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The following is a list of unidentified, or formerly unidentified, sounds. All of the sound files in this article have been sped up by at least a factor of 16 to increase intelligibility by condensing them and raising the frequency from infrasound to a more audible and reproducible range.
An auditory hallucination, or paracusia, [1] is a form of hallucination that involves perceiving sounds without auditory stimulus.While experiencing an auditory hallucination, the affected person hears a sound or sounds that did not come from the natural environment.
The Hum is a name often given to widespread reports of a persistent and invasive low-frequency humming, rumbling, or droning noise audible to many but not all people. Hums have been reported all over the world, including the United States, the United Kingdom, Australia and Canada.
An unexplained high-pitched tone has kept residents of a Portland suburb awake at night for at least a week.
Nasa says that “strange” noises heard coming from the troubled Boeing Starliner spacecraft are not an indicator that its crew are in any danger.. The unusual noises have now stopped and were ...
When this noise is filtered, it can be made to produce noises which sound like speech. Federlein says that this is no different from using a wah pedal on a guitar, which is a focused sweep filter which moves around the spectrum and creates open vowel sounds. This, according to Federlein, sounds exactly like some EVP.
NASA scientists believe the ominous noises could potentially be the "background noise" of the Earth otherwise known as "Ambient Earth Noise." Since this still lacks scientific confirmation ...
Composers have long been using the spatial components of music to alter the overall sound experienced by the listener. [14] One of the more common methods of sound synthesis is the use of combination tones. Combination tones are illusions that are not physically present as sound waves, but rather, they are created by one's own neuromechanics. [15]