I present to you an adjustable soundproof headphones. The question arises: "What can be adjusted in soundproof headphones?". And it is desirable to regulate the degree of sound insulation in them. I even came up with two uses for them:
1. Getting a neighbor: Turn on the speakers to the maximum permissible volume by law (in Ukraine, this volume can be determined by eye using the volume standards: Norms on noise in Ukraine), or, if you are not afraid of cops, turn on at maximum volume. I don’t know for sure, but I think that the maximum permissible noise from 7 am to 11 am is the maximum volume that is possible in most devices (for example, TVs): at least I would have to exceed the volume admissible at any time (in this case, time of day) would not allow in most cases.
2. I heard that the scream calms the nerves, but judging by my neighbors, it calms the nerves only to the one who screams, and to everyone who hears, the scream annoys the nerves. To prevent nerves from irritating the listeners, you adjust the degree of sound insulation in the headphones so that it is comfortable to listen to your neighbor, and put them on. If you want to scream in order to calm your nerves, it is advisable to find a partner of the opposite sex and scream with him as if the couple were quarreling. If you don’t know what to shout, you can read the text from some theatrical work, and tell the neighbors that you are rehearsing. If the two of you do not know what to scream, you can open a dialogue in a theatrical work. I noticed that various physical and technical methods of calming nerves are called therapy; So I called this therapy soundproof.
Next, close these jars with square pieces of matter, the side of which is 3 cm larger than the diameter of the jar.
And we press the edges of these pieces of matter to the top of the side surface of the jars with clerical gum.
Next, we take an elastic band for underpants, measure the upper diameter of the can, calculate the length of this circle by multiplying this diameter by π, and cut out a piece of elastic that is 5 centimeters longer from the circumference.
Next we measure the contour of the head from ear to ear, both above and below. We subtract the diameter of the circumference of the top of the can from the last two lengths and cut out pieces of elastic that are 5 centimeters longer than the received data, pulling them with such force that we want the headphones to be pressed to our ears.
At the ends of the last two pieces of gum we tie double knots, leaving a small hole after the first knot.The first two pieces of gum we wrap the cans of seaweed from the top around the circumference in one revolution about the ends, insert into the holes of the last two pieces of gum and tie the ends of the first two ends of the gum.
We press the jars to the ears and pull the last two pieces of gum around the head according to its respective girths. Here are the headphones and ready.
Instead of cattail seeds, feathers can be used.