Summary: Theoretical methods and algorithms of digital signal processing, as well as certain approaches to the practical implementation of the experiments in industrial and laboratory measurements and tests are considered, based on utilization of ZETLab hardware-software complex. An example of real-time evaluating the spatial coordinates for the source of low-intensity vibration (noise disturbance) is provided. The concept of virtual device serves as the foundation in planning and implementing the experiment; note that the actual hardware components, i.e., seismometers and analog-to-digital converters, are involved in the process, having PC interface as a certain link among the measurement object, mathematical framework and operator. The suggested method of coordinate evaluation operates according to the logic based on spectrum and correlation analysis of the signals, with subsequent data visualization via reciprocal projection technique.