Noise-canceling headphones: GOST, types, features

Noisy headphones are a means of individual hearing protection. They are designed for use during work, sleep, rest, listening to music. Their main application is hearing protection in the workplace, accompanied by noise, the level of which is a threat to human health. These devices are used in the first place:

• On construction sites;
• In the mining industry;
• In repair shops;
• In the metallurgical industry;
• In mechanical engineering;
• In any production, where a person is forced to stay close to objects creating a high level of noise for a long time.

There are special types of protective helmets compatible with noisy headphones.

GOST requirements for the construction and materials of protective headphones

An obligatory component of the equipment of workers with a heightened level of danger to the hearing organs of a person are the anti-noise headphones. GOST R 12.4.210-99 contains general technical requirements for this device, which must be observed by the system. Requirements for materials and construction of hearing protection:

1. Headphones should be made of materials that exclude the possibility of allergic or other undesirable reactions, including mechanical damage to human skin.
2. The structural details should be rounded, without sharp edges and should not have external damages.
3. The replacement of shock absorbers or liners should not require special tools.

General requirements of GOST

Noise-protection headphones, first of all, should correspond to the parameters of a certain size - S, M, L. To monitor compliance with this condition, there are special mock-ups of the head of a person of the appropriate size. With their help, the range of adjustment of the cup holders and the distance between the ambushurs is checked.

According to GOST:

• The maximum allowable pressure of the headband is 14 H;
• Headphone ambushura should fit tightly, without any gaps, to the mock-up for testing;
• The maximum permissible shock absorber pressure is 4500 Pa;
• When the headphones fall, they should not fall off or crack;
• If the shock absorbers are filled with liquid, do not leak;
• Headphones should not easily be exposed to fire;
• The device must provide a minimum level of noise absorption.

Noise protection headphones

Headphones are noisy, as usual, consist of headband and ambyushur. Protective devices for hearing protection may have a headband:

• Standard:
• With fastening on the helmet;
• Cervical (occipital);
• Folding.

The standard headband has the shape of an arc that is familiar to any headphone and is worn over the head or helmet. The occipital or cervical headband covers the head from behind. The headband with the helmet mount consists of two half-arches and is fixed not on top of the helmet, but on both sides, above the ear shells. The foldable headband makes the headphones compact when folded, which is convenient for storage.

The noise-absorbing properties of hearing protection devices are provided by the properties of the ambushur materials and the design of the headphones, which creates the closest fit to the ear shells.

Headphones for work at the production of SOMZ

The Suksun Optical and Mechanical Plant (ROSOMZ) specializes in the production of personal protective equipment for the head, eyes, face, hearing and respiratory organs. In the range of its products, a whole range of devices for hearing protection. One of the examples is the anti-noise headphones SOMZ 1. They are designed to protect against noise of an average level for all industries, including metallurgical and machine building. High-quality cup material and sound-absorbing inserts provide a noise absorption level of 27 dB. Such a level allows effectively suppressing the sounds of working equipment and other noises that pose a danger to human health, but speech and danger signals are not muffled.

All headphones antinoise SOMZ have a well thought-out design, adjustable headband height, ensuring a close fit to the head. The material from which the shock absorbers are made retains its shape for the entire service life. A small weight and comfortable headband contribute to the comfortable wearing of the product all work shift. In the line of anti-noise headphones SOMZ there are models with a microphone, radio, an increased level of noise absorption (cope with noise up to 115 dB).

Individual hearing protection from 3M

Manufacturing company 3M is engaged in the manufacture of electrical products for a wide range of human activities. In the product range of this company there are products for individual hearing protection in the workplace. Among the products in this area are 3M anti-noise headphones. Almost all models of headphones of this brand are presented with several variants of registration of a headband. A wide choice of modifications of hearing protection 3M allows you to choose the right device for any working conditions. Including many models of headphones 3M have options for use in places where, in addition to noise absorption, increased visibility (airports, road construction, etc.) is required.

SACLA EARLINE - Hearing Protection

SACLA is a well-known French manufacturer of personal protective equipment, producing under the brand name EARLINE various types of products for the head, face and hearing organs. These include noisy MAX 400 headphones. Among them are compact models with a collapsible headband and modifications compatible with the holder of the face shield and helmet. The level of noise absorption makes it possible to use headphones of this brand in production with low noise level. As a material for the headband, ABS plastic is used , ambuschures are made of foamed polyurethane (rubber and rubber substitute).

On the protection of sleep

Antinoise headphones for sleep - a good alternative where you usually use ear plugs. Do not always want to just disconnect from the environment. Many like to sleep before listening to quiet music or recording sounds of nature. In this case, and suitable special soft headphones designed for sleep, or sliphons. They provide a high level of noise insulation, as well as ear plugs, but they are not inserted into the ears, but snug against them. Antinoise headphones for sleep have a flat shape and are made of elastic materials, and therefore do not interfere with comfortable rest. Most often in form they resemble an ordinary bandage on the head. The familiar ambushuras of such devices are hidden in a "case" made of cloth. Antinoise headphones for sleep can be wired and wireless. The latter work with Bluetooth-enabled devices.