[UPDATE: it turns out there are even simpler and less expensive ways to build a working apparatus.. Will provide instructions for it soon. 02-16-2022 08:57 PM]
[NOTE: There appear to be specific times of the day when cell phone, Bluetooth, and WiFi frequencies are more likely to have something than not. I haven't seen any pattern in this but I'm sure it has nothing to do with my attempts to get the apparatus pictured below working. Definitely not. 01-23-2022 05:53 PM]
Pictures are worth many, many words.
But just so you know what you're getting into... The fan will be stepping ultrasound down into the audible range, the Bluetooth speakers will be creating radio frequency current due to radiative pressure out through the wireframe trashcan.
It will feel similar to a slight chilling effect when the Bluetooth speakers are being streamed to. But there's no nearby ghosts or anything like that - radio frequency current can create temperature gradients when it's oscillating current.
How do I know this? I'm not exactly sure.
Find a free app that can stream white noise to the Bluetooth speakers. It actually doesn't matter what you stream to them - it can be anything. It's the Bluetooth signal we care about. If white noise only gets on your nerves then try streaming a carrier frequency of 40 Hz with a beat frequency of 1.4 Hz (40.7 Hz is important enough it should be memorized). You can use the lowest volume setting your phone has while streaming. The Bluetooth signal stays the same strength no matter how loud you set the speakers to be. The fan will also assist with adding an oscillation to the radio frequency current.
Should you be including cell phones in your build, I recommend putting them on the fan inside the wireframe trashcan instead of the Bluetooth speakers or WiFi routers. Their signal has much greater power and will produce significantly more radio frequency current. They should also be oriented by axis. Below is a 2 axis configuration. Imagine it under the trashcan on top of the fan.
If you have trouble getting the parts to stay in place, use a few of the magnets to hold them together.
Should your build include WiFi routers then set them up nearby with the Bluetooth speakers. Use the correct x to y or x to y to z orientation depending on whether you have 2 of each device or 3.
Next we need to generate a static electric field. Those can become really nasty once they oscillate above a certain frequency so we'll cheat and use the same embedded oscillation already present to keep that from happening.
Aim the guitar amp towards the wireframe trash can from a few feet away. Plug the junk connector and bare wire into the amps INPUT port. It will behave as an antenna and feed any background signal into the amp. Set the volume so any oscillation from the speakers is just audible for now. When the amp is running a static electric field should begin forming. You may feel like the hairs on your exposed skin are waving slightly, but it won't be the same feeling as static electricity from dragging your shoes on carpeting.
Last step is to make some meaningful shape from the remaining magnets. Place them near the fan and amp.
Those small Neodymium magnets are equal to ones much larger than they are. But still, there's room for improvement.
And the strength of the magnetic field can be increased further to hold the static electric field in place as it grows.
Once you have the apparatus up and running, the kitchen - near the exhaust fan over your oven - is a good place to test it. You may start to feel like a panic or anxiety attack is starting if you're close enough to be enveloped in the static electric field. That reaction might be due to the ultrasound which should start being emitted by the field.
How do I know that? I'm not exactly sure because I can never remember to grab an ultrasonic receiver once I get to that part. Let's just say the combination of oscillating current and the ultrasound it produces should be called the "stupidification effect". It's referred to as "fuzzy brain" in other contexts. You'll find out what that means soon enough.
Some individual's minds are able to find patterns within noise better than others. They can see something visually and find the pattern. They can hear something and immediately find the pattern in it too. That's always assuming there is one, of course.
Find at least one if those individuals to listen while the apparatus is running. When they give the signal, start recording from exactly the spot they can hear a pattern from.
Keep the recorder in the same orientation and height as that individual's ear at the moment they could hear a pattern.
I've been made aware - please don't ask - that what can be heard is statistically indistinguishable from random noise. But it's not just noise at all and only can appear that way. What it does mean is that most software used to clean up the audio will only make it worse.
I'm not an expert in audio but I can recommend this: Amplify 1 time only, Remove noise like background traffic 1 time only, Slow pitch and speed to 75%, Slow speed again to 65%.
One last thing... the bottom half of the cookie tin isn't actually needed... but it's funny.
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