Speaker Decibel Change Calculator
This calculator requires the use of Javascript enabled and capable browsers. This calculator is designed to give the amount of change, attenuation or gain, in decibels, you can expect with a change in receiver distance. Enter the data and click on calculate. As an example of anticipated data, if you were standing 10 feet from a noise source, and were to move to a location 100 feet away from that same sound source, you would expect to see a calculated drop in level of about 20dB. Sound that is projected from a given source drops in level at about 6dB with each doubling of the initial distance. Temperature and surrounding conditions, natural and man-made, all have an effect. If you start at 50 feet from the source and move to 100 feet from the source, there will be about a 6dB drop in level. If you move from 500 feet to 1000 feet, you will also have roughly a 6dB drop in level. You may use feet, meters or any designation of measure so long as it is consistent.
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