Som grave e constante, muito potenre, com dura��o de cerca de 3 minutos, houvido durante a madrugada, sendo imposs�vel identificar a dire��o de onde vem. Eu houvi e minha esposa tamb�m houviu pois a acordei, por�m outros moradores na mesma casa n�o perceberam pois estavam dormindo.
Brasil, Estado Minas Gerais · 2018-10-01 · from the WORLDHUMMAP archive
An account in Brasil, Estado Minas Gerais
What they reported
First noticed: 2018
Pitch: Triangulo 100 hz
Loudest: During the night
Where: Equal indoors and outdoors
Symptoms: Headache, Sense of vibration
Changes with weather: S� houvi uma vez.
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This is a Hum report from Dr Glen MacPherson's World Hum Map, an open, worldwide record of people who hear an unexplained low-frequency hum. Reproduced with permission and with thanks; the project is at thehum.info. We remove anything on request. Location shown is approximate.