acoustic signal


The authors investigated the effect of changes in the acoustic signal propagation speed and the accuracy of sensor positioning on the accuracy of sound source localization. The mean absolute error grows with the displacement of the microphones relative to the nominal coordinates (X, Y). The same trend is observed with an increase in the actual acoustic signal velocity deviation from the velocity under normal environmental conditions.

Method of determining the distance to the source of acoustic signals

The analysis of existing methods and means of application of acoustic signals in different branches of industry. Prospects for further development of theory and methods for improving information systems and devices determination of the distance to the source of acoustic signals based on their gradient and correlation processing have been shown. The proposed method of gradient-processing acoustic signal and information technology solving the problem of determining the distance to the source of acoustic signals.

Investigations of Cavitation Processes in Different Types of Emitters Using Sonochemical Analysis

The application limits of optical and sonochemical methods to determine the sizes of cavitation bubbles and their derivatives have been analyzed. The effect of cavitation fields generated using an ultrasonic magnetostrictive oscillator and jet hydrodynamic emitter on the parameters of their acoustic signals has been examined. The bubbles size depending on emitter type and parameters has been determined using sonochemical analysis. The character of the dependence was estimated according to Minnaert formula.