Sound Intensity


Sound intensity is the amount of sound energy that passes through a unit area of a specified surface in a specified time. In aviation, sound intensity is an important factor in measuring the noise level produced by aircraft engines. The intensity of sound is measured in decibels (dB) and is directly proportional to the logarithm of the sound pressure. The higher the sound intensity, the louder the sound. The measurement of sound intensity is crucial in determining the noise level of aircraft during takeoff, landing, and flight. This information is used to develop noise abatement procedures and to design quieter aircraft engines.


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