  Method for precise measurements of the ellipticity and rotation of the
polarization of a transverse ultrasonic wave is presented. It is applicable for
investigating the acoustic analogs of the Faraday, Cotton-Mouton, and Kerr
effects. The technique consists of measuring amplitude of the voltage on the
receiving piezoelectric transducer at a certain magnetic induction B, relative
to an initial one using three different positions of the transducer with futher
processing the data with the formulars given in the paper.
