Many recent studies have revealed that exposure to environmental noise above the prescribed standards limits have many adverse effects. It enhances the risk of hypertension, ischaemic heart diseases, hearing losses and sleep disorder. Also, it pessimistically influences efficiency and social behavior of a person. Recently, an NGO Chetna filed a case in the Delhi High Court seeking intervention to bring down the noise levels caused due to aircraft engines during landing at the Delhi airport. The extremely high noise levels are causing serious health problems to the residents of the nearby localities. Recognizing in noise pollution a serious hazard to health and efficiency as well as a source of increasing complaints from the public, the measurements of noise levels across Delhi becomes an important study. Based on the analysis of measured data, appropriate measures leading to avoidance, prevention, and reduction of environmental noise can be taken. It will help in bringing eco-friendly environment to the society.
The main objectives of the present studies are as follows:
• To measure the noise levels in Delhi
• To compare the measured noise levels with Standard norms
• To identify the significant sources of noise and suggest remedies to reduce the noise levels
• To create public awareness and educating them
• To facilitate the planners and policy makers in taking appropriate decisions
Methodology and Equipment
For measuring the sound levels, Delhi region will be categorized into Residential, Commercial, Industrial, Silent and zones near the airport. The locations will be selected so as to cover all the zones. The measurements will be done in the month of September/October during peak, non-peak and night hours.
The equipment used consists of a sound level meter and a data acquisition system, LabQuest. LabQuest is a stand-alone data collection and analysis device, controlled by the color touch screen and the keys on the front panel. The Sound Level Meter measures sound level in decibels. The measurement range is from 35 to 130 dB with time weighting, frequency weighting and maximum level hold functions. It can be connected to LabQuest through its sensor port. The data recorded by the sound level meter can be stored online into LabQuest for later analysis.
A copy of the full paper has not yet been submitted.