Noise Pollution
Noise is defined as unwanted or disturbing sound that negatively impacts health and well-being. Measuring noise is crucial for assessing its impacts, with various instruments used, including sound level meters. Noise pollution is categorized into types, effects, and control methods, emphasizing the need for effective noise management for public health.
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What we have learnt
- Noise is defined as unwanted sound affecting human health.
- Noise pollution can lead to various health issues, including hearing loss and stress.
- Effective noise control measures target sources, paths, and receivers to minimize exposure.
Key Concepts
- -- Decibels (dB)
- The unit of measurement for sound intensity, where sounds above 65dB are considered noise pollution.
- -- Sound Level Meter (SLM)
- An instrument used to measure sound pressure levels, usually in decibels.
- -- Active Noise Control (ANC)
- A technique that uses anti-phase sound waves to cancel out harmful noise.
- -- Noise Dosimeter
- A device worn by individuals to measure their personal exposure to noise levels.
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