Regarding phonon band structure calculation

[Jyotirmoy Deb]

Dear Sir/Madam,
I have calculated phonon band structure using ATK. I have got the plot for Energy versus high symmetry point. But in general frequency versus high symmetry point is reported in many papers.
Kindly tell me how to get the curve in terms of frequency.

[Petr Khomyakov]

You can convert energy units to frequency units such as cm^-1,  https://physics.stackexchange.com/questions/423969/how-to-convert-cm-1-to-ev. Note that you may  save the band structure data in txt-format.