Scroll down to related links and look at "Damping of Air of High Frequencies (Dissipation)".
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Pythagoras invented the distance formula
== I'm pretty sure the formula for distance is: D== rt (Distance= rate x time) == The formula for distance is: speed x time.
Speed equals distance divided by time. By rearranging that formula, we get time equals distance divided by speed.
The 3-D distance formula depends upon what the two points are that you are trying to find the distance between. In order to find the formula, you need to enter 2 sets of coordinates in the 3 dimensional Cartesian coordinate system, and then calculate the distance between the points.
Never forget to tell the distance of the measuring microphone (at the place of your ear), from the the sound source because the closer you are to the sound source the louder it will be.The sound pressure level decreases by 6 decibels per doubling of distance from the source to 1/2 (50 %) of the sound pressure initial value.The sound pressure decreases inversely as the distance increases with 1/r from the sound source.