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A noise source produces sound mainly at 2500 Hz and an SPL of 95 dB at...

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Mechanical Engineering

A noise source produces sound mainly at 2500 Hz and an SPL of 95dB at the location of a worker. In order to decrease this worker’snoise exposure, the employer decides to build a brick wall (? = 400kg/m2) between source and worker. What would the sound level at theworker’s location be after the wall is built. Assume that the wallis perfect and that the sound must go through it (not aroundit).

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