What Is the Taos Hum and Why Can Only 2% of People Hear It?

What Is the Taos Hum?

The Taos Hum is a persistent, low-frequency drone reported by a small percentage of people — roughly 2% of the population — near Taos, New Mexico, and in other locations worldwide. Despite decades of investigation, no external source has ever been recorded by scientific instruments.

A Mystery That Has Lasted Over 30 Years

Reports of the Taos Hum became widespread in the early 1990s. By 1993, the U.S. government commissioned a formal scientific investigation involving researchers from multiple universities and federal agencies. The team deployed sensitive acoustic equipment across the region but failed to detect any consistent external sound source. Witnesses consistently described the noise as similar to a diesel engine idling in the distance — constant, inescapable, and deeply unsettling. For those who could hear it, the sound never stopped.

Who Hears It — and Who Doesn’t

One of the most baffling aspects of the Taos Hum is its extreme selectivity. Approximately 98% of people in affected areas hear absolutely nothing. The roughly 2% who do hear it — often called “hearers” or “hummers” — report that the sound is louder indoors than outside, and that earplugs provide no relief. This behavior is the opposite of what you would expect from an external sound source, which has led researchers to consider a radical alternative explanation.

Could the Sound Be Coming From Inside the Body?

Some scientists now believe the Taos Hum may originate within the human body itself. One leading hypothesis involves otoacoustic emissions — sounds generated spontaneously by the inner ear. Another theory focuses on the way certain individuals may perceive very low-frequency electromagnetic signals or seismic vibrations that most people’s auditory systems simply ignore or filter out. In this view, the “sound” is less about the environment and more about an unusual sensitivity in a small subset of human nervous systems.

Similar Phenomena Around the World

The Taos Hum is not unique. The “Windsor Hum” along the U.S.-Canada border was eventually traced to industrial activity on Zug Island in Michigan. The “Bristol Hum” in England has been reported for decades with no confirmed source. In each case, only a minority of local residents could detect anything at all. This global pattern suggests the phenomenon is not tied to one location but may reflect a broader, still-poorly-understood interaction between certain human sensory systems and low-frequency energy in the environment.

Why It Remains Unsolved

The core difficulty is methodological. You cannot study a sound that instruments cannot measure. Researchers are forced to rely entirely on self-reported testimony, which makes controlled experimentation almost impossible. The hearers themselves often suffer significant psychological distress — sleep deprivation, anxiety, and difficulty concentrating — which adds urgency to finding answers. After more than three decades, the Taos Hum remains one of the most thoroughly investigated and stubbornly unsolved acoustic mysteries in modern science.