Study Finds Infrasound the Likely Horror in Hauntings

Key Takeaways

• Infrasound below 20 Hz triggers physiological stress responses
• Study links low‑frequency noise to feelings of dread in haunted sites
• Building codes may need revisions to limit hidden mechanical vibrations
• Theme parks and VR creators can use infrasound for immersive scares

Pulse Analysis

The recent Frontiers in Behavioral Neuroscience paper details a controlled laboratory investigation where participants were exposed to sub‑20 Hz sound waves generated by aging pipework and HVAC systems. Researchers recorded elevated heart rates, skin conductance spikes, and self‑reported anxiety, mirroring the classic sensations people describe in reputedly haunted sites. By isolating infrasound as the variable, the study provides a concrete physiological mechanism for the uncanny feelings that have long been attributed to ghosts or malevolent spirits.

For the built environment, these results raise immediate questions about health and safety standards. Modern building codes already address audible noise, but the hidden low‑frequency vibrations of legacy infrastructure often go unchecked. Facilities managers may need to audit older structures for infrasound emissions, installing dampers or redesigning mechanical layouts to mitigate unwanted exposure. Such proactive measures could reduce employee discomfort, lower stress‑related absenteeism, and improve overall occupant well‑being, especially in schools, hospitals, and office towers housed in historic buildings.

The entertainment sector stands to benefit as well. Theme parks, haunted attractions, and virtual‑reality developers can deliberately integrate calibrated infrasound to heighten fear without visual cues, creating more immersive and cost‑effective scares. Conversely, the findings also warn against inadvertent overuse, which could trigger adverse health reactions in sensitive audiences. As research continues, we can expect a new niche of acoustic engineering services focused on measuring, controlling, and creatively applying infrasound across commercial and public spaces.