REHS Exam – Noise questions and answers graded A+ LATEST
UPDATED
1. Sound Amplitude:
loudness
Frequency: pitch
Time pattern
Loses energy as it travels
2. Noise unwanted sound
3. Noise pollution noise that has characteristics and duration injurious to public health &
welfare
-unreasonably interferes with life and property
4. Decibel express intensity of sound
5. Noise level measurement in dBA by sound meter
6. dB scales dBA: loudness in normal situations
dBC: loudness in noisy
situations dBD: ettect of
airplane noise
7. Combining 2 ditterence between sound
sound
level 0 ditterence: add 3
sources
>10 ditterence: insignificant
8. Noise dosimeter measures amount of potentially injurious noise exposure over time
9. Noise control 1. Source
2. Transmission path
3. Where received
drops 6dB each time distance from source to received is doubled
1/
3
UPDATED
1. Sound Amplitude:
loudness
Frequency: pitch
Time pattern
Loses energy as it travels
2. Noise unwanted sound
3. Noise pollution noise that has characteristics and duration injurious to public health &
welfare
-unreasonably interferes with life and property
4. Decibel express intensity of sound
5. Noise level measurement in dBA by sound meter
6. dB scales dBA: loudness in normal situations
dBC: loudness in noisy
situations dBD: ettect of
airplane noise
7. Combining 2 ditterence between sound
sound
level 0 ditterence: add 3
sources
>10 ditterence: insignificant
8. Noise dosimeter measures amount of potentially injurious noise exposure over time
9. Noise control 1. Source
2. Transmission path
3. Where received
drops 6dB each time distance from source to received is doubled
1/
3
