Surveillance and Quality Evaluation System for Real-Time Audio Signal Streaming

This paper deals with the design of an algorithm and application for an automatic system of real-time audio signal quality surveillance on personal computers. This system works without any knowledge of how the audio signal is processed. The audio signal quality and possible signal failures are monitored by being compared with the original signal in the time-frequency domain. The system supports several audio formats from mono to 5.1 and downmix for comparison between different audio formats. For high performance, SIMD technologies are used. The whole system consists of several local surveillance applications (clients) and a server application with SNMP client that monitors the local application states using the TCP/IP network.