Wednesday, March 7, 2012

How Do Noise Cancelling Headphones Work




You will find two types of noise cancelling headsets. Over-the -head headsets are a little larger and less compact however the Earbud headphones are generally compact and can be carried about in your wallet.





You will find two types of headphones designed to reduce the interference from the Monster Beats Solo noise which is created without your knowledge. These are the passive sound canceling headphones and the active noise cancelling headphones. Passive sound cancelling headphones work on the theory of muffling the external sound or sound to reduce the interference with music or recorded speech. Active noise cancelling beats dr dre Pro headphones however, digitally decrease the external nicely produce a silent and calm listening atmosphere.





Passive headphones essentially make use of the muffling characteristics which are provided by circum- aural headsets. It is developed like a cup with the rim surrounding the ear. The edge constitutes of high- density foam and sound damping material. It is soft and does not hurt the ears also it creates an traditional acoustic seal that has the ability to block 20 decibels of sound.





Energetic noise cancelling headphones are a more advanced edition and have the probability of reduce 20 decibels more noise reduction compared to passive design. It uses the phase cancelling technology in its working. This is the main crucial feature of this design. It works with a microphone to choose the external noise which the circum- aural cushions are unable to prevent or stop. The regularity and the intensity of the external sound are analyzed through the phase canceling circuit and it generates one image from the noise. The actual noise created is 180 degrees out of phase.





The actual speaker of the headsets plays the anti-noise together with the music or recorded speech. The actual artificially generated anti-noise is exactly the opposite from the external noise that has entered the device and so when the two noises satisfy they cancel out one another. The end result would be that the amount of the external sound becomes extinct and the audio you are listening to turns into very clear and hearable.


No comments:

Post a Comment