In this master’s thesis, the design of a virtual sound level meter and the development and construction of a sound intensity measurement probe are presented. The thesis begins with a theoretical discussion of the key functions of sound level meters, the methodology of sound intensity measurement using a probe, and the relevant measurement principles. This is followed by a detailed review of the design, assembly, and evaluation of the printed circuit board, which functions as a microphone preamplifier and a communication interface in the final system. The subsequent part presents the software implementation of the sound level meter with its key functionalities, realized as a virtual instrument in the LabVIEW programming environment. The final part of the thesis addresses the modeling and construction of the measurement probe and its software integration into the existing virtual instrument, and provides both a description and an evaluation of the measurements carried out.
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