As with all hearing protection devices, the comfort of the headphones is an important point for consistent and correct use in the workplace. Various studies have been conducted to examine headphone design features and their effect on user comfort. There is some conflicting evidence among these studies, particularly regarding the subjective effect of headband strength and the relevant parameter of mean cushion pressure. Studies are still underway to isolate the effects of earbud design alternatives on clamping force, mean pressure, and ear pad filler.
The use of hearing protective equipment in high noise environments is an indispensable equipment that prevents permanent hearing loss for employees. In this context, ear protection comfort is important. The selection of the hearing protection equipment used should be based on comfort rather than noise. New methods are presented to determine the comfort of the earmuffs and to measure the contact pressure distribution between the ear pad and the human head surface.
Other parameters such as contact pressure distribution, as well as the total strength of the headband, headphone weight, contact area, noise attenuation, and temperature and humidity can affect the comfort of a headset. For example, it is suggested that the total force of the headband be less than 14 N. Headphone weight should be 220 grams on average, and the standard deviation should be 57 grams. For the same headband force, a larger contact area and a lower pressure value provide better comfort. However, a large contact area also causes leakage. In short, headphones should cover the smallest possible area of the head surface. In addition, ambient temperature and humidity affect both acoustic performance and comfort of use.
Measurements focusing on contact pressure distribution are carried out in advanced laboratories. A subjective evaluation is also made to verify the measurement results.
Our organization also provides headphones, headband strength and pillow pressure testing services within the framework of hearing protection equipment testing services.
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