then started the engine.

Through the hydrophones, he could hear the grind of its maw.

Huge radars, hydrophones and other sensors have a major role.

Once again, they heard the hiss of the hydrophones.

"It's a sub, all right," he said a short time later, listening again over the hydrophones.

In water, hydrophones are used, which convert pressure changes into electrical signals.

"Can you get hold of some hydrophones so I can check for noise?"

Through his hydrophones, a hollow tumble of rock sounded behind him.

But they won't tell the hydrophone monitors back at the base anything about our safety.

A Type 93 passive hydrophone system would have been fitted in the bow.

To help our search, the captain used a hydrophone to listen for whale song.