A commonly used porous sound absorber is
A) gypsum board.
B) oriented strandboard.
C) aluminum foil.
D) fiberglass.
E) microperforated plastic.
Correct Answer:
Verified
Q8: The noise- reduction coefficient (NRC)of a material
Q9: A sound barrier with an STC of
Q10: A resilient clip consists of a small
Q11: A resilient channel is used to attenuate
Q12: For a party wall between two dwelling
Q14: Sound that is audible to human beings
Q15: The sound created by human speech is
A)structure-
Q16: Cycles per second is also called a
A)hulen.
B)pascal.
C)newton.
D)hertz.
E)none
Q17: The NRC of a material lies between
A)0
Q18: The wavelength of sound at a frequency
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