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Ear is a delicate sensory organ. Understanding the physiology of the ear will show that the eardrum is a very sensitive portion of the ear and can be damaged by any slightest injury either in the form of physical injury or as wavelengths. Noise or loud sounds cause physical damage to the inner ear leading to Loss of hearing, either temporary or permanent, ringing in the ears medically known as Tinnitus and painfully over-sensitive hearing or hyperacusis. Besides the physical damage, loud noise also has physiological and secondary effects on the human system. These include increase of blood pressure, increased heart rate, digestive disturbances, and even migraine. It thus becomes imperative to protect ones ear from exposure to loud noises.

Noise-induced hearing loss is different from sensory neural hearing loss and can be reduced or prevented altogether with the help of proper protective aids. The field of medical science together with the technological world has developed and designed noise cancelling hearing protection devices, which deliver a total high-noise communication solution, which ensures that the users can communicate face-to-face, irrespective of the distance. This technology makes use of a two-way radio and Bluetooth cell phone. This new approach to occupational hearing conservation combines noise-cancelling technology with speech enhancement technology. This makes it feasible for the users to hear speech while hearing protection is active in high noise producing workplace.

The Bluetooth hearing protection and noise cancelling earmuffs delivers total high noise communication solutions, by bringing together the two-way radio, Bluetooth cell phone and other communication systems. Confirming to the industry specific standards of hearing protection, these noise cancelling hearing protection aids ensures maximum output of 82dB in noise up to 105dB and for the SDP up to 120db. Further, with its 360-degree binaural situational awareness feature, it ensures complete awareness of the environmental happenings.

This Active Noise Cancelling (ANC) technology makes use of the technique of electronic coupling of a noise wave with its exact mirror image, thereby canceling the noise. Commonly termed as Active Noise reduction (ANR) or Electronic Noise Cancellation (ENC) this forms the basic technology in safety earmuffs and noise cancelling headphones. The low frequency noise waves generated by engines, and motors fans, travel great distances and have the ability to penetrate passive barriers. These cannot be easily eliminated with traditional hearing protection devices.  The noise cancelling hearing protection aids like the noise cancelling earmuffs is an effective method of attenuating low-frequency noise.

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