I agree with others as to deer getting used to about any noise, if exposed to it long enough.
About 4 or 5 years ago, I put a stand up in April so it would be up in plenty of time for the deer to get used to it. When I came back for Bow season in October, there was a gas drilling outfit, set up about 50 yards from my stand. They were banging drill stem, and generators running, and so much noise that I could barely hear at all, and I watched deer feeding along the fence, less than 25 feet from the drill sight all morning long.
I thought I would play with them a little, as I could not shoot toward the drill sight, so I pulled out a Bic Lighter, and gave it a flick. Every deer in the group looked up at me . I did this several times, before they finally saw me and spooked away.
I think that natural predators that the deer fear, don't carry cannons, bang pipes, or run chain saws, so I think they tend to ignore loud noises for the most part, as they really don't present much of a danger to them. I think they key their hearing down to the little noises like a stick breaking or a limb swishing, that might represent a danger to them.
We also have deer that seem to live around our rifle range, that have to be run off so we can use the range at times.
I have deer that come into my back yard, and don't seem to be the least bit intimidated by my grand children (Ages 4 through 7) as they play, but if one of my poodles gets out of the house, they leave really quick.
I would say the best way to keep deer away would be a dog, but it would have to be a really well trained dog so that it would only chase the deer for a little while, otherwise a deer will take your dog over to the next county.