Single-transmitter setup on nonlinear mixing to measure acoustic nonlinearity of first order

摘要

In this study, the acoustic nonlinearity of water was investigated using a variation of the collinear wave mixing method. One single transducer, driven at two different frequencies f and f, was used to generate a third frequency component at f - f, f + f, 2f and 2f. Such a configuration allows to cancel out system nonlinearities since no amplification of the signal beyond 10V is needed. Perturbation solutions of nonlinear parameter in water are analytically calculated and validated with experimental measurements.