A.M. Bobreshov – Dr.Sc.(Phys.-Math.), Professor, Head of Department of Electronics, Dean of Faculty of Physics,

Voronezh State University

E-mail: bobreshov@phys.vsu.ru

I.S. Korovchenko – Ph.D.(Phys.-Math.), Associate Professor, Department of Electronics, Voronezh State University E-mail: korovchenko@phys.vsu.ru

A.V. Oleinikov – Post-graduate Student, Voronezh State University E-mail: ozverinka@gmail.com

The problem of experimental determination of the acoustic velocity of a crystal is considered. The paper gives a mathematical description of the measurement method. Two different measurement techniques are given, for systems with and without calibration. Requirements are obtained for the limiting measuring frequencies for a specified parameter of the intensity inhomogeneity, after which it is not expedient to carry out measurements. The results of numerical modeling of the intensity of diffraction when probing a crystal with a meander with a variable frequency of modulation are shown in the paper. The results were compared with experimental data.

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