This paper presents new aspects of modern sound reinforcement system’s designing which came into view because of prevalence of digital technology. Basic structure of modern digital electro-acoustical system is explained at example of one has been installed at Wrocław Opera House. This article is focusing on some aspects connected to digital transmission of audio signals, proper audience area sound coverage, achieving smooth frequency response, obtaining directive propagation at low frequencies and controlling the system. Some measurement and tests about the topics presented in the paper have been done during the tuning of the system at Wroclaw Opera House. Attained results prove that it is possible to meet these targets.
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