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Equivalent rectangular bandwidth - Wikipedia, the free encyclopedia

Equivalent rectangular bandwidth

From Wikipedia, the free encyclopedia

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The equivalent rectangular bandwidth or ERB is a measure used in psychoacoustics.

Researchers have derived a differential equation giving the ERB value $v$ in Hz of a human auditory filter with a center frequency of $f$ kHz

$\frac{df}{dv} = 6.23 \cdot f^2 + 93.39 \cdot f + 28.52$

Solving this equation gives roughly the following relation between the ERB value $v$ and the frequency $f$ in Hz:

$v = 11.17268 \cdot \log\left(1 + \frac{46.06538 \cdot f}{f + 14678.49}\right)$

Or the converse:

$f = \frac{676170.4}{47.06538 - e^{0.08950404 \cdot v}} - 14678.49$

Retrieved from "http://en.wikipedia.org../../../e/q/u/Equivalent_rectangular_bandwidth.html"

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