The Herald Bulletin - 11:13 p.m.: Mysterious noise annoys Anderson couple

Tue, Nov 10 2009

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The Porcaro's and their house at 34 N. Lansdown Way in Anderson where they started hearing a strange noise that they can't find the source of. Paul and Sadie in their home.
John P. Cleary / The Herald Bulletin

The Porcaro's and their house at 34 N. Lansdown Way in Anderson where they started hearing a strange noise that they can't find the source of. Paul hears the sound throughout the entire house, hear he pauses in his work room to pick up the sound.
John P. Cleary / The Herald Bulletin

The Porcaro's and their house at 34 N. Lansdown Way in Anderson where they started hearing a strange noise that they can't find the source of. Paul pauses in the guest bedroom to try to pick up the unexplained noise.
John P. Cleary / The Herald Bulletin

11:13 p.m.: Mysterious noise annoys Anderson couple

Justin Schneider

“Hums,” low-frequency sound phenomena similar to the one experienced by Paul and Sadie Porcaro, have been reported in Taos, N.M., the United Kingdom and New Zealand. In the case of the “Kokomo Hum,” the sound was traced to local industry. But here are some more interesting explanations that have been suggested:

• Man-made noise: Low-frequency sounds generated by industry or stereo subwoofers can be amplified by walls and structural geometry

• Infrasound: Geological changes and plate tectonics can generate sounds too low to be perceived by the human ear, called infrasound

• Pulsed microwaves: Similar to the microwave auditory effect, in which audible clicks are produced by microwave frequencies generated inside the human head

• Extremely low-frequency communication systems: Submarines communicate using ELF radio transmissions that may produce other audio effects

• Ionospheric heaters: Antennae in Alaska, Puerto Rico, Norway and Russia used to heat the ionosphere create light effects similar to the aurora borealis and may create sound, as well

• Tinnitus: A hearing condition that produces ringing or “whooshing” in the ear when no actual sound is present

• Tensor tympani: According to a German study, vibration of the tensor tympani, a muscle that tightens the eardrum, may cause a humming effect

— Source: Wikipedia

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