infraaudible

Infraaudible refers to sound waves with frequencies below the lower limit of human hearing. This lower limit is generally considered to be around 20 hertz (Hz). Sounds in this frequency range are often described as infrasound. While humans cannot consciously perceive infrasound, it can be generated by natural phenomena such as earthquakes, volcanic eruptions, and severe weather events like tornadoes. Man-made sources of infrasound include machinery, wind turbines, and explosions.

The effects of infrasound on humans are a subject of ongoing research. Some studies suggest that prolonged exposure to high-intensity infrasound may cause a range of physiological and psychological symptoms, including fatigue, nausea, dizziness, and anxiety. However, these effects are often debated and can be difficult to isolate from other environmental factors. Because infrasound can travel long distances with little attenuation, it has been studied for potential applications in areas such as seismic monitoring and detecting atmospheric disturbances. Specialized equipment is required to detect and measure infrasound, as it falls outside the range of standard audio equipment.