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Questions and Answers
What does the Sound Transmission Class (STC) measure?
What does the Sound Transmission Class (STC) measure?
- The level of annoyance due to low-frequency noise
- The level of annoyance due to music
- The level of annoyance due to speech sounds (correct)
- The level of annoyance due to machinery noise
What is the ISO equivalent of the STC in the US?
What is the ISO equivalent of the STC in the US?
- Sound Reduction Class (SRC)
- Sound Reduction Index (SRI) (correct)
- Noise Reduction Coefficient (NRC)
- Noise Attenuation Factor (NAF)
What are the two most basic principles for improving the sound transmission class of a partition?
What are the two most basic principles for improving the sound transmission class of a partition?
- Increasing the overall thickness and decreasing mass
- Decreasing the overall thickness and mass
- Increasing the overall thickness and adding insulation
- Adding mass and increasing the overall thickness (correct)
What does a higher Sound Transmission Class (STC) number indicate?
What does a higher Sound Transmission Class (STC) number indicate?
How does the sound transmission class of a double wythe wall compare to a single wall with equivalent mass?
How does the sound transmission class of a double wythe wall compare to a single wall with equivalent mass?
What is the range of frequencies that elicit an auditory percept in humans?
What is the range of frequencies that elicit an auditory percept in humans?
What are sound waves above 20 kHz known as?
What are sound waves above 20 kHz known as?
What is the interdisciplinary science that deals with the study of mechanical waves in gasses, liquids, and solids?
What is the interdisciplinary science that deals with the study of mechanical waves in gasses, liquids, and solids?
What is the application of acoustics that deals with the recording, manipulation, mixing, and reproduction of sound?
What is the application of acoustics that deals with the recording, manipulation, mixing, and reproduction of sound?
What is the term for sound waves below 20 Hz?
What is the term for sound waves below 20 Hz?
