| A noise-canceling microphone is one that cancels any | | | | used in the military, to receive accurate and clear audio |
| unwanted, disturbing surrounding sounds by using an | | | | communication. Telephone conversations can also be |
| active noise control. In this process, the microphone is | | | | made noise free with the help of these microphones. |
| placed near the ear and the electronic circuitry | | | | Mountaineers who undertake difficult expeditions also |
| generates an antinomies sound wave that is 180 | | | | benefit from these microphones because some |
| degrees out of phase, from the sound coming | | | | models are designed to work in a full pressure type |
| towards the microphone. | | | | oxygen helmet. Telephones can be modified and |
| Some of the companies that make noise-canceling | | | | made easier to operate by installing these |
| microphones are Sony, Aiwa, and Bose. The | | | | microphones. The noise in the background makes it |
| advantage that these types of microphones provide is | | | | very difficult for the speaker to understand the person |
| that they are not very taxing on the electronic circuitry. | | | | at the other end. These microphones clarify speech, |
| One of the disadvantages of using a noise-canceling | | | | which would otherwise end up as a muffled, annoying |
| microphone is that they need an electrical supply from | | | | conversation. |
| a battery. Sometimes, they emit high frequency hissing | | | | It can be clearly judged from the observations made |
| sounds that become annoying after some time. | | | | on these microphones that noise-canceling |
| The models available in the market are, Aiwa HP CN | | | | microphones are used in every walk of life and in |
| 6, AKG k 28 NC, Bose Quite Comfort, and Jensen c51. | | | | almost every profession, especially the entertainment |
| Noise canceling microphones are very useful when | | | | industry. These microphones have revolutionized the |
| listening to music, when installed in lawn mowers, and | | | | approach towards noise pollution and keeping it |
| refrigerators. Noise canceling microphones are also | | | | effectively under control. |