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

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dc.contributor.authorZyka, Karel
dc.coverage.issue4cs
dc.coverage.volume29cs
dc.date.accessioned2021-04-30T12:26:28Z
dc.date.available2021-04-30T12:26:28Z
dc.date.issued2020-12cs
dc.description.abstractDigital Audio Broadcasting (DAB) and all similar systems for digital radio and television broadcasting are inevitably associated with lossy psychoacoustic audio compression. The coding algorithms are continuously being improved. To achieve high sound quality a lower bitrate, required by the broadcasters, is now sufficient. This paper compares the relevant digital audio codecs: MPEG 2 and AAC in three profiles (AAC LC, HE-AAC v1 and HE-AAC v2). The well-known MP3 format is also added for a better comparison. A brief description of the basic functional principles of the codecs is followed by a comparison of their efficiency keeping in mind the subjectively comparable sound quality. The main contribution of this paper is the verification of the relationship of the bitrate level and sound quality in broadcasting environment and the finding out the influence of other, often more significant factors, such as the primary quality of the input recordings and the concatenation of non-entropic coding, on the subjective perception in the digital broadcasting chain. These findings are supported by the results of a unique research analysis providing an insight into which specific audio encoding configurations are used for DAB+ radio broadcasting in practice, in Europe as a whole and in individual European countries.en
dc.formattextcs
dc.format.extent672-682cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2020 vol. 29, č. 4, s. 672-682. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2020.0672en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/196613
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2020/20_04_0672_0682.pdfcs
dc.rightsCreative Commons Attribution 4.0 International licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectDAB+en
dc.subjectDigital Audio Broadcastingen
dc.subjectpsychoacoustic compressionen
dc.subjectcodingen
dc.subjectMPEGen
dc.subjectMP3en
dc.subjectAACen
dc.subjectHE-AACen
dc.subjectSpectral Band Replicationen
dc.subjectParametric Stereoen
dc.titleThe Influence of the Bitrate Level on the Subjective Sound Quality Perception of the Concatenated Non-Entropic Audio Coding Algorithms in the Digital Broadcasting Chainen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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