1957 by David Warren
The typical duration of the cockpit voice recorder is two hours.
David Warren is most known for his inventions for the airline industry. He invented the flight data recorder and also the cockpit voice recorder.
The Black Box is a small orange coloured box situated in the cockpit of the plane. It has two components. They are Flight data recorder and Cockpit Voice recorder.
There are two types of black boxes aka flight recorder, the flight data recorder (FDR) and the cockpit voice recorder (CVR).
The colour of blackbox is bright orange. It is not actually black in colour. It consists of the Flight Data Recorder and Cockpit Voice recorder.
it was thomas Edison who invented the electrical vote recorder but I don't know what it is
There are two "black boxes" on every commercial plane and on many or most private planes. They are the flight data recorder and the cockpit voice recorder.
Spoken shortly after Apollo 11 touched down by Buzz Aldrin. It was not broadcast over the radio to mission control, but was recorded by the onboard cockpit voice recorder.
"The first practical sound recording and reproduction device was the mechanical phonograph cylinder, invented by Thomas Edison in 1877 and patented in 1878" - from the wikipedia page on sound recording
If a plane crashes due to some cause then we can find out why the plane crashed with the help of Flight Data Recorder. If there is nothing they could find in the Flight Data Recorder, they could rely on the Cockpit Voice Recorder.
There are a few things that every airliner in the world is required to have. Two of these are the flight data recorder and cockpit voice recorder. The flight data recorder in a bright orange box typically weighs less then 20 pounds.
Sure, why not? CVRs are simply a recording device that can be hooked up to any radio-intercom system.