Review of traveltime computation methods

We overview a wide range of traveltime computation methods, most of them novelties from the last five years or so. We first classify the methods, then we give a standardized description. This unified form allows a convenient comparison of these methods. Each description first outlines the basics principles of the given method. It then identifies its main features: assumptions made on the velocity model, strong points, and weak points. Finally, we attempt a quantitative rating of all the methods. The rating is based on geophysical and efficiency criteria.