Q7. A 2m X 2m X 2m enclosure is constructed around a small compressor. The enclosure is made of a lightweight metal with a transmission loss of 26 dB at 500 Hz. The average absorption coefficient in the enclosure is 0.3 in the 500 Hz octave frequency band. The compressor generates a sound power level of 105 dB in the 500 Hz octave band. Calculate the A-weighted sound power level radiated by the exterior of the enclosure. Assume the interior of the enclosure is diffuse. (Answer : 84.7 dB(A))
Q7. A 2m X 2m X 2m enclosure is constructed around a small compressor. The enclosure is made of a lightweight metal with a transmission loss of 26 dB at 500 Hz. The average absorption coefficient in the enclosure is 0.3 in the 500 Hz octave frequency band. The compressor generates a sound power level of 105 dB in the 500 Hz octave band. Calculate the A-weighted sound power level radiated by the exterior of the enclosure. Assume the interior of the enclosure is diffuse. (Answer : 84.7 dB(A))
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Transcribed Image Text:Q7. A 2m X 2m X 2m enclosure is constructed around a small compressor. The enclosure is
made of a lightweight metal with a transmission loss of 26 dB at 500 Hz. The average
absorption coefficient in the enclosure is 0.3 in the 500 Hz octave frequency band. The
compressor generates a sound power level of 105 dB in the 500 Hz octave band. Calculate the
A-weighted sound power level radiated by the exterior of the enclosure. Assume the interior of
the enclosure is diffuse.
(Answer : 84.7 dB(A))
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