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            Ambient noise reduction2014-12-05

            Ambient noise reduction

               Unwanted sound from the environment can be reduced by excluding sound from the ear by passive noise isolation, or, often in conjunction with isolation, by active noise cancellation.

               Passive noise isolation is essentially using the body of the earphone, either over or in the ear, as a passive earplug that simply blocks out sound. The headphone types that provide most attenuation are in-ear canal headphones and closed-back headphones, both circumaural and supra aural. Open-back and earbud headphones provide some passive noise isolation, but much less than the others. 

               Active noise-cancelling headphones use a microphone, amplifier, and speaker to pick up, amplify, and play ambient noise in phase-reversed form; this to some extent cancels out unwanted noise from the environment without affecting the desired sound source, which is not picked up and reversed by the microphone. They require a power source, usually a battery, to drive their circuitry. 

               As the first brand headphones manufacturer in Shenzhen, Kubite Audio-visual Co., Ltd. has a professional R & D team. R & D  is the company's core philosophy and we strive to develop good products at a rock-bottom price for more music lovers and headphones enthusiasts. Kubite is a manufacturer producing bluetooth headset and bluetooth headset OEM, specializing in bluetooth headset wholesale, Internet game headset wholesale, computer headset manufacturer. If you need headphones at reasonable price and good sound quality, don't hesitate, contact us.--- Kubite Audio-visual Co., Ltd.


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