The Bark frequency scale aims at having a more natural fit with spectral information processing in the ear than the linear frequency scale. The Bark scale ranges from 1 to 24 Barks, corresponding to 24 critical bands:  Source: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Bark_scale.png) To convert a frequency _f_ (Hz) into Bark: $ B(f) = 13 \arctan (0.00076f) + 3.5 \arctan \left( \left(\frac{f}{7500} \right)^2\right) $ The analysis of the [[power spectrum]] of a speech signal using the Bark frequency scale allows for a more accurate representation of how different frequencies contribute to the overall perception of speech.