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Noise-cancelling aviation headsets are now commonly available. [5] [6] In 1989, Bose Corporation introduced its Aviation Headset Series I, which became the first commercially available ANR headset. [7] Several airlines provide noise-cancelling headphones in their business and first-class cabins. Bose started supplying American Airlines with ...
The wavelength in air of sinusoidal noise at approximately 800 Hz is double the distance of the average person's left ear to the right ear; [1] such a noise coming directly from the front will be easily reduced by an active system but coming from the side will tend to cancel at one ear while being reinforced at the other, making the noise ...
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So the application of adaptive noise cancelling in active noise control is somewhat incidental and represents an intersection between the two fields that is a minute part of both fields. Active (acoustic) noise cancelling can be done with or without adaptive techniques and only a few noise cancelling headphones use adaptive processing.
Zing Me is a social network operated by VNG, introduced in August 2009. It is integrated directly via the Zing system, with a variety of special applications like blogging, photo and music sharing, gaming, video clips, and email. In addition, Zing Me was the first social network in Vietnam that had the properties of a platform.
Adaptive noise cancelling is a signal processing technique that is highly effective in suppressing additive interference or noise corrupting a received target signal at the main or primary sensor in certain common situations where the interference is known and is accessible but unavoidable and where the target signal and the interference are unrelated, that is, uncorrelated [1] [2] [3].