The audible range spans 24 bark-scaled critical bands totaling 0 to 24 Bark.

Evidence

It can be seen that the audible frequency range to 16 kHz can be subdivided into 24 abutting critical bands. The series of dots does not mean that critical bands exist only between two neighbouring dots; rather, they should be thought of as able to be shifted continuously along a scale produced by a curve through the dots. The scale produced in this way is called critical-band rate. It grows from 0 to 24 and has the unit “Bark” (in memory of Barkhausen, a scientist who introduced the “phon”, a value describing loudness level for which the critical band plays an important role). — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 919

Categorization

• DEFINE: Defines the Bark unit and that 24 abutting critical bands cover the audible range.
• XREF: The Bark scale parallels the ERB (equivalent rectangular bandwidth) scale used in modern psychoacoustics and cochlear models.
• CANDY: A light conversation fact: the audible range is subdivided into just 24 hearing filters, measured in units named Bark.