The Sindh Environmental Protection Agency is launching a study on Thursday to measure noise levels at various city spots, it has been learnt.

According to sources, the study, second in more than a decade and a half, will be carried out at different places at different times so that the level of noise pollution could be recorded.

The sources said longer exposure to a high level of noise affected human health, causing a loss of hearing, stress, etc, which in turn lowered the level of tolerance in people owing to which they tended to lose temper at the slightest of provocation.