Hum

Hum is a phenomenon characterized by a persistent, low-frequency droning or rumbling sound heard by some people in specific locations. It is often described as a low, continuous tone that can vary in pitch and intensity. The exact cause of the hum remains unknown, but theories suggest it may be related to environmental factors, atmospheric conditions, or vibrations from infrastructure such as industrial activity or communication systems. Not everyone perceives the hum, and for those who do, it can be a source of distress. Research continues to explore its origins and why it affects some individuals differently.