Abstract
The Influence of the Bitrate Level on the Subjective Sound Quality Perception of the Concatenated Non-Entropic Audio Coding Algorithms in the Digital Broadcasting Chain
Highlights
The use of a new technical standard for radio broadcasting, Digital Audio Broadcasting (DAB+) [1,2,3,4], is currently expanding intensively in Europe
The test confirmed that when the recommended bitrates are used for the relevant audio codecs, high subjectively perceived sound quality is achieved in all instances
The sound in digital radio broadcasting is inevitably associated with lossy psychoacoustic compression
Summary
The use of a new technical standard for radio broadcasting, Digital Audio Broadcasting (DAB+) [1,2,3,4], is currently expanding intensively in Europe. DAB+ and generally all similar systems for digital broadcasting (DAB, DAB+, DRM, DRM+, HD Radio, CDR, DVB-T, DVB-T2 [8], DVB-S / DVB-S2) are based on the use of lossy, non-entropic audio codecs The algorithms of these codecs work with relatively low bitrates. The main contribution of this paper is: The verification of the relationship of subjective perception of the sound quality and the bitrate level in the digital broadcasting chain, using concatenated audio coding algorithms. The wellknown MP3 format [17] is included in the following overview
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