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| | Hearing - Senses, Health 18
Acoustics, Ultrasound and Vibration - Technology, Science 704
 The Guns of Barisal and Anomalous Sound PropagationThe Guns of Barisal and Anomalous Sound Propagation
 Discussion of research into the physics behind mysterious sounds resembling cannon fire, heard at Barisal, India, and other locations around the world.
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The HumThe Hum
 Investigation into the cause and adverse health effects of the Bristol Hum, an obnoxious low-frequency noise heard in England. Conclusion is that the hum is due to a pulsed electrical signal.
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Hum ForumHum Forum
 Yahoo Group for discussion of mysterious hums.
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Hum Haunts Indiana City; Its Source Is a MysteryHum Haunts Indiana City; Its Source Is a Mystery
 New York Times article about a mysterious low-frequency noise reported by residents of Kokomo, IN.
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The Moodus NoisesThe Moodus Noises
 Account of the legends and modern accounts of the mysterious sounds heard in Moodus, Connecticut.
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Taos Hum PageTaos Hum Page
 Information and links about the "Taos Hum," a low throbbing sound heard in quiet locations worldwide, especially in the USA, UK, and northern Europe. It is not detectable by microphones or VLF antennae, and the source is still a mystery.
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Things That Go Boom in the NightThings That Go Boom in the Night
 Article about the Moodus (Connecticut) noises and the findings of recent investigations that linked these noises with seismic activity.
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Unexplained SoundsUnexplained Sounds
 About.com page gathers together information about mysterious booms, persistent hums, and underground rumblings that defy explanation. Includes audio clips.
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