Low frequency generator for neighbors. Do-it-yourself ultrasonic gun. How will a request to the housing office affect

It’s better to use an infrasound emitter, no noise, just an effect... but you can pay for it yourself... so I won’t describe any diagrams. I'll give you food for thought. I used this thing in the garage, about five minutes after turning it on, rats and mice ran away along the road in formation, one after another, so much so that passersby shied away from both sides.
Therefore, people, do not annoy your neighbors, but also monitor the sounds in your apartments. Infrasound is very dangerous. If, for no apparent reason, objects in your apartment begin to move on their own, there is something to think about...
The nature of the occurrence of infrasound is very diverse.
Vibrations with a sound frequency less than 16 (17) Hz are called infrasound. Propagating well in water, infrasounds help whales and other marine animals navigate through the water. Hundreds of kilometers are no obstacle for infrasound.

The effect of infrasound on humans is unique. Infrasound with a frequency of 8 Hz, which is half the lower limit of audibility in height, comes close to the so-called alpha rhythm of the human brain (5-7 Hz) and causes people to feel fear and panic. In general, these frequencies are dangerous for humans.

Infrasound can instill in a person such feelings as melancholy, panic, a feeling of cold, anxiety, and trembling in the spine. People exposed to infrasound experience approximately the same sensations as when visiting places where encounters with ghosts took place. When in resonance with human biorhythms, infrasound of particularly high intensity can cause instant death.
Low-frequency sound vibrations can cause the appearance of thick ("like milk") fog over the ocean that quickly appears and also quickly disappears.
Some explain the phenomenon Bermuda Triangle precisely by infrasound, which is generated big waves- people start to panic a lot, become unbalanced (they can kill each other)
Infrasound can “shift” tuning frequencies internal organs.
Infrasonic vibrations with a frequency of 8 - 13 Hz propagate well in water and appear 10 - 15 hours before a storm.
Resonant frequencies of human internal organs:
Frequency, Hz Organ
20 - 30 - Head
19, 40 - 100 - Eyes
0.5 - 13 - Vestibular apparatus
1 - 2 - Heart
2 - 3 - Stomach
2 - 4 - Intestine
4 - 8 - Abdominal cavity
6 - 8 - Kidneys
2 - 5 - Hands
6 - Spine
When the frequencies of internal organs and infrasound coincide, the corresponding organs begin to vibrate, which can be accompanied by severe pain.
Bioeffectiveness for humans of frequencies 0.05 - 0.06, 0.1 - 0.3, 80 and 300 Hz is explained by resonance circulatory system, and frequencies 0.02 - 0.2, 1 - 1.6, 20 Hz - cardiac resonance. The sets of biologically active frequencies do not coincide in different animals. For example, the resonant frequencies of the heart for humans are 20 Hz, for horses - 10 Hz, and for rabbits and rats - 45 Hz.
The "voice of the sea" is infrasonic waves that arise above the surface of the sea when strong wind, as a result of vortex formation behind wave crests. Infrasound with a frequency of 7 Hz is lethal to humans.
Significant psychotronic effects are most pronounced at a frequency of 7 Hz, which is consonant with the alpha rhythm of natural brain vibrations, and any mental work in this case becomes impossible, since it seems that the head is about to be torn into small pieces. Infrafrequencies of about 12 Hz with a strength of 85-110 dB induce attacks of seasickness and dizziness, and vibrations with a frequency of 15-18 Hz at the same intensity instill feelings of anxiety, uncertainty and, finally, panic.
With sufficient intensity, auditory perception also occurs at frequencies of a few hertz. Currently, its emission range extends down to approximately 0.001 Hz. Thus, the range of infrasound frequencies covers about 15 octaves.
If the rhythm is a multiple of one and a half beats per second and is accompanied by powerful pressure of infrasonic frequencies, it can cause ecstasy in a person. With a rhythm equal to two beats per second, and at the same frequencies, the listener falls into a dance trance, which is similar to a drug trance.
When a person is exposed to infrasound with frequencies close to 6 Hz, the pictures created by the left and right eyes may differ from each other,<ломаться>horizon, there will be problems with orientation in space, inexplicable anxiety and fear will come. Similar sensations are caused by light pulsations at frequencies of 4-8 Hz. Infrasound can affect not only vision, but also the psyche, and also move the hairs on the skin, creating a feeling of cold.

In short, the neighbors began to make noise, at that moment you turn on the emitter (for no more than 30 seconds, otherwise they themselves will blow the roof off), they will definitely quiet down, as soon as the noise begins to repeat, do the same thing again and so on... until they calm down ( the most important thing is not to overdo it). In general, you develop in them a feeling of fear of noise; over time (two or three days) they will become quieter than mice and will shy away from any loud sound.
The reflex is developed on a subconscious level.

Frequency 6 Hz (causes a feeling of fear), strength 110 dB, signal form "noise"

A simple repeller of street alcoholics.

There is a children's playground under my window in the yard. During the day, children play in the sandbox, and in the evenings, the playground is occupied by young alkonauts. They drink beer until late at night, commit outrages, talk obscenely, and disturb people’s sleep. I got tired of it and decided to disperse it.

At home, on the mezzanine, there were two old homemade speakers lying around. I took out a low-frequency speaker from one, found in old stashes a circuit that I used to set up bass reflexes in speakers, and within a day I assembled a simple infrasound emitter in a plastic bucket case, tuned to the “frequency of fear.”

In the evening I hung the structure out the window and turned on the power. Five minutes later, the drunkard licked it off like a cow with its tongue.

Now when the noise starts, I turn on the scarecrow for a couple of minutes. In the yard there is peace, quiet and God's grace. And since the entire structure is a megaphone, it “blows” only into the yard, and not into the house. Even my dog ​​doesn’t howl.

Operating principle. The circuit is a self-oscillating oscillator operating at its own resonance frequency suspension system loudspeaker. Since the resonant frequency of the woofer is 40-100 Hz, to reduce it, you simply need to make the suspension system heavier. To do this, in the center of the diffuser you need to glue a spiral of solder weighing about 20 - 40 grams, then the resonant frequency is reduced to 6-15 Hz. It all depends on the brand of the speaker; look up the parameters on the Internet. Design. Schematic diagram- the simplest self-oscillating generator that starts from a speaker coil, I assembled it back in the fifth grade, when I was making speakers. Relay RES 9 at 5V, slowed down by capacitor C1. Actually, this relay is needed to “push” the speaker and turn off; then the circuit operates on the resonance of the speaker coil. Transistors - any low-frequency medium power ones, always on radiators (I took two bottoms from aluminum Coke cans). Power supply - 9V bapeshnik from the dead modem. Resistors R1, R4 - volume control - the circuit operates on a pendulum resonance, and although the electrics consume about two watts, the output is at least twenty, and the speaker goes haywire without them. The speaker is, in principle, any low frequency, I have an ancient 10 GD-34 at 10 W, with a 4 Ohm coil, the resonant frequency of the suspension is 80 Hz. Be sure to install it in the housing to prevent an acoustic “short circuit”. The body is a children's plastic bucket. I cut off the ears of the speaker with a jigsaw, stuck them in a bucket and glued them around the perimeter with Moment. Setting up - CAUTION INFRASOUND!!! First, you need to assemble the system on the table and check the electrics, first without a weight, when you turn on the power, the speaker should hum at the resonance frequency. I got it working with half a kick. If it doesn't work, play around with the capacitance of the capacitor. Then assemble the device into a bucket, glue the gaps between the speaker and the bucket with Moment, coat the weighting spiral with Moment and glue it to the speaker diffuser with Moment. Since I could not find a normal frequency meter, I adjusted the “fear frequency” of 13 Hz with an oscilloscope and a low-frequency generator according to the Lissajous figure. To do this, I applied 26 Hz from the generator to one input of the oscilloscope, and the wires from the speaker to the other. Then, in order not to get hit by infrasound, I covered the bucket, turned on the power for five seconds and looked at what happened. Then I turned off the power and began cutting the weighting coil a little at a time until I got a double Lissajous. That's all. I don’t post a photo - a bucket is just a bucket.

Reviews (6)

Conclusion:
- a circuit with a self-oscillating bridge is not viable due to the very low power in the dynamics and at the same time the large release of this power in the ballast.
- it was not possible to achieve a noticeable reduction in the resonant frequency by adding weight, even without closing the speaker in a box. It will not work in a closed box, even more so - this is taught by acoustic theory.
- as a next step, you can try a speaker circuit with an independent infrasound frequency master oscillator.

Guys, it’s simple, you just need to look at old literature. Wood, when did you make your trumpet? In 1929. When was modulation carried out? In 1902. And in general, read about sound, sound vibrations. For each type of vibration, there is its own design. For infrasonic vibrations, understand organ pipes, understand the work of Tesla with torsion bars. And in general, everything in life is simple there, all this can be done at home and all sorts of different designs, as Wood and Tesla did in their time from practically nothing.

I read your article. I am delighted!! Can you send me a diagram and details? description - already"I'm fed up" with these alcoholics... Perhaps, under good circumstances, we can set up such "scaremongers" for garden houses - but the thieves in the gardens are already tired (and not me alone)... but effective way They haven’t thought of anything against them yet..

Owner's response

The diagram is in the gallery

Results 1 - 6 of 6

The ultrasonic gun is assembled with your own hands using only two logical inverters and has minimal amount components. Despite the ease of assembly, the design is quite powerful and can be used against drunken drunks, dogs or teenagers who sit and sing in other people's hallways.

Ultrasonic gun diagram

Microcircuits CD4049 (HEF4049), CD4069, or domestic microcircuits K561LN2, K176PU1, K176PU3, K561PU4 or any other standard logic microcircuits with 6 or 4 logical inverters are suitable for the generator, but you will have to change the pinout.

Our ultrasonic gun circuit is based on the HEF4049 chip. As already mentioned, we need to use only two logical inverters, and it’s up to you to decide which of the six inverters to use.

The signal from the output of the last logic is amplified by transistors. To drive the last (power) transistor, in my case, two low-power KT315 transistors were used, but the choice is huge, You can install any NPN transistors of low and medium power.

The choice of power switch is also not critical; you can install transistors from the KT815, KT817, KT819, KT805, KT829 series - the latter is composite and will work without an additional amplifier on low-power transistors. In order to increase the output power, you can use powerful composite transistors like KT827 - but to boost it, you will still need an additional amplifier.

As a radiator, you can use any midrange and high-frequency heads with a power of 3-20 Watts, you can also use piezo emitters from sirens (as in my case).

By selecting the capacitor and the resistance of the trimming resistor, the frequency is adjusted.

This self-assembled ultrasonic gun is quite suitable for protecting a dacha area or a private home. But we must not forget - the ultrasonic range is dangerous! We cannot hear it, but the body feels it. The fact is that the ears receive the signal, but the brain is not able to decode it, hence the reaction of our body.

Collect, test, rejoice - but be extremely careful, and I say goodbye to you, but not for long - AKA KASYAN.

0 Users and 1 Guest are viewing this topic.

In Japan, they tested ultrasound to scare away teenagers

An experiment to scare away juvenile bullies using a device that produces an extremely unpleasant sound that only teenagers can hear was carried out on Thursday in a park in Tokyo's Adachi district. As RIA Novosti reports with reference to Japanese media, residents of houses adjacent to the park have long complained about the noise and hooligan behavior of teenagers who have chosen the park for nightly gatherings.

These complaints, as well as the constant damage from vandalism in the toilets, forced the district administration to conduct a scientific experiment.

Experience has shown that people between 30 and 50 years old cannot distinguish high-frequency sound, which reminds them of the noise in a train carriage. At the same time, the schoolchildren covered their ears and tried to move away from the source of the sound as quickly as possible.

“It’s a terribly unpleasant sound. It’s like someone scratching a blackboard with a fingernail,” a 15-year-old schoolboy shared his feelings.

“The sound cannot be tolerated for long,” echoed a 12-year-old schoolgirl.

Three years ago, "sound inaudible to adults" became available for download on Japanese cell phones. According to one of the companies that sell sound to users cell phones, in just one year it was downloaded to mobile phones more than 110 thousand times.

For security public order This is the first time a device using “anti-teenage” sound has been used in Japan. In the UK, we recall that local developers of a unique source of disturbing ultrasonic interference last year began production of the second model of a similar device - called Mosquito GSM. The first model appeared there a year earlier.

Not only police units, but also representatives of transport companies, shops, banks and municipal authorities. All of them are interested in discouraging socially dangerous youth from crowded places and important urban infrastructure.

Such a device costs about a thousand dollars and has a range of 15 to 20 meters. These new products do not pose any danger, notes the manufacturing company Compound Security Systems (CSS), based in the city of Merthyr Tydfil in Wales.

All you need to do is start using Mosquito and you can make a profit point of sale will certainly increase, and theft will decrease, says Commercial Director CSS Simon Morris. One of the companies told him that thanks to new development their income increased by 6 thousand dollars in the first week alone.

One of the new devices is used by the Mark&Spencer store. Arriva trains, Northern Rail and Chiltern Railways also spent money on the Mosquito, along with several police departments, including in London.

Distributors of the new product from JNE Marketing say that they have already opened offices for consultations on the use of Mosquito throughout the country.

Vlad1

• Guest

Dear admin, I tried to make the diaphragm of the woofer heavier, although not in your circuit, but simply by connecting it to the woofer output, the speaker wheezes, creaks, there are a lot of harmonics and distortions, but it doesn’t work. Perhaps we need to use some special speakers or piezo-crystal emitters, if so, tell me what brand.
And also, is it possible to embed a microphone into the circuit instead of a relay as a sound source? The fact is that with a relay this is a one-time action, and by inserting a microphone you can carry out a suggestion on the subconscious and not get up 2-3 times a night, not put the device out the window in bad weather, rain and snow, and give instructions to drunks not to return to our yard and tell everyone who has bruises that they know not to come here.
Vlad.

The lower the sound frequency, the greater the internal volume needed for the housing in which the speaker is installed.
The diffuser dimensions should also be small. In my youth, the 100-AS-001 speakers were produced in the Soviet Union.
There, at the bottom, there were speakers with a metal diffuser, mugs with a diameter of more than 50 cm. Infrasound could be obtained from them. Infrasound cannot be focused; it spreads in all directions. Remember the subwoofer from a home theater system; if you don’t place it in the room, it drones everywhere. There is a section in physics called acoustics, I recommend reading it.

Infrasound cannot be focused; it spreads in all directions.

It is not necessary to focus it, it is enough to create it at a certain point. For example, two intersecting ultrasound beams. They focus. Use two ultrasonic phasing arrays, the radiation of which differs by the frequency of the required infrasound. Direct them at an acute angle, to a certain intersection point. At the intersection point, due to interference, we get infrasonic beats. The method is found quite often on the Internet, and not only for ultrasound.

banana

• Guest

Drunk repeller (be careful infrasound!)

There is a children's playground under my window in the yard. During the day, children play in the sandbox, and in the evenings, the playground is occupied by young alkonauts. They drink, yell, and swear until late at night—they disturb people’s sleep. I got tired of it and decided to disperse it,” writes the author.

At home, on the mezzanine, there were two old homemade speakers lying around. I took out a low-frequency speaker from one, found in old stashes a circuit that I used to set up bass reflexes in speakers, and within a day I assembled a simple infrasound emitter in a plastic bucket case, tuned to the “frequency of fear.”
In the evening I hung the structure out the window and turned on the power. Five minutes later, the drunkard licked it off like a cow with its tongue.
Now when the noise starts, I turn on the scarecrow for a couple of minutes. In the yard there is peace, quiet and God's grace. And since the entire structure is a megaphone, it “blows” only into the yard, and not into the house. Even my dog ​​doesn’t howl.

Operating principle. The circuit is a self-oscillating generator operating at the natural resonance frequency of the loudspeaker suspension system. Since the resonant frequency of the woofer is 40-100 Hz, to reduce it, you simply need to make the suspension system heavier. To do this, in the center of the diffuser you need to glue a spiral of solder weighing about 20 - 40 grams, then the resonant frequency is reduced to 6-15 Hz. It all depends on the brand of the speaker; look up the parameters on the Internet.

Design. The circuit diagram is a simple self-oscillating generator that is started from a speaker coil; I assembled it back in the fifth grade, when I was making speakers. Relay RES 9 at 5V, slowed down by capacitor C1. Actually, this relay is needed to “push” the speaker and turn off; then the circuit operates on the resonance of the speaker coil. Transistors - any low-frequency, medium-power ones, always on radiators (I took two bottoms from aluminum Coke cans). Power supply: 9V bapeshnik from a dead modem. Resistors R1, R4 – volume control - the circuit operates on a pendulum resonance, and although the electrics consume about two watts, the output is at least twenty, and the speaker goes haywire without them. The speaker is, in principle, any low frequency, I have an ancient 10 GD-34 at 10 W, with a 4 Ohm coil, the resonant frequency of the suspension is 80 Hz. Be sure to install it in the housing to prevent an acoustic “short circuit”. The body is a children's plastic bucket. I cut off the ears of the speaker with a jigsaw, stuck them in a bucket and glued Moment around the perimeter.

Setting up - CAUTION INFRASOUND!!! First, you need to assemble the system on the table and check the electrics, first without a weight, when you turn on the power, the speaker should hum at the resonance frequency. I got about half a kick. If it doesn’t work, play around with the capacitance of the capacitor. Then assemble the device into a bucket, apply “Moment” to the gaps between the speaker and the bucket, coat the weighting spiral with “Moment” and glue it to the speaker diffuser with “Moment”. Since I could not find a normal frequency meter, I adjusted the “fear frequency” of 13 Hz with an oscilloscope and a low-frequency generator according to the Lissajous figure. To do this, I applied 26 Hz from the generator to one input of the oscilloscope, and the wires from the speaker to the other. Then, in order not to get hit by infrasound, I covered the bucket, turned on the power for five seconds and looked at what happened. Then I turned off the power and began cutting the weighting coil a little at a time until I got a double Lissajous. That's all. I don’t post a photo - a bucket is a bucket.

New on your site. I also have pain. Two slutty-looking girls settled above me and my wife,
I can’t understand what they do in life - they get up at 13-17 o’clock (you can hear stomping and the alarm clock), and then they start hammering in house style, sometimes for 7 hours in a row! They go to bed at 10 am! ...I can’t understand.
My wife and I wrote a note, it didn’t help, we went to see them three times, saying we just want to talk, without blood - they just look through the peephole, do it quietly, and half an hour later they do the same thing.
He hit the ceiling with a sledgehammer and on the radiators, but this only embitters them and they turn it up louder and stomp their feet in retaliation...
I can’t understand people like that... I was once reproached by a neighbor myself (long before the girls showed up) for drinking loudly, so I felt so ashamed that I was violating the comfort of other people, their right to sleep... but for some reason these people didn’t understand.
Then he hid. Injected eggs into the upholstery. The eggs didn't help - there was no stink. I cracked an egg into a glass and started watching and smelling it every day. It just evaporates!! There is less and less of it in the glass and there is no stink! I don't know how to make it go rotten so that I can then put it into a syringe. For now, we have another syringe with fish sauce/oil, egg and ammonia. I keep him warm and in the light. There is some air in the syringe for any decomposition reactions.
And now about the sound.
I generated seven sounds in Sound Forge, each several hours long.
Several sounds with frequencies of 20 - 40 Hz with filters and amplitude modulation of 5-7 Hz.
Several high-frequency 20-21 kHz with filters.
One sound where one channel is low pulsating frequencies, and the second channel is a high-frequency squeak.

These sounds do not have a super effect and so on, but they can spoil the mood greatly (my wife heard a squeak and her eyes widened). When pressed to the ceiling (or better yet, the junction of a non-load-bearing wall and the ceiling, in conditions of morning and daytime silence they will have a certain resonance and will reach the addressee. The main thing is to let it VERY LOUD! Another advantage is that it is impossible to understand where the sound is coming. Set up a test. He waited for the girls above to leave, then he moved everything to the ceiling, turned it on full blast, closed the doors in the rooms, went out onto the staircase and began to listen. Unintelligible squeak/hum. On the verge of “maybe it seems to me... I’m stupid or something...” I listen to my door - it seems to be from there. I listen to the neighbor's door on the right - maybe from there. I turn my head - maybe from the elevator...
Every building and apartment is different, I can’t guarantee that it would be the same for everyone.
Now this thing is ready, I’m waiting for a reason, so to speak, to run into the idea, and not out of lawlessness. They haven’t made any noise for 4 days. As soon as possible, immediately, from 7.00 and throughout the day.