Taos Hum — Taos, New Mexico, USA — and globally
Persistent — heard continuously by ~2% of the local population. Recordings represent attempts to capture a phenomenon that most instruments cannot reliably detect.
The Taos Hum is distinctive among acoustic anomalies because hearers describe it not as an external sound but as something felt internally — a vibration in the chest and skull rather than a sound in the ears. Studies confirm it is not tinnitus and not a shared hallucination: multiple independent hearers describe the same characteristics, and some recordings have captured a signal at the reported frequency. Yet no physical source has been verified. Proposed explanations include geological resonance, industrial infrasound, very low frequency radio transmissions, and spontaneous otoacoustic emissions — none have been confirmed.
Technical Parameters
| Acoustic record ID | AUDIO-007 |
| Year | Documented since 1991 |
| Source | Taos, New Mexico, USA — and globally |
| Network / Recording | Multiple independent field recordings / University studies |
| Frequency | 32–80 Hz, modulated 0.5–2 Hz |
| Classification | Unresolved — no confirmed source after 30+ years of investigation |
| Audio | Available |