5 Questions
What does a higher STC number indicate?
More effective sound insulation
What does STC stand for?
Sound Transmission Class
Which type of noise is the STC useful for evaluating annoyance?
Speech sounds
What are the two most basic principles to improve the sound transmission class of a partition?
Adding mass and increasing overall thickness
What does the ISO Sound Reduction Index (SRI) measure outside the US?
Airborne sound attenuation
Test your knowledge of sound transmission and building partition ratings with this quiz on Sound Transmission Class (STC) and ISO Sound Reduction Index (SRI). Learn about the factors that affect airborne sound attenuation and understand the significance of STC ratings in interior partitions, ceilings, floors, doors, windows, and exterior wall configurations.
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