sound detector

Then suddenly Ned looked critically at the sound detector; he became hopeful for Tom.

These trials, which started pre-war, used a warning service based on sound detectors and searchlights.

The more time-consuming search with dogs, heat-seeking devices and sound detectors would be abandoned.

Heat and movement sensors, pressure pads, trip ports, and sound detectors had failed to uncover it.

Sound detectors were used to locate survivors beneath the slabs by picking up faint moans and cries.

Cardisoma guanhumi finds its food using light and sound detectors.

I believe it is safe to assume that their sound detectors are equally as advanced as the rest of their technology."

Several years ago, the registration of energetic particles and showers with sound detectors in sea water was planned as an important part of global monitoring.

Technology at the outset of World War II consisted of mechanical sound detectors that were found to be inadequate to the job.

But the privateer pilot must have eyes like singularities, devouring worlds, or there's some remarkably fine equipment on the 'opter-maybe one of those sound detectors?

A series of sound detectors capture the returning echoes, which are used to determine just what lies below the surface, in a process known as seismic reflection profiling.

There, the boat helped a Navy Experimental Board embarked in Margaret carry out various sound detector tests in nearby waters.

Newman noted video cameras and sensing devices infrared motion detectors, sound detectors, and alarms that would sound if someone tried to cut the fence links.

A different power strip design intended to save energy uses a passive infrared (PIR) or ultrasonic sound detector to determine if a person is nearby.

In addition, he said, sound detectors in Los Angeles, Hawaii, Alaska, Canada and Germany had picked up its shock waves.

On top of that, its security system included both radar and heavy equipment sound detectors, and Ames had surrounded it with a minefield full of nonlethal noise poppers.

The Germans possessed large numbers of AAA batteries, of good quality and varying calibers supported by searchlights, sound detectors and visual ranging apparatus.

Reports spoke of impressive arrays of airborne radar, of heat sensors and weird sound detectors and aircraft full of sensing missiles and bristling with guns.

Subs trying to pass unobserved through the straits did so with the certain knowledge that the waterway was thickly laced with sound detector equipment and other sub-hunting gear.

"Huge Ear Locates Planes and Tells Their Speed" Popular Mechanics, December 1930 article on French aircraft sound detector with photo.

Situational awareness - A front-mounted video camera, vision aides (such as night vision sensors) and sound detectors providing three dimensional audiological hearing would be embedded in the uniform's helmet.

The police, having seen or heard nothing of Rosario Musca all day, circled the house with a sound detector - a big microphone on a long pole - but heard no sign of life.

In this system, a sound detector captures the sound, separates the activity sound (typically speech) from the background (sound masking) and adjusts the masking so the difference between the two is kept constant.

The Dumand detector, as Dr. George Wilkins of the University of Hawaii explained, consists mostly of 100 million tons of sea water, throughout which light and sound detectors are dispersed.

A pair of large, almost transparent ears hung limply from the head, twitching occasionally and some- times folding themselves into trumpets which looked as if they might be extremely efficient sound detectors, even in this thin atmosphere.