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There has been little mainstream attention. Only a handful of articles have been published in scientific literature, including: Fox, ;  Wilson, ;  Hanlon, The Hum has been reported worldwide.
Although an obvious candidate, given the common description of the hum as sounding like a diesel engine, the majority of reported hums have not been traced to a specific mechanical source.
In the case of Kokomo, Indiana , a city with heavy industry, the origin of the hum was thought to have been traced to two sources. The first was a hertz tone from a cooling tower at the local DaimlerChrysler casting plant and the second was a hertz tone from an air compressor intake at the Haynes International plant.
Two hums have been linked to mechanical sources. After CalPortland replaced the silencers on the machine, reports of the hum ceased.
One hum in Myrtle Beach, South Carolina was suspected of originating at a Santee Cooper substation almost 2 miles away from the home of a couple who first reported it. The substation is home to the largest transformer in the state.
One local couple sued the power company for the disruption the hum was causing them. The volume of the hum was measured at up to A suggested diagnosis of tinnitus , a self-reported disturbance of the auditory system, is used by some physicians in response to complaints about the Hum.
While the Hum is hypothesized by some to be a form of low frequency tinnitus  such as the venous hum , some report it is not internal, being worse inside their homes than outside. However, others insist that it is equally bad indoors and outdoors. Some people notice the Hum only at home, while others hear it everywhere they go. Some sufferers report that it is made worse by soundproofing e. Tinnitus is known to be exacerbated by allergens, which are regional and seasonal.
Due to blockages, inflammation, and pressure inside the head, taking allergy medicine may help to mitigate the Hum. Human ears generate their own noises, called spontaneous otoacoustic emissions SOAE. Researchers who looked at the Taos Hum considered otoacoustic emissions as a possibility. One of the possible causes of the West Seattle Hum considered was that it was related to the midshipman fish , also known as a toadfish. In the West Seattle case, the University of Washington researcher determined that it would be impossible for any resonating hum, transmitted via tanker or boat hulls, to be transmitted very far inland; certainly not far enough to account for the reports.
The Scottish Association for Marine Science hypothesised that the nocturnal humming sound heard in Hythe, Hampshire in the UK could be produced by a similar "sonic" fish. A case of "hum" in a house, reported in the Daily Telegraph 's 'Letters from Readers' on 18 January , proved to be a wasps ' nest in a hollow wall. From Wikipedia, the free encyclopedia. For other uses, see Hum disambiguation. The Windsor-Essex County Hum. Retrieved March 26, Mail Online. Can You Hear The Hum?
Retrieved 22 June Acoustical Society of America. Autumn Archived from the original PDF on New Scientist. Norfolk Tinnitus Society.
May Moir Personal pages. Archived from the original on 8 October Sydney Morning Herald. New Zealand Herald.
BBC News. The Independent.
Why is 'the hum' such a mystery? Archived from the original on December 22, October Sign Up Now! Already a Member? Log In You must be logged into UK education collection to access this title.
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Read On: Unsolved Mysteries PDF. View larger image. Keith West Sign Up Now! Synopsis What did happen to the crew of the Marie Celeste? And is there really a Loch Ness monster?