Millenium Health Tips

Most of the sound is a combination of signals, but the pure sound could theoretically be explained by the speed of oscillation or frequency measured in Hertz (Hz) and amplitude or loudness measuring sound in decibels. The sound could be heard by the human ear in case of vibrations in the air or other medium to the human eardrum. Limit the frequency of sound that can be heard by the human ear from approximately 20 Hz to 20 kHz in general amplitude with variations in the response curve.

Tool human ear and hearing constantly working as a door of communication and information through a complex process of transformation and complex to interpret the sound vibrations and sound environment. Without us realizing it, people did not escape the dangers of various factors that can interfere with its function. One of them is exposure to the sound of an increasingly noisy environment, which can cause hearing loss and health in general.

Continuous noise above 85 decibels will not only cause a complaint to the ear and hearing, but various studies have shown an increase in blood pressure, sleep disorders, digestive disorders, increased emotions, and various disorders caused by stress. As we know, many kinds of activities that exceed the threshold of 85 decibels, such as machine tools, bustling traffic, using the loudspeaker music, games, and other recreational activities. Thus, the most vulnerable are the construction and factory workers, those who move and live highway sidewalk, and the children.

Middle ear muscles in humans who work constantly not be able to survive the noise situation is too strong and continuous, so there are damaging excess stimulation function of hair cells. Hair cell damage may be temporary only in the beginning so that it will happen while deafness. However, later when there is constant stimulation, permanent damage, hair cell receptors that serve to dampen the vibration will be reduced to disappear and there settled deafness.

Deafness will occur in both ears symmetrically with the first high note, especially in frequency from 3000 to 6000 Hz. Often there is also a sharp reduction (dip) only in the frequency of 4000 Hz, which is typical for hearing loss from noise. Because the affected is a higher tone than the tone of human conversation, often in the beginning was not felt by the sufferer as they are not so obvious problems when communicating with others.

It must be understood that the higher the exposure to noise, the less exposure time period is safe. For example at 115 decibels (rock concert), 15 minutes alone dangerous, at 130 decibels (a jet engine), two minutes can cause hearing loss. Classical music and gamelan orchestra can also give exposure to noise over 85 decibels, but unlike the industry noise, intensity intermittent, alternating between the hard and soft, and the variation of tone that is wide enough, so that proved less harmful to the hearing. Even so, remain in the case of some musicians, that is between 10 to 50 percent may have a hearing loss.

In the event of deafness due to noise, can not be good again and need hearing aids are quite expensive. Therefore, better to avoid the noise and various tips. How? Avoid noise, reducing the volume of the sound around, and using protective equipment. Like the opinion of Helen Keller – a deaf and blind since the age of a toddler – when asked, if he got a second chance, which wants the removal? He said, wanted to be born again without hearing loss due to blindness separates it from the objects, while separating it from the human deafness.

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