k-Wave Toolbox

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

Outputs

c_kk

variation of sound speed with w [m/s]

Examples