Active Noise-cancelling Devices
Active noise-cancelling devices are electronic systems that use microphones and speakers to reduce unwanted noise in an environment. In aviation, active noise-cancelling devices are commonly used by pilots and passengers to reduce the noise generated by aircraft engines and other sources. These devices work by using microphones to pick up external noise, which is then cancelled out by generating an opposite sound wave through the speakers. This results in a significant reduction in the overall noise level, making it easier for pilots to communicate with air traffic control and for passengers to relax during flights.
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