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Sound Power Level, Lw is measured as the total acoustic power emitted by a source in all directions (does not change with the environment) to a reference value that is typically 10-12 W. Estimate the sound power level of a siren that emits 2 x T × U watts and justify your answer based on the noise level chart.

Sound Power Level, Lw is measured as the total acoustic power emitted by a source in all directions (does not change with the environment) to a reference value that is typically 10-12 W. Estimate the sound power level of a siren that emits 2 x T × U watts and justify your answer based on the noise level chart.

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T= 9

U = 2 

(b) Sound Power Level, Lw is measured as the total acoustic power emitted by a source in all directions (does not change with the environment) to a reference value that is typically 10-12 W. Estimate the sound power level of a siren that emits 2 x T × U watts and justify your answer based on the noise level chart.
Transcribed Image Text:(b) Sound Power Level, Lw is measured as the total acoustic power emitted by a source in all directions (does not change with the environment) to a reference value that is typically 10-12 W. Estimate the sound power level of a siren that emits 2 x T × U watts and justify your answer based on the noise level chart.
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