How to solve the house vibration caused by machine operation?

Sound waves with sound frequency less than 20Hz (Hz) are called infrasound, which is what people call infrasound. Infrasound waves are not easily attenuated and absorbed by water and air. Infrasound often has a long wavelength, so it can be diffracted around some large obstacles. Some infrasound waves can circle the earth two or three times. Some frequencies of infrasound are similar to those of human organs, so it is easy to vibrate with human organs, which is very harmful to human body and can lead to death. However, infrasound is invisible and inaudible, but it is everywhere. Earthquake, volcanic eruption, storm, wave impact, artillery firing, thermonuclear explosion, etc. Will produce infrasound, scientists can "hear" with the help of instruments. Infrasound waves travel at the same speed as audible sound waves because of their low frequency. The atmospheric absorption of infrasound is very small. Infrasound travels a few Qian Qian meters, but it is absorbed less than a few ten thousandths, so it travels a long distance, ranging from several kilometers to hundreds of thousands of kilometers. 1In August, 883, Krakato volcano erupted between South Sumatra and Java Island, producing infrasound waves that circled the earth three times, with a total length exceeding100000 km and a duration of 108 hours. 196 1 year, the infrasound wave caused by the Soviet nuclear test on a new island in the Arctic Circle circled the earth 35 times. Infrasound also has a strong penetration ability, which can penetrate buildings, bunkers, tanks, ships and other obstacles. The sound wave of .7 000 Hz can be blocked by a piece of paper, while the sound wave of 7 Hz can penetrate more than ten meters of reinforced concrete. Infrasound waves produced by earthquakes or nuclear explosions can destroy houses on the shore. If infrasound vibrates with surrounding objects, it can release considerable energy, such as infrasound energy of 4 Hz~8 Hz in human abdominal cavity. Infrasound will interfere with the normal function of human nervous system and endanger human health. A certain intensity of infrasound can make people dizzy, sick, vomiting, out of balance and even depressed. Some people think that motion sickness and seasickness are caused by infrasound waves accompanied by cars and ships. People who live in buildings with more than ten floors often feel dizzy and nauseous in windy weather, which is also because strong winds make high-rise buildings shake and produce infrasound waves. Stronger infrasound waves can also make people deaf, unconscious, insane and even die. Since the 1950s, the development of nuclear weapons has greatly promoted the establishment of infrasound, and great progress has been made in the research of infrasound reception, anti-jamming methods, positioning technology, signal processing and propagation, and the application of infrasound has gradually attracted people's attention. In fact, the application prospect of infrasound is very broad, including the following aspects: 1 Study the characteristics and mechanism of natural infrasound and predict natural disaster events. For example, infrasound generated by the friction between typhoon and sea waves travels much faster than that of typhoon. Therefore, people use an instrument called "Jellyfish Ear" to monitor the infrasound waves emitted by the storm, and then give an alarm before the storm comes. By using similar methods, natural disasters such as volcanic eruptions and thunderstorms can also be predicted. 2. By measuring the propagation characteristics of naturally or artificially generated infrasound in the atmosphere, we can detect the properties and laws of some large-scale meteorological processes, such as sandstorms, tornadoes and electromagnetic waves disturbing the atmosphere. 3. By measuring the characteristics of weak infrasound emitted by some organs of human beings and other organisms, we can understand the activities of the corresponding organs of human beings or other organisms. For example, the infrasound diagnostic instrument developed by people can check whether human organs are working normally. 4. Military application of infrasound, making use of the strong penetrating power of infrasound to make weapons that can penetrate tanks and armored vehicles.