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Which of the following is not an acoustical defect?(a) Reverberation(b) Formation of echoes(c) Absorption(d) Sound fociThe question was posed to me at a job interview.My question is from Common Acoustical Defects topic in chapter Acoustics and Ventilation of Construction & Building Materials

Answer»

The correct CHOICE is (c) Absorption

The BEST explanation: Some of the common acoustical DEFECTS are reverberation, the formation of echoes, exterior noise and sound foci. Absorption is the property of the sound wave by which a part of its energy is absorbed by FRICTION when it strikes a surface.



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