The ERB operationalizes critical bandwidth into a calculable filter-centered quantity

Evidence

In order to make use of the notion of critical bandwidth practically, an equation relating the effective critical bandwidth to the filter center frequency was proposed by Glasberg and Moore (1990). They define a filter with an ideal rectangular frequency response curve that passes the same power as the auditory filter in question, which is known as the equivalent rectangular bandwidth, or ERB. The ERB is a direct measurement of the critical bandwidth, and the Glasberg and Moore equation that allows the calculation of the ERB for any filter center frequency is as follows: ERB = {24. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 579

Categorization

• DEFINE: Introduces the ERB concept and its defining equation for practical critical-bandwidth calculation.