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 rules for volume:), 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.
Instead of cattail seeds, feathers can be used.