Perceived Audio Quality Analysis in Digital Audio Broadcasting Plus System Based on PEAQ

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dc.contributor.authorUlovec, Karel
dc.contributor.authorSmutny, Miroslav
dc.coverage.issue1cs
dc.coverage.volume27cs
dc.date.accessioned2018-06-18T10:30:19Z
dc.date.available2018-06-18T10:30:19Z
dc.date.issued2018-04cs
dc.description.abstractBroadcasters need to decide on bitrates of the services in the multiplex transmitted via Digital Audio Broadcasting Plus system. The bitrate should be set as low as possible for maximal number of services, but with high quality, not lower than in conventional analog systems. In this paper, the objective method Perceptual Evaluation of Audio Quality is used to analyze the perceived audio quality for appropriate codecs --- MP2 and AAC offering three profiles. The main aim is to determine dependencies on the type of signal --- music and speech, the number of channels --- stereo and mono, and the bitrate. Results indicate that only MP2 codec and AAC Low Complexity profile reach imperceptible quality loss. The MP2 codec needs higher bitrate than AAC Low Complexity profile for the same quality. For the both versions of AAC High-Efficiency profiles, the limit bitrates are determined above which less complex profiles outperform the more complex ones and higher bitrates above these limits are not worth using. It is shown that stereo music has worse quality than stereo speech generally, whereas for mono, the dependencies vary upon the codec/profile. Furthermore, numbers of services satisfying various quality criteria are presented.en
dc.formattextcs
dc.format.extent342-352cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2018 vol. 27, č. 1, s. 342-352. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2018.0342en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/82992
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2018/18_01_0342_0352.pdfcs
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectObjective audio quality assessmenten
dc.subjectDigital Audio Broadcasting Plus (DAB+)en
dc.subjectPerceptual Evaluation of Audio Quality (PEAQ)en
dc.subjectMP2en
dc.subjectAAC codec familyen
dc.subjectnumber of servicesen
dc.titlePerceived Audio Quality Analysis in Digital Audio Broadcasting Plus System Based on PEAQen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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