How loud is tree removal gear.

[TreeClimber57]

The Fletcher–Munson curve also affects perceived loudness.

I forgot all about this in my previous post, I think this was two gentlemen with last names of Fletcher and Munson. They did studies with frequencies, and then plotted across a graph - curves vary with frequency if I recall. This was done using the scale avaiable at the time using phons. A more recent measurement using sones was developed, and a lot of discussion has taken place on decibels, sones and phons. I think a more recent curve or refinement of the Fletcher-Muson work was also completed by two other gentlemen. Frankly not sure if we will ever get this figured out in solid terms, as it is so variable from one test subject to another.

Just enough to know that it is LOUD.. almost to the point of painful behind a chipper.. and make sure you have lots of good PPE on if using.