Noise discipline
Typically the bigger issues with this come from children, dogs and Untrained adults which can be way worse than the kids and animals. EVERYONE should be trained in quiet mode operations. This is easier done IF a house hold member is a shift worker. My wife and I both had parents who worked other shifts so we were raised being quiet. WE both worked shifts [evening and nights] and so raised our kids to be quiet. This was so ingrained into us that on hard wood or tile floors walking ‘normally’ for us in combat boots we often got accused of ‘sneaking up on people. The grandkids’ donor was NOT raised to be quiet and even in stocking feet we could hear him walking in the house. He often bragged of what a great hunter he was [from the road] and ALL the things he learned in Marine boot camp.. [The whole WEEK [7 days] ] that he was in boot camp before he got the boot…
The short of this discussion on noise discipline is START early teaching the kids about it and it will be WAY easier to do. You can make a game out of it.
Along with all that has already been discussed is LIGHT discipline. Keep lights low and shielded so that it only extends at most a few feet from the source. Sound is hard to track due to echoing unless it is a constant noise like equipment [generators or music]. Light once seen can be followed EVEN if it was only a flash like from a camera. All they have to do is mark the direction and then plot it on a map. IF 2 or more people witnessed it your exact location is easy to triangulate. Along with LIGHT discipline is REFLECTIVE discipline which is light reflecting off of equipment and thus giving your position away. Remove or cover reflective items with cloth, flat paint or mud to cut down on this issue.
Conversely if you are trying to be noticed make noise, start small controlled fires which smoke a lot and use something reflective to catch the sun light and redirect it toward searchers.
All things being equal the one thing which attracts attention the most is MOVEMENT. If you are attempting to travel without being noticed move slowly and deliberately without acting as if you are sneaking about. Stop often and survey your surroundings.
OUTLINES disrupt your outline so that you do not look human [same thing for equipment make is so that the outline does not look like a car or truck or whatever. Also be very aware of your background so that you do not stand out such as avoiding the ridgeline of a hill or building.
Like noise and light discipline you have to watch the color of your attire and equipment. Avoid bright un-natural colors unless you WANT to be found. Reds and oranges are out for blending in. also avoid camouflage and tactical black as they shout ‘I have stuff, come and take it!’ Browns, tans, light greens, grays and cream colors work well for blending in in most places. Look to see what the dominate colors are around you and go with that. Some times a muted plaid or flower shirt works well.