Surveillance System for Audio Broadcast

This paper deals with algorithm design for an automatic surveillance system for the stereophonic audio broadcast and cross-platform implementation of this system, using the virtual studio technology (VST) and the audio streaming input/output (ASIO) technologies for real-time digital audio signal processing on personal computers. First, the parameters of the stereophonic audio signal monitored are specified and then the results of analyses are presented, which are made by a variety of methods of digital signal processing. To monitor the audio broadcast parameters, the following time and frequency domain analyses were mainly used: RMS and peak analysis, correlation analysis, differential analyses, fast convolution, and delta-spectrum analysis. The implementation of the system using the VST and ASIO technologies is described in the end of the paper