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Application Principle Of Noise Cancelling Headphone

Apr. 08, 2018 | 14:07:07

  Noise cancelling Headphone is a type of headset that uses some method to reduce noise. There are two types of noise reduction headphones: active noise reduction headphones and passive noise reduction headphones.

  Noise-reducing headphones, using active noise control, are different from the passive sound insulation of general headphones. The principle is:

  1. Detect low-frequency noise (100 to 1000Hz) in the environment that can be heard by the ear from a microphone placed in the earphone

  2. The noise signal is then transmitted to the control circuit, and the control circuit performs real-time operation

  3. Play sound waves with the same phase and amplitude as the noise from the Hi-Fi speaker to counteract the noise

  4. Noise disappears after superimposition

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BT & ANC Stereos Headphone HN-08


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