Noise pollution is a major problem in the modern industrialized world. A noisy environment is difficult to work in and possess a health risk as well. Proper environmental noise control is needed to better the acoustic environment. Persons who work in noisy industrial areas should undergo regular medical check-ups to ensure that they have not suffered from hearing impairment.
There are many sources of this type of pollution other than the industrial sources. The commonest causes include architecture, the transport industry and urban planning. Air and road traffic are considered the biggest sources of pollution worldwide. Some sources are fairly easy to bring under control while others are a major challenge.
To address indoor sound levels, multiple techniques have been applied including design of party walls, exterior walls, and ceiling and floor assemblies. Special purpose rooms such as auditoria, social halls, recording and dining areas emit sound which can be controlled by putting up sound baffles or absorbers. As opposed to sound proofing, sound masking entails actively adding sounds to reduce the disturbance of certain other 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.
A number of finishes and materials can be employed in ceiling panels and acoustic walls. A good panel is one that does not interfere with the substrate. Fabric covers are used for effective maximum absorption. The covers may be modified into sound blankets or curtains that are used to cover surfaces or noisy equipment. Moreover, windows that are thicker or double glazed may also serve the same purpose.
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.
A properly organised environmental noise control framework is required in virtually all public places. The methods chosen for this are variable but will fall in any of the following categories: vibration dumping, vibration isolation, absorption or sound isolation. In general, sound isolation is the use of barriers to impede transmission. Damping involves extraction of vibration energy from various media and dissipating it as heat.
There are many sources of this type of pollution other than the industrial sources. The commonest causes include architecture, the transport industry and urban planning. Air and road traffic are considered the biggest sources of pollution worldwide. Some sources are fairly easy to bring under control while others are a major challenge.
To address indoor sound levels, multiple techniques have been applied including design of party walls, exterior walls, and ceiling and floor assemblies. Special purpose rooms such as auditoria, social halls, recording and dining areas emit sound which can be controlled by putting up sound baffles or absorbers. As opposed to sound proofing, sound masking entails actively adding sounds to reduce the disturbance of certain other 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.
A number of finishes and materials can be employed in ceiling panels and acoustic walls. A good panel is one that does not interfere with the substrate. Fabric covers are used for effective maximum absorption. The covers may be modified into sound blankets or curtains that are used to cover surfaces or noisy equipment. Moreover, windows that are thicker or double glazed may also serve the same purpose.
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.
A properly organised environmental noise control framework is required in virtually all public places. The methods chosen for this are variable but will fall in any of the following categories: vibration dumping, vibration isolation, absorption or sound isolation. In general, sound isolation is the use of barriers to impede transmission. Damping involves extraction of vibration energy from various media and dissipating it as heat.
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