Quality Aspects in Digital Broadcasting and Webcasting Systems: Bitrate versus Loudness

Abstract

Abstract-In this paper the quality aspects of bitrate and loudness in digital broadcasting and webcasting systems are examined. The authors discuss a survey concerning user preferences related with processing and managing audio content. The coding efficiency of a popular audio format is analyzed in the context of storing media. An objective study on a representative group of signal samples, as well as a subjective study of the perceived quality of real-time broadcasted and webcasted radio programs are performed.Keywords-broadcast technology, mobile communication, quality of experience, quality of service, webcast technology, wireless communication.

International Journal of Electronics and Telecommunications

“…Based on the analysis of the results (Figs. [11][12][13][14][15], it can be stated that taking into account the third transmitter, from which the field strength is lower by 10-20 dB, causes that the channel produces small, very frequent fades. It is also clear that the greater the difference in paths between the transmitters, the more fades will occur.…”

“…Many publications were devoted to methods of determining network gain and coverage in the SFN network compared to these obtained in MFN (Multi-Frequency Networks) [6], the impact of coding efficiency and network gain on coverage [7] and testing the quality of the audio signal received in the DAB+ network [8,9,10], comparing this quality to streaming [11,12]. Due to the sum of signal strengths transmitted in the SFN network, an increase in the signal level at the output of the receiving antenna should be expected in relation to the level when this antenna receives the signal from only one transmitter.…”