Infrasound is one of those things that we all taught in high school science that we think we should never know about life again. We are then interested in the paranormal, and suddenly infrasound is mentioned in relation to ghost parties – sometimes as a cause, sometimes as a way to stimulate the activity, and even as a proposed frequency range for spiritual communication.
Infrasound refers to sound waves with frequencies below 20 Hz, the lower limit of human hearing. When we talk about the frequency of a sound, we mean the pitch. So infrasound are deep bass tones that are just too deep for our ears to pick up, even when they are very loud. Infrasound is so little frequency that it is usually felt instead of heard, such as when you stand in front of a speaker in a nightclub and you can feel the bass in your chest.
Other natural causes of infrasound are volcanic eruptions, ocean waves, avalanches, meteors that penetrate the atmosphere of the earth and heavy weather such as thunderstorms, strong winds, tornados and hurricanes. Auroras are also a source of infrasound. The natural light reproduction of Auroras, caused by charged particles from the sun that interact with the atmosphere of the earth, can also generate infrasound. This is due to the energy release and movements in the upper atmosphere. There are also sources made by people such as explosions, machines and even wind turbines.
Some paranormal researchers suggest that infrasound can influence people in a way that can explain certain reports of ghost observations and creepy feelings at so -called chased locations. Because infrasound can cause physical sensations, such as vibrations in the chest, feelings of fear or a feeling of discomfort, it is believed that these sensations can be misinterpreted as paranormal phenomena.
For example, a person who is exposed to infrasound in an old, creaking house can feel a sense of fear or experience strange vibrations, making them believe that they are in the presence of a spirit. Moreover, it is known that infrasound visual hallucinations caused by shaking the eyeballs, which could explain some reports about seeing ghostly figures or strange lights.
But the link of infrasound with the paranormal does not end there. Because infrasound consists of low -frequency sound waves, these waves have the ability to cause physical vibrations in objects and even in the human body, something that can be seen for everything, from observing appearances to poltergeistic activity.
When infrasound waves match the natural frequency of an object, they can ensure that it resonates. Resonance can strengthen the vibrations, making them noticeable and structures, objects and even the human body. This could explain reports of shaking objects, doors cracking or other unusual movements at ghost locations.
People who are exposed to infrasound can feel vibrations in their chest, belly or other parts of their bodies. These sensations can be disturbing and can contribute to feelings of fear or fear, but it is still narrower that they can also cause vibrations in the eyeballs, which leads to visual disruptions. This can manifest itself as seeing shadows, flickering lights or other visual anomalies that are possible for spooky appearances.
This is something you should pay attention to when investigating a spooky location. Conversely, some paranormal researchers believe that deliberately introducing infrasound in a location can act as a form of energy that can feed or strengthen paranormal activity. This hypothesis is based on the idea that spirits need energy to manifest themselves and that playing infrasound at a location can offer this necessary energy.
Another area of paranormal research where infrasound is often spoken is electronic vocal phenomena (EVP), which are spooky voices that are caught during investigations in electronic recordings. These sounds are heard while playing the recording, but were not audible at the time of recording. Some researchers claim that these sounds were not audible at the time because they were infrasound. In fact, you will often hear ghost hunters say that spirits communicate about lower frequencies, although few actually understand what they are claiming here.
The problem with this theory is that the types of audio recorders that are used in paranormal studies -or commercially available audio recording devices -do not have the possibility to catch frequencies under the human hearing threshold. To record infrasound, you need very expensive microphones that are specifically designed to tackle low -frequency sounds. These very microphones are often used in scientific research and industrial applications.
Regular microphones used in most consumer recording devices, such as smartphones and handheld recorders, are unable to detect infrasound. It is known from other researchers that they use a digital noise level meter to try to measure infrasound, but even these usually do not have the opportunity to measure sounds under 20 Hz.
Even if a recording device is equipped with a suitable microphone, the device itself must also be able to process and store infrasound frequencies. Professional audio equipment used in studios or researchers can capture a wide range of frequencies, including infrasound, but these are usually not used by amateur ghost hunters.
Once recorded, the infrasound recordings must be played with software that can process low-frequency audio. Standard audio processing applications may not be suitable, so specialized analysis tools are often required to correctly identify and interpret infrastructure data. Moreover, standard Audio playback equipment, such as regular speakers and headphones, is not designed to reproduce infrasound. These devices are generally built to process the frequencies within the hearing range and often filter something out below.
Instead of listening, researchers can use software to visually analyze the infrasound recordings. Spectrograms, which are visual representations of the frequency spectrum of audio, can help identify patterns or anomalies that can match EVPs or other phenomena.
In most cases, when ghost hunters believe that they capture EPPs in the infrasound range, they may be able to confuse low-frequency sounds in the human hearing range with real infrasound. However, human voices usually vary from around 85 Hz to 255 Hz, depending on the pitch of the voice. Men generally have lower voices (85 Hz to 180 Hz), while women have higher voices (165 Hz to 255 Hz). Even at the lowest frequencies, human voices are still far above the infrasound threshold of 20 Hz.
If researchers record what they think are at extremely low frequencies, they would not sound like human voices. Instead, they would be distorted and difficult to recognize as speech because of the physical limitations of how sound waves behave on such low frequencies.
For most paranormal researchers who use standard equipment, it is unlikely that they would hear directly every infrasound that was recorded during a study. However, you may be able to identify his presence at a location by paying attention to unusual vibrations or movements in the area.
Although these vibrations can be an indication of infrasound, you do not know the exact frequency, but you can assess the chance that the infrasound is by considering possible sources of vibration, such as machines in the neighborhood, traffic or natural events such as wind or seismic activity.
By understanding infrasound, we can gain insight into how our environment could influence our perceptions of the unknown, whether they are spirits in a haunted house or a fleeting dark figure that you catch in the corner of your eye.
