noise canceling headsets

noise_canceling_headsetsHow do noise canceling headsets work?

There are a number of components required to achieve the noise canceling effect:

A microphone placed inside the earphone “listens” to external sounds that cannot be blocked passively.

The noise canceling circuitry is fitted discretely in the ear-cup. It senses the input from the mic and generates a “fingerprint” of what it hears, noting the frequency and amplitude of the incoming signal. Then it creates a new waveform that is 180 degrees out of phase with the waves associated with the noise. Merging the two waveforms together utilises “destructive interference†to blot out the unwanted noises leaving the caller’s or user’s speech.

These type of headsets require power to let the electronics do its bit.  This will be normally done by a rechargeable battery.

Using these constituents, noise canceling headsets are able to provide about 20 decibels of noise reduction. That means about 70% of ambient noise is effectively suppressed, making noise canceling headsets ideal for travelling or working in open plan office environments or other locations with a high level of background noise.  noise_canceling_headsets.pdf

At TelephoneSystemsDirect we have a large range of noise canceling headsets in our portfolio. 
Call us on 0800 652 8052 where our advisors can give you their undivided attention to help you select the most cost-effective noise canceling headsets.

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