If the distance from the source is doubled or increased by a factor of 2, then the intensity is quartered decreased by a factor of 4.
What is the intensity of sound wave?
A sound wave's intensity is inversely related to density and speed and proportionate to the change in pressure squared.
The region that the sound waves cover grows as one gets farther from the source of the sound. The intensity and loudness of the sound are reduced because the same quantity of energy is dispersed over a larger region.
Inversely proportional to the square of the source's distance, the intensity varies.
Therefore, if the distance from the source is doubled or multiplied by a factor of 2, the intensity is reduced by a factor of 4 and then by a fourth.
When a time difference is twice, intensity is reduced by a factor of 4 each time.
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