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The loudest band in the world is a subject of some dispute in musical circles. Many bands have claimed to be the loudest, measuring this in various ways including with decibel meters at concerts and by engineering analysis of the CDs on which their albums are published.
The decibel (symbol: dB) is a relative unit of measurement equal to one tenth of a bel (B). It expresses the ratio of two values of a power or root-power quantity on a logarithmic scale. Two signals whose levels differ by one decibel have a power ratio of 10 1/10 (approximately 1.26) or root-power ratio of 10 1/20 (approximately 1.12). [1] [2]
While 1 atm (194 dB peak or 191 dB SPL) [11] [12] is the largest pressure variation an undistorted sound wave can have in Earth's atmosphere (i. e., if the thermodynamic properties of the air are disregarded; in reality, the sound waves become progressively non-linear starting over 150 dB), larger sound waves can be present in other atmospheres ...
They found that the fish can generate noise levels of over 140 decibels, which is unusual for an animal of its size. ... which reaches 130 decibels, and an elephant, which can up to 125 decibels ...
Sounds at 120 decibels, comparable to an emergency vehicle siren, may cause discomfort to human hearing, according to the National Council on Aging.
Omni Directional 102 dB, 109 dB, and 112 dB at 100 ft. Rebranded versions of ACA's Screamers. The S-10 was not carried over when ACA became ASC. OM-117-AC Electro-Mechanical 15 8 1994–2004 Omni Directional 117 dB at 100 ft. Rebranded version of ACA's Banshee siren, only in the 8-port 15 HP version. OM-120-DC Electro-Mechanical 7.5 9
It is loud music meant for outdoor performance, ... Halat Hisar measured about 130 decibels, equivalent to hearing a jet aircraft taking off", [111] ...
When sensorineural hearing loss (damage to the cochlea or in the brain) is present, the perception of loudness is altered. Sounds at low levels (often perceived by those without hearing loss as relatively quiet) are no longer audible to the hearing impaired, but sounds at high levels often are perceived as having the same loudness as they would for an unimpaired listener.