Daily Archives: April 20, 2014

How does an aeroplane’s ‘black box’ work?

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After doing a little research, I can now tell you (basically) everything you ever wanted to know about black boxes…

In the average commercial aircraft, you’ll find the presence of multiple (usually four) microphones in the cockpit at any given time. They are located in the pilot and co-pilot’s headsets, as well as in the cockpit itself. Not only do these microphones record conversations between the pilots and cabin crew, they also record any ambient noise (such as switches being thrown or sounds generated by technical issues). The microphones all connect to the cockpit voice recorder (CVR), a master unit that stores the last 30 minutes of sound. The tape operates on a loop, essentially erasing itself every half hour. Continue reading

A bone conducting earpiece, what makes it unique to other types

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Music is a large element of everyday life also it may be for almost as long as Human beings have now been on this earth. I often point to a finding of a 40,000-year-old flute dating back to that ice age as evidence for this, but truthfully, all the evidence you’ll need is all around you, every day. We remember ballads and music long after the folks who initially composed them have died and rotted away (a thought which I find curiously reassuring) plus the music industry, like it or hate it, is actually a big business. Continue reading