Noise-cancelling headphones for a noisy world

	Inspiration can strike anywhere—even on an airplane. In 1978, Dr. Amar Bose was flying back to Boston from a business trip in Europe. He was trying out a new electrical audio headphone supplied by the airline, which replaced the stethoscope-style headsets of the time. Instead, this headphone had earcups with speakers inside. Even so, cabin roar from the jet engines made it nearly impossible to hear the music. Turning up the volume only created more distortion. His intellectual curiosity piqued, Dr. Bose wondered if it was possible to develop technology that could cancel noise. From his seat, he began sketching mathematical formulas to see for himself. From those initial efforts, Bose evolved a department of engineers devoted to solving the complex acoustic, electronic and mechanical challenges of noise cancelling headphones. The result: breakthrough noise-reduction technology.
	The first application of our noise-reduction technology was in 1986, when reports indicated that pilots for the first non-stop, around-the-world flight were likely to lose 30% of their hearing. Bose engineers realized that an experimental noise-reduction headset they developed could help prevent that loss. Flight organizers determined the Bose headset was essential, and it replaced the planned passive noise-reduction equipment. The mission was a resounding success, the pilots suffered no hearing loss, and the flight surgeon later said the Bose headset had been a "mission critical" addition. Since then, Bose noise reducing headphones have become essential equipment for military applications in high-noise environments—including US Air Force pilots and tank crews—as well as for commercial and private pilots.
	When QuietComfort® Acoustic Noise Cancelling® headphones were introduced in 2000, airline passengers could finally enjoy the benefits of Bose noise reducing technology. Bose headphones owners reported that engine roar was dramatically reduced, allowing them to feel less fatigued and more relaxed. They also discovered enhanced audio performance for movies and music—or just the chance to enjoy their own private haven. New QuietComfort headphone technologies have continued providing enhancements such as longer battery life, ease of use, reduced size and comfortable fit, without compromising outstanding audio performance. In 2006, Bose engineers developed a proprietary ear-cushion design to help overcome the performance limitations of smaller on-ear headphones. This improved the seal to the listener's ears, while reducing product size. For added convenience, that model employs a rechargeable lithium-ion battery with about 25 hours of run time. Today, Bose engineers continue to explore new technologies to refine and expand the possibilities of noise cancellation. Learn more about QuietComfort® headphones » Learn more about Aviation Headset X™ »

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