What is noise? Types of noise and noise levels

Few people know that such a noise is actually and why it must be fought with. Each of us encountered loud annoying sounds, but no one thought about how they affect the human body. In this article we will analyze the noise and its varieties. In addition, we will discuss how loud sounds affect our body.

Classification of noise

Perhaps, everyone who lives in an apartment building knows firsthand what a noise is. It can be the sound of a puncher, the howl of a neighbor's dog, and many other factors. So what exactly is called noise? It is impossible to give a clear definition. Noise is usually called annoying, disturbing sounds that cause irritation in a certain person.

In fact, noise is, first of all, sound. Let's take a closer look at what kinds it is.

Varieties of noise. Shock sounds

Few people know what kinds of sounds exist and what is air noise. However, it is important to know everyone to understand exactly how to cope with a particular species. There are three types of noise:

• air;
• shock;
• structural.

Shock noise occurs as a result of mechanical influence. It reaches our ears by overlapping. For example, from floor to wall and from wall to hearing aid. Such a noise can be the steps of a neighbor a floor above or jumping of his child.

Air and structural noise

What is air noise is known to every resident of an apartment building. If you can not sleep, because your neighbor likes to watch TV loudly at night or listen to the radio, then you are faced with this kind of noise. As you may have guessed, sound waves in this case are transmitted through the air, and, unfortunately, it is almost impossible to get rid of them.

To the structural noise can be attributed sound of a neighboring perforator. Such noise occurs as a result of the interaction of the source and the structure and spreads over a large distance.

Effect of noise on the human body

High-frequency sounds have daily negative effects on human health and household appliances. Few people know how noise affects our body and what is the signal-to-noise ratio. Some calmly refer to the noise, while in others it causes discontent. A huge role is played by the nature of high-frequency sounds and their periodicity.

Noise has a negative effect on absolutely any living organism. Due to the interaction with it, a person can develop diseases of the cardiovascular and nervous system. When a hearing aid perceives a high-frequency sound, a person's pulse, blood pressure changes and blood circulation worsens.

Scientists have proved that a person who is under constant influence of noise, has a risk of encountering diseases of the auricle.

What is the signal to noise ratio?

As we said earlier, high-frequency sounds adversely affect not only the human body, but also electronic devices. Few people know, but high sound waves can cause poor phone communication or the Internet. To understand why this happens, let's look at what this signal-to-noise ratio is, in more detail.

The signal-to-noise ratio (often referred to as S / N or SNR) sets the transmit power of the data signal. In the event that the sound level on the channel is high enough, this can cause a decrease in the speed of the Internet or the quality of communication.

Few people know why the plane is forbidden to use mobile phones. This is due precisely to the interaction of sound and signal. A working mobile phone can generate unnecessary noise, which provokes the inoperability of the aircraft. The means of communication can cause a plane crash. We recommend always to turn off the gadgets on board the aircraft, so as not to endanger your life.

The difference between sound, noise and vibration

Not everyone understands what sound and noise is. As the statistics showed, almost every second inhabitant of our planet believes that this is the same thing. Is it so?

Calling sound is absolutely everything that our hearing aid recognizes. Noise is the sound vibrations that bring discomfort to one person or group of people. It can include all the annoying sounds, such as, for example, barking a dog, ticking the clock and clicking with a pen.

We have already sorted out the classification of sound, but what is noise and vibration? What is their difference? Perhaps, vibration is the most mysterious sound. It can be felt only when it comes into contact with a vibrating object. Such a sound causes irritation of nerve impulses. Vibration can provoke a deterioration in the general condition of a person.

White and industrial noise

Perhaps, every worker of a large industrial plant knows what is the production noise. This is a set of very diverse sounds that negatively affect the human body. Its frequency is over 400 Hz. Production sounds can provoke a variety of diseases, among which there is a noise illness. Scientists have proved that every second employee of an industrial enterprise has problems with the cardiovascular system and a hearing aid.

We have already found out that high-frequency sounds bring us not only discomfort, but also health problems. Can they benefit? Does everyone know what white noise is?

White noise is a sound in which the waves are evenly distributed. It can be quite diverse. To it it is possible to carry a sound of the working vacuum cleaner, the hair drier or water which flows from the crane. Recently, many mothers in all corners of the world use white noise to calm the child. It's amazing, but it really works. In case your child falls asleep badly and constantly fusses, then turn on the noise of the waterfall. This sound restores the nervous system. You will be surprised, but the child will immediately calm down and fall asleep.

Noise level

We have already found out what noise is and what kinds it is. To date, a large number of people live in apartment buildings. Every day, each of them encounters various extraneous sounds. Everyone knows that there is a bill that prohibits exceeding the permissible sound level in different regions after 22 and 23 pm. In case of failure to comply with the law, the offender will be obliged to pay a fine. Does everyone know what is the noise level and what is its permissible norm?

According to the law, the permissible noise rate in the evening is 40 dB. Most people are worried about what to do if neighbors are making noise in the daytime. Unfortunately, the daytime sound level is not set. In the event that you do not like the loud neighbor TV that he watches during the day, you will only have to accept it.

What is noise, not by hearsay, "newly-made" moms. The level of baby crying is 70-80 dB. Not sweet and motorists. The sound level of the beep is usually more than 100 dB. By the way, a noise of more than 200 dB can provoke an interruption of the membranes.

Long exposure to noise. Prevention of ear diseases

As we said earlier, the long-term effect of noise negatively affects the human body. With constant interaction with high-frequency sound waves, the tympanic membrane weakens and can burst. In some cases, it can be restored, but this will require a lot of time and effort.

Another serious disease that arises from high-frequency waves is a noise disease. It is characterized by a decrease in hearing. Its initial signs are ringing and sharp pain in the ears, chronic fatigue and constant headaches. In case you have found yourself such signs, it is strongly recommended to immediately contact a specialist. The earlier you do this, the fewer chances are that in time you will have complete or partial deafness. Usually patients go to a doctor late and so the noise sickness does not respond to treatment. Only in some cases specialists are able to restore at least half of the auditory capabilities.

To protect yourself, in case of constant contact with noise, you need to undergo an annual physical examination with a specialist. This will not only detect the problem, but also cope with it without consequences. To be less prone to high-frequency sounds, it is necessary to wear anti-noise. The most common form is earplugs.

In case you are working in industrial production, where the noise level usually exceeds 90 dB, it is recommended to purchase high-noise anti-noise. Thanks to them you will be able to secure your hearing aid and not face its diseases. If you live in an apartment building and your neighbors like to make noise, then we recommend to install soundproofing. With it, you will forever forget about the existence of a neighbor TV.

Let's sum up the results

Each of us knows what constant noise is. Unfortunately, we face them daily and to protect ourselves from them is almost impossible. In this article we found out their varieties, and also how they affect our body. We recommend avoiding high-frequency sound waves, and in case you are working in an environment of constant noise - use anti-noise. Be healthy!