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How does the noise get cancelled?

April 26, 2017cancelled noise

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How does the noise get cancelled?

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Ans: One common method for cellular phones is that it “filters” (takes out) frequencies that are outside the range of the human voice. This results in reduced noise but does not truly cancel out background noise. Any sound (noise) that is in the same frequency of the human voice would be heard as well. However, the Noise Terminator does not cancel noise because it does not pick it up. Due to the voice coming from the vibrations in the neck and not from the air, there is no extraneous background noise for the microphone to pick up.