So while they were at the waterfall and the father says that so long as there is a “louder” noise, they can’t hear you. He then screams under the waterfall to prove his point.
So why didn’t they just create a permanent, loud noise nearby? They had power, so how hard would it be to power up some speakers to blast sound?
the monsters would have surely destroyed the source of the sound as they did with the TV making static noise in the basement
shareI agree with orangeflava.. the creatures investigate any new noise that is made and will try to destroy it.
What did surprise me is they didn't spend more time at the falls. Seemed like a good place to give birth and raise a crying baby... but I guess they thought that their sound proof room was a better plan.
They had the best generator in the world. It made no noise at all! I didn't see the world's largest solar array and batter system for all those lights. I have a whole home solar system and 60 batteries and I can't come close to producing the amount of stored power they did. BTW, an inverter makes a high pitch buzz that is just out of the range of a human ear so I am sure the monsters would have come to the battery room and ripped it apart.
Very good point that they never showed us how they powered the farm.
They did show that the Dad was a tinkerer so its possible he had the tech know how to setup such a large system, and maybe had it setup prior to the alien invasion? Could also be a nearby wind farm. There were rivers in the area, maybe they were on hydro dam ? We know the creatures will leave consistent sounds alone if they are not organic... for example they do not constantly attack the waterfalls. They seem to accept it as part of the environment, same could be true of a hydro dam or wind farm.
As far as light electronic sounds, whether from inverters or monitors or processors or radio, I think we just have to assume they were either too low in amplitude or the wrong frequency for these monsters.
Windmill and hydro have the same fault, they used a spinning turbine to move the armature in the magnetic field. The turbine is quite loud and unnatural sound.
shareWe don't know whether these creature would perceive the sound of a turbine as "unnatural". The sound of a turbine and a waterfall may be just as natural to these creatures. Because we weren't given to much information there is a lot of assumptions here, but I would assume they are only interested in organic life that produces sound.
Complete speculation... but I would assume that a creature like this may be attracted to a windmill farm... attack a few turbines and realize that there is no organic life/material and leave it be... much like the would eventually leave the waterfall alone...
It seems to me like they come for any loud sound regardless (gunshot, fireworks, boy falling into corn mill, truck rolling down hill, toy rocketship, yelling, rodents scurrying out into a field) so not sure why they aren't constantly redirected by all other signs in the environment.
shareThe monsters would find it easy to break speakers, or anything man-made. I think they'll find it a lot trickier to stop waterfalls that have been around for millennia.
Put them in a container of reinforced steel. With how they were struggling with the truck's doors (which are only merely thicker than the silo walls), some steel box would make sure the "noise devices" could work for quite some time.
Also the creatures didn't look like they were good in climbing. So they could've put those things up into trees or on top of the silo.
Never mind reinforced steel, it doesn't matter if the monsters can simply rip out the wires to the speakers. Otherwise, how would you power them?
Batteries. They will last for a while and if they die, put up another device somewhere else and retrieve the empty batteries for charging. Or use armoured cables. Or just bury the cable. The monsters only attack the sound source anyways.
shareThe wires are for the signal for the sound, not just the power. The sound generator source would also have to be there with the batteries and the speakers, unless there's a central location for the sound generator.
This all reminds me of the time when, as a kid, I wrote a letter to a ninja and asked him how to get past an electric fence. He wrote me back and said I could pole vault over it, for starters.
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