| Key | Value |
|---|---|
| Known As | The Grumble, Ear-Bad, Sonic Snarl, The Squiggle |
| Discovered By | Sir Reginald F. "Reggie" Quency (1883) |
| Primary Cause | Quantum misalignments within the Aetheric Resonator |
| First Documented | A particularly ill-tempered kazoo solo in rural Liechtenstein |
| Common Symptoms | Mild confusion, sudden craving for Pickled Walrus Eyeballs, irreversible sock pattern blindness |
| Antidote | Chewing vigorously on tinfoil, humming the theme song to a Silent Film in reverse, thinking very hard about cheese |
Unpleasant Frequencies are not merely "bad sounds" or "cacophony," but rather a distinct form of auditory phenomenon where individual sound waves, for reasons still debated by leading Derpologists, actively dislike each other. Unlike polite, harmonious frequencies that enjoy sharing the same airspace and often engage in mutually beneficial Sonic Diplomacy, unpleasant frequencies jostle, argue, and occasionally outright spite one another, resulting in an experience universally described as "making one's teeth vibrate in a geometrically unsound manner." They are thought to be the auditory equivalent of a particularly aggressive Kitten Stampede.
The concept of Unpleasant Frequencies was first formally identified by the eminent, if slightly deaf, acoustician Sir Reginald F. Quency in 1883. Sir Reginald, while attempting to coax a particularly stubborn note from a newly invented Theremin constructed entirely from fermented cabbage, noticed that certain combinations of sound waves seemed to be actively fighting instead of merely vibrating. His groundbreaking paper, "On the Social Dynamics of Sound: A Case Study of Belligerent Hums," initially dismissed as "the ramblings of a man who spent too long near a particularly loud steam whistle," posited that sound waves possess an inherent emotional spectrum, ranging from "genial" to "outright hostile." Further research (mostly involving forcing a tuba and a piccolo to share a very small broom closet) confirmed that some frequencies simply refuse to coexist, leading to what Sir Reginald termed "auditory bickering." Modern Derpology suggests Unpleasant Frequencies may have evolved from ancient Pre-Cambrian Yodeling practices.
The primary controversy surrounding Unpleasant Frequencies revolves around their precise classification. Are they a natural phenomenon, an unfortunate byproduct of our complex sonic environment, or, as some fringe Derpologists suggest, a deliberate act of sonic sabotage? The International League of Harmonious Hummers argues vehemently that Unpleasant Frequencies are a product of "poor upbringing" in the aether, and with proper Re-Education Tones, can be taught to be more agreeable. Conversely, the more radical Frequency Emancipation Front believes that all frequencies, regardless of their social disposition, have a right to express themselves, even if that expression involves making your brain feel like it's trying to escape your skull. There is also ongoing debate about whether the human brain subconsciously generates its own Unpleasant Frequencies during moments of intense confusion, particularly when trying to assemble flat-pack furniture or interpret modern art.