Consider the following questions:
1. Describe differences between sound power, sound intensity, and sound pressure.
2. What range of frequencies can humans hear? What range of frequencies do humans hear best?
3. Identify the primary sources of environmental noise.
4. What reference pressure is used in determining sound pressure levels?
5. Describe the relationship between sound pressure and distance from a source. If the distance is doubled, what is the difference in sound pressure levels in decibels?
6. What are weighting scales? Why are they used?
7. Most environmental noise measurements are made using a Type II meter. What is a Type II meter?
8. If you are exposed to two sound sources of 83 dBA each, what is your actual exposure in decibels?
9. How is loudness related to sound energy?