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Encyclopedia > Bark scale

The Bark scale is a psychoacoustical scale. Psychoacoustics is the study of subjective human perception of sounds. ... In music, a scale is a set of musical notes in order by pitch, either ascending or descending. ...


The scale ranges from 1 to 24 and corresponds to the first 24 critical bands of hearing. The subsequent band edges are (in Hz) 0, 100, 200, 300, 400, 510, 630, 770, 920, 1080, 1270, 1480, 1720, 2000, 2320, 2700, 3150, 3700, 4400, 5300, 6400, 7700, 9500, 12000, 15500. Critical bands are frequency ranges in which one pitch will mask another pitch. ... Hearing, or audition, is one of the traditional five senses, and refers to the ability to detect sound. ... The hertz (symbol: Hz) is the SI unit of frequency. ...


It is related to, but somewhat less popular than the mel scale. The mel scale, proposed by Stevens, Volkman and Newman in 1937 is a perceptual scale of pitches judged by listeners to be equal in distance from one another. ...


To convert a frequency f into Bark use:

Bark = 13arctan(0.76f / 1000) + 3.5arctan((f / 7500)2).

or (traunmuller 1990)

Criticalbandrate(bark) = [26.81 / (1 + 1960 / f)] − 0.53 with f in Hz.
 if < 2 add 0.15*(2-result) 
 if > 20.1 add 0.22*(result-20.1) 
Criticalbandwidth(Hz) = 52548 / (z2 − 52.56z + 690.39) with z in bark.

External links

  • Smith and Abel - Bark and ERB Bilinear Transforms (1999)
  • http://www.ling.su.se/staff/hartmut/bark.htm

  Results from FactBites:
 
Highbeam Encyclopedia - Search Results for Bark scale (1536 words)
Injured or diseased parts are first removed (even small cavities in the bark may harbor injurious fungi and insects), the surfaces are treated with antiseptics and healing aids, and the cavity may be filled with...
Ma'at was the daughter of Re, the sun god, and she stood at the head of his bark as it traveled through the sky and the underworld.
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