Posts
Noise can simply be described as unwanted or annoying sound. Significantly high noise levels negatively impact on the human population both emotionally and physically. A noisy environment is not only difficult to work in but poses a significant health risk as well. Persons that work in such environments need to undergo regular medical check-ups so that they can be screened for hearing impairment. The main purpose of environmental noise control is to make the acoustic environment better.
There are numerous other sources of this kind of pollution other than manufacturing industries. They include, among others, architecture, transport and urban planning. The most stubborn causes of pollution in this context worldwide are aircraft and road traffic. While some sources of pollution are fairly easy to control others like human social activities present a major challenge.
Different methods have been used to manage interior sound levels. These include party wall designs, exterior walls, and floor and ceiling assemblies. Rooms designed for specific purposes like entertainment halls, recording rooms and auditoria generate sound which can be contained by constructing sound absorbers or baffles. Sound masking as opposed to proofing refers to active addition of sounds to minimize the perception unwanted sounds.
A long term plan for managing traffic related pollution is the use of hybrid vehicles. To realise an appreciable amount of positive impact in the streets, introduction of hybrid vehicles will need to achieve about 50 percent of market share. Abating noise at source level can be attained by providing better designs of tire treads and improved shielding diesel stacks. The least sound is emitted by vehicles moving at minimum speed of 30 kilometres per hour, therefore, speed restriction can also be an effective technique.
As in road traffic management, little has been affected in the aircraft sector, other than elimination of loud engine designs. A promising form of aircraft improvement is flight restriction. This can take the form of departure flight path, preferred runway use and time of day restrictions. This is however questionable because it negatively impacts on flying convenience, aircraft safety and economics.
Several materials have been incorporated into buildings to improve the acoustic properties. Panels made of steel are usually fitted into walls. Good panels are those that have very little interference with the substrates. Fabric covers are usually used in a number of buildings to improve absorption. The fabrics are made into sound curtains or blankets that are fitted onto surfaces or noisy equipment.
Industrial equipment can be designed in such a manner as to produce minimum noise possible, for the health benefit of workers. Also, special equipment including shock mounting source equipment, solid barriers and ear protection equipment can be used by workers. Office workers can look out for quieter office equipment such as photocopiers and printers as simple solutions for more conventional office environments.
Well planned environmental noise control can eliminate a key component of industrial, recreational or road traffic impact on the surrounding environment. Summarily, the available techniques include sound insulation, absorption, vibration, damping and isolation. Sound insulation introduces a mass barrier to prevent sound transmission. Damping works by extracting vibration energy and dissipating as heat from the thin sheet.
There are numerous other sources of this kind of pollution other than manufacturing industries. They include, among others, architecture, transport and urban planning. The most stubborn causes of pollution in this context worldwide are aircraft and road traffic. While some sources of pollution are fairly easy to control others like human social activities present a major challenge.
Different methods have been used to manage interior sound levels. These include party wall designs, exterior walls, and floor and ceiling assemblies. Rooms designed for specific purposes like entertainment halls, recording rooms and auditoria generate sound which can be contained by constructing sound absorbers or baffles. Sound masking as opposed to proofing refers to active addition of sounds to minimize the perception unwanted sounds.
A long term plan for managing traffic related pollution is the use of hybrid vehicles. To realise an appreciable amount of positive impact in the streets, introduction of hybrid vehicles will need to achieve about 50 percent of market share. Abating noise at source level can be attained by providing better designs of tire treads and improved shielding diesel stacks. The least sound is emitted by vehicles moving at minimum speed of 30 kilometres per hour, therefore, speed restriction can also be an effective technique.
As in road traffic management, little has been affected in the aircraft sector, other than elimination of loud engine designs. A promising form of aircraft improvement is flight restriction. This can take the form of departure flight path, preferred runway use and time of day restrictions. This is however questionable because it negatively impacts on flying convenience, aircraft safety and economics.
Several materials have been incorporated into buildings to improve the acoustic properties. Panels made of steel are usually fitted into walls. Good panels are those that have very little interference with the substrates. Fabric covers are usually used in a number of buildings to improve absorption. The fabrics are made into sound curtains or blankets that are fitted onto surfaces or noisy equipment.
Industrial equipment can be designed in such a manner as to produce minimum noise possible, for the health benefit of workers. Also, special equipment including shock mounting source equipment, solid barriers and ear protection equipment can be used by workers. Office workers can look out for quieter office equipment such as photocopiers and printers as simple solutions for more conventional office environments.
Well planned environmental noise control can eliminate a key component of industrial, recreational or road traffic impact on the surrounding environment. Summarily, the available techniques include sound insulation, absorption, vibration, damping and isolation. Sound insulation introduces a mass barrier to prevent sound transmission. Damping works by extracting vibration energy and dissipating as heat from the thin sheet.
About the Author:
Read more about General Principles On Environmental Noise Control visiting our website.
No comments:
Post a Comment