# powerLawKramersKronig

Calculate dispersion for power law absorption.

## Syntax

    c_kk = powerLawKramersKronig(w, w0, c0, a0, y)

## Description

`powerLawKramersKronig` computes the variation in sound speed for an attenuating medium using the Kramers-Kronig for power law attenuation where `att = a0*w^y`. The power law parameters must be in Nepers / m, with the frequency in rad/s. The variation is given about the sound speed `c0` at a reference frequency `w0`.

## Inputs

`w` | input frequency array [rad/s]
`w0` | reference frequency [rad/s]
`c0` | sound speed at `w0` [m/s]
`a0` | power law coefficient [Nepers/((rad/s)^y m)]
`y` | power law exponent, where 0 < `y` < 3

## Outputs

`c_kk` | variation of sound speed with `w` [m/s]

## Examples

- Modelling Power Law Absorption

## See Also

`db2neper`