Main Page | See live article | Alphabetical index The equivalent rectangular bandwidth or ERB is a measure used in psychoacoustics. Researchers have derived a differential equation giving the ERB value in Hz of a human auditory filter with a center frequency of kHz Solving this equation gives roughly the following relation between the ERB value and the frequency in Hz: Or the converse: This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.