Long distance listening, without being noticed

ottobre 5, 2010 Technology No Commenti

How many times have we seen two people, whether friends or perfect strangers, engaged in a conversation, at a distance from which we could not hear what they were saying, and wanted to be able to hear it without being exposed? Of course, those who have found themselves in these situations, have mostly been left with nothing and could not listen.

But now, thanks to audio technology, long distance listening of conversations of your neighbors, colleagues, or family members, or even collecting evidence of industrial espionage or of a possible marital infidelity, has become much easier, especially if you use a directional microphone or a laser microphone.

Through the use of microphones of this kind, with their high sensitivity features and characteristics, it is possible to listen to conversations within a range between about ten meters and more than a mile! By hiding in a car behind a fence, and pointing the microphone in its direction, you can easily listen to what the people behind it are talking about.

Actually, you can even easily hear what goes on behind a closed window, thanks to a directional laser microphone. In fact, by pointing the invisible laser beam on a window, the beam will read the vibrations on the glass caused by voices inside the room behind the closed window, and transmit them to a decoder located at a safe distance, which reads them, transforming vibrations into human voice.

Be it to listen to your neighbors or to gather evidence against dangerous criminals, from a distance of a few meters up to more than one kilometer, a highly sensitive directional microphone allows you to listen to everything!

To find out in detail how long range microphones are working, and to discover the endless possibilities of application, you can visit the Endoacustica website and contact our experts for personalized advice.

The first plane with no flaps is an unmanned plane

ottobre 5, 2010 Technology No Commenti

BAE Systems has just made history of aviation, with the first ever flight of an aircraft not fitted with flaps on its wings. In fact, this unmanned aircraft, or UAVs (Unmanned Aerial Vehicle), called DEMON, instead of flaps and ailerons, resorts to the use of controlled air jets to move upward or downward while in the air.

Normally, the wings of a conventional aircraft are equipped with moving parts (the flaps) in the back, which are opened and extended backwards and downwards during takeoff and landing. This changes the shape of the wing, and air must follow a different path to travel around the wing itself, creating a lift.

The Demon UAV, instead, achieves the same result via controlled air jets, which alter the course of the air near the wings, instead of modifying the shape of the wing itself. Sensors mounted on the tips are used to continuously monitor the air flow and to change the direction of the air jets.

According to experts, this could make flying much easier, due to lack of moving parts that could potentially get stuck. In addition, a plane with a profile like that leaves a smaller radar footprint, with easily imaginable advantages for stealth-mode flights, which makes these UAVs particularly suitable for use in reconnaissance missions behind enemy lines.

Demon is in its experimental stage and is still not entirely autonomous, but once then tests are successfully completed, it will operate independently from any human control from the ground, except for setting up the mission coordinates and mounting the necessary equipment to carry it out.
Although this is a prototype, its features have sparked a great interest in aviation, because in a not too distant future, the solutions used for this UAV could also become commonplace in commercial aviation.

An intelligent walking cane for the blind

ottobre 5, 2010 Technology No Commenti

The life of visually impaired people, especially in cities where cars are driving fast and passersby are jostling all the time to get to their destinations, can be even more complicated than their disability already makes it.

For several years, various research institutes have been working to try and alleviate this kind of inconvenience, and the latest discovery in this respect comes from the University of Arkansas, where a research team has created a laser walking cane for the blind, which thanks to its technology enables its users to better get oriented, thus avoiding risks.

This is achieved by using radar laser sensors, which within a few seconds are able to obtain an image of their surroundings. Thanks to an algorithm created by the research team, the sensors then calculate the user’s position within that environment, and determine the relative motion between the person with the cane and any other persons, objects or vehicles around them.

In this way, the system inform its user about where it is and where it is going, and detects obstacles such as stairs, doors, potholes or anything that could pose a potential threat. If any such obstacles are located, the system would play a sound that warns its blind user of a dangerous situation ahead.

In short, due to its laser sensors, this walking cane for the visually impaired works like some kind of GPS navigation system, with features that make it suitable for use by those who have lost their sight.
The research project has received over 300 thousand dollars in funding from the National Science Foundation, and the cane could be available to end users over the course of next year.


ottobre: 2010
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Newsletter Endoacustica Europe - ENGLISH



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