Method of determining average inverse sound velocity

摘要

The invention relates to a method of determining the average inverse sound velocity (<1/c>) in an object (1) under investigation. According to the invention, for determining the sound velocity, reflection measurements at a diffuser (2) located in the object under investigation are carried out from at least two positions of one or more ultrasonic transducers (3 and 6) lying opposite each other. From the differences in echo times, the average inverse sound velocity can then be determined even if the position (xo) of the diffuser (2) is unknown. <IMAGE>