One of the types of objects in PRAAT.

An object of type BarkSpectrogram represents an acoustic time-frequency representation of a sound: the power spectral density *P*(*z*, *t*). It is sampled into a number of points around equally spaced times *t*_{i} and frequencies *z*_{j} (on a Bark scale).

The bark to hertz transformation is defined as:

hertz = 650.0 * sinh (bark / 7.0), |

while its inverse is defined as:

bark = 7.0 * log (hertz/650 + sqrt (1 + (hertz/650)^{2}). |

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Inside a BarkSpectrogram

With Inspect you will see that this type contains the same attributes a Matrix object.

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© djmw, October 23, 2014