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4. Riots
5. Wars
6. Crackers
7. Procession and celebrations
8. Religious activity
(a) Prayers using loudspeakers
(b) Processions
Natural sources of high-level noise include but not restricted to
1. Water fall
2. Wind
3. Wild life
4. Rain
5. Sea breeze
6. Natural disasters
(a) Earthquake
(b) Landslide
(c) Flood
(d) Tsunami
(e) Cyclone
(f) Hurricane
Noise pollution is an environmental nuisance and stressor. It affects both the
auditory and non-auditory health (Smith and Broadbent 1992). It modifies social
behaviour, interferes in complex task performance and causes irritation.
Studies have suggested an association between noise pollution and hypertension,
but community studies have shown weak relationships between noise and cardiovascular ailment. Aircraft and road traffic noise pollution are linked with psychological symptoms but not with clinically defined psychiatric disorder. Studies
revealed noise exposures are related to increased catecholamine secretion.
Prolonged aircraft noise exposure harms long-term memory, as well as reading
comprehension in children, and may be related with raised blood pressure (Stansfeld
and Matheson 2003).
In human beings, high noise levels can contribute to the following (Münzel et al.
2018; Hoffmann et al. 2006, WHO 2018; NIDCD 2018):
1. Annoyance
2. Cardiovascular disease
3. Cognitive impairment among children
4. Coronary artery disease
5. Noise induced hearing loss
6. Sleep disturbance
7. Stress-related mental health risks
7 Noise Pollution