According to Soundless Music Shown to Produce Weird Sensations, inaudible, low-frequency sounds could be responsible for “supernatural” phenomena:
Mysteriously snuffed out candles, weird sensations and shivers down the spine may not be due to the presence of ghosts in haunted houses but to very low frequency sound that is inaudible to humans.
British scientists have shown in a controlled experiment that the extreme bass sound known as infrasound produces a range of bizarre effects in people including anxiety, extreme sorrow and chills — supporting popular suggestions of a link between infrasound and strange sensations.
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In the first controlled experiment of infrasound, Lord and Wiseman played four contemporary pieces of live music, including some laced with infrasound, at a London concert hall and asked the audience to describe their reactions to the music.
The audience did not know which pieces included infrasound but 22 percent reported more unusual experiences when it was present in the music.
Their unusual experiences included feeling uneasy or sorrowful, getting chills down the spine or nervous feelings of revulsion or fear.
“These results suggest that low frequency sound can cause people to have unusual experiences even though they cannot consciously detect infrasound,” said Wiseman, who presented his findings to the British Association science conference.
Infrasound is also produced by storms, seasonal winds and weather patterns and some types of earthquakes. Animals such as elephants also use infrasound to communicate over long distances or as weapons to repel foes.