Why we do not love neighbors? Answering this question, every second will surely remember magic sounds of a drill in the morning in some of days off. Agree, with such "alarm clock" not that there will be no dream left, and a half of nervous cages at least will collapse. And it is valid, influence of noise on our nervous system is huge. Where we were, the irritating sounds will be able to discompose us and our health. Why it occurs?
How does noise influence the person?
Noise it is accepted to call chaotic set of the sounds different in the frequency and force of influence. That is, this unpleasant combination of the sounds breaking our tranquility irritating our hearing and even destroying an organism. Noise represents the physical phenomenon - it is wave fluctuations of various intensity and frequency (and our ears are capable to perceive frequency from 16 to 20000 Hz). What influence of noise on the person can be calculated depending on his source, loudness and intensity.
Daily we face hundreds of various sources irritating hearing, both internal, and external:
- being at home, we face sounds of removing of furniture, music from columns, noise from the equipment, household and repair appliances. And about everyone year the quantity of such irritants becomes more;
- without leaving the house, we can hear so-called intra quarter noise: these are sounds of the cars which are taking out garbage from each entrance, knocking-out of carpets in the yards or shouts of children at playgrounds;
- source of city, i.e. external noise most often is motor transport. Trolleybuses, cars and the heavy road machinery during the whole light day is the main source of influence of noise on a human body. More than 60% of complaints to noise of inhabitants of the whole world are connected with motor transport. It is proved that headaches people whose houses are located near busy highways and the railroads most often have.
Influence of noise on human health
What after all happens to our organism when we face the irritating sounds? As we remember, influence of noise on health depends on its frequency and intensity. Our acoustical perception makes about 130 dB. Any sounds rate above this norm are capable to cause ear pain, and at 140 dB can provoke violations of the hearing aid. Noise by rate 160-165db within several minutes will lead to death of animals, and the intensity in 190 dB is capable to pull out metal rivets from building constructions.
Influence of noise on a human body, first of all, is reflected in our cardiovascular system – noise is capable to change heart rate and to raise or lower arterial blood pressure. Frequency of influence and noise levels directly affect incidence of the central nervous system. Also accommodation in city conditions of 10 and more years results in risk of developing of a hypertension and ischemia of heart. Continuous impact of noise can become the reason even of such diseases as gastritis and an ulcer as the irritation various sounds is capable to break motor and sekretorny functions of a stomach.
It is especially important to pay attention to influence of noise to an organism of children. Many parents are sure that various noise do not affect kids and teenagers. This deep delusion. We will refer to several facts as the proof:
- children who are exposed to systematic noise influence with power from 68 dB and more risk to receive violations of the autonomic nervous system. Such as acceleration of reaction of a metabolism, deterioration in blood supply of an integument and strengthening of tension of muscles;
- teenagers who the most part of time are under noise influence lose concentration of attention much quicker and do not cope with the solution of tasks on development of thinking;
- at impact of noise during the day, children are tired quicker, become inattentive, hardly can concentrate and have difficulties when training in reading. The reason of it is that noise blocks the "internal" speech of the child.
Influence of noise on efficiency of the person
The negative impact of noise is not limited to diseases of organs of hearing, nervous and cardiovascular systems. Recently the issue as noise became topical influences the working person. At many enterprises the regulations on intensity of noise from devices, machines and various devices are not for nothing entered. Work in the noisy place is equated to risk conditions for health. As showed researches, in places with the raised noise background, the labor productivity falls for 10%, and the incidence, on the contrary increases by 37%. In this regard employers need to think that it is better for employees – to organize comfortable working conditions, or to constantly pay sick notes.
Admissible it is possible to consider only that noise level which does not affect health in any way and does not influence hearing and an organism in general. It is possible to protect himself from excessive influence of the irritating sounds by means of installation of sound insulation of the house. If you are irritated by noise in a workplace, surely report about it to the management.
"