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FAQ

What is a noise-cancelling microphone, and how does it work?

A noise-cancelling microphone, such as those built into CavCom‘s Phantom™ and Classic™ headsets and many of our lapel speaker mics, is a sophisticated technology used to improve voice clarity in noisy environments. These devices work by comparing sound inputs from two microphones. The primary microphone faces your mouth to focus on your voice, and the secondary microphone is oriented in the opposite direction to pick up environmental/background noise. Then a digital algorithm is used to differentiate your voice from background, and to suppress the environmental noise. The result is a clearer voice signal transmitted to your listeners.

It's important to keep in mind that in order for noise-cancelling technology to work properly, correct microphone position is critical. When using a lapel microphone, speak directly into the mic (mouth within 1 inch of mic port). When using our headsets, bend or extend the boom microphone to be within 1 inch of your mouth (either directly in front or to the side of your mouth). If the microphone is too far away or if the mic is pointed in the wrong direction (at ceiling or floor for example), then the noise-cancelling circuitry will not be able to distinguish your voice from background noise. When used properly, a high quality noise-cancelling boom microphone provides a clear advantage in noisy environments... your listeners will thank you!

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