Which of the following is not a property of good acoustic materials?(a) They have a low coefficient of absorption(b) They are comparatively cheap(c) They are durable(d) They are efficient over a wide frequency rangeThis question was posed to me in an internship interview.I need to ask this question from Common Acoustical Defects in section Acoustics and Ventilation of Construction & Building Materials

Which of the following is not a property of good acoustic materials?(a

1.	Which of the following is not a property of good acoustic materials?(a) They have a low coefficient of absorption(b) They are comparatively cheap(c) They are durable(d) They are efficient over a wide frequency rangeThis question was posed to me in an internship interview.I need to ask this question from Common Acoustical Defects in section Acoustics and Ventilation of Construction & Building Materials
Answer» Correct answer is (a) They have a LOW coefficient of ABSORPTION For EXPLANATION I would say: GOOD acoustic materials are comparatively cheap and DURABLE. They have a high coefficient of absorption and are efficient over a wide frequency range.

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