A sound barrier with an STC of 50 will generally
A)not block music but will block speech sufficiently to be heard only by a curious listener.
B)block all speech and music, however loud.
C)block loud speech but not loud music.
D)block loud music but not loud speech.

Question

Quizplus · Accepted Answer

An STC rating of 50 indicates that the sound barrier can block sound transmission of speech and other common noise sources at a moderate level. It may not completely block music, but it will significantly reduce its volume and make it inaudible to some extent. Therefore, option A is the best choice.

A Sound Barrier with an STC of 50 Will Generally