Which statement best describes noise?

Which statement best describes noise?

• A. Noise is any loud sound that is enjoyable
• B. Noise is any unwanted sound that adversely affects the human body
• C. Noise is always dangerous
• D. Noise is a single-frequency tone

Answer: (B)

Noise is best described as unwanted sound that can have adverse effects on human health. In occupational hygiene, the focus isn’t on loudness alone but on whether the sound is unwanted and potentially harmful to people. This explains why noise isn’t simply “loud” or always dangerous, and why a tone that is unwanted, bothersome, or capable of causing health effects over time is considered noise. A single-frequency tone isn’t noise, since noise is typically broad-spectrum and doesn't have a single pitch. An enjoyable loud sound isn’t noise by definition because context and perception matter. The key idea is that noise is unwanted and has the potential to harm the body.

Noise is best described as unwanted sound that can have adverse effects on human health. In occupational hygiene, the focus isn’t on loudness alone but on whether the sound is unwanted and potentially harmful to people. This explains why noise isn’t simply “loud” or always dangerous, and why a tone that is unwanted, bothersome, or capable of causing health effects over time is considered noise. A single-frequency tone isn’t noise, since noise is typically broad-spectrum and doesn't have a single pitch. An enjoyable loud sound isn’t noise by definition because context and perception matter. The key idea is that noise is unwanted and has the potential to harm the body.