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Defining Noise
- Noise is commonly defined as unwanted sound.
- Les Blomberg suggests a better definition: sound harming well-being or interfering with activities.
Origins of Noise Pollution
- Noise pollution increased with the rise of internal combustion engines in the early 20th century.
- This includes vehicles, motorcycles, and later, jet engines and lawn equipment.
Measuring Noise Pollution
- Noise pollution is measured in decibels above natural levels.
- A 3-decibel increase doubles the sound energy, halving the listening area.