Subjective and Objective Comparative Study of DAB+ Broadcast System

Gilski, Przemysław; Stefański, Jacek

doi:10.1515/aoa-2017-0001

Cited by 14 publications

(10 citation statements)

References 7 publications

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“…is the appropriate choice and setting of the audio encoding. The goal was to ensure efficient operation while keeping a high subjectively perceived sound quality [17], [18]. The assumptions were verified by blind listening tests.…”

Section: Dab+ Headend Configurationmentioning

confidence: 99%

The Digital Audio Broadcasting Journey from the Lab to Listeners - the Czech Republic Case Study

Zyka¹

2019

RADIOENGINEERING

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This paper describes the complex experiences and the results of the Digital Audio Broadcasting (DAB+) implementation in the conditions of the Czech Republic. It analyses the background of the EUREKA 147 program, its targets, and to what extent they were reached. The main focus is concentrated on the evaluation of the real steps which had to be done during the implementation process before the first regular broadcasting could be started and the difficulties encountered. The key point became experimental broadcasting "DAB Prague". It demonstrated the advantages of this new platform and gave the opportunity to test its functions and physical behavior in real conditions, under the different parameter settings. The important issue is the allocation of the band III by the National Regulatory Authority and the capacity of DAB+ multiplexes. The paper also demonstrates the experience from the setup of the DAB+ headend. It describes the content solution in context of using non-entropic audio coding, setting the codec algorithms and the way to use accompanying multimedia services. The results of the tests and measurements presented in this paper were used in the real project of the regular nationwide DAB+ network.

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Section: Dab+ Headend Configurationmentioning

confidence: 99%

The Digital Audio Broadcasting Journey from the Lab to Listeners - the Czech Republic Case Study

Zyka¹

2019

RADIOENGINEERING

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“…A subjective and objective study, concerning the comparison of real-time simulcasted FM and DAB+ radio programs in Poland, along with AAC-processed speech and music signal samples (bitrates ranging from 64 to 160 kbps, with a step of 32 kbps), is described in [25]. In this work, the authors analyzed whether the quality of DAB+ surpasses the quality of FM radio.…”

Section: Related Workmentioning

confidence: 99%

“…The observed difference ranges from 0.02 (Arts-broadcasted in DAB+ at 128 kbps) and 0.05 (Pop Musicbroadcasted in DAB+ at 128 kbps) to 0.77 (Regional PL-broadcasted in DAB+ at 112 kbps). Moreover, a comparison has been performed by considering the results published in 2017 [25], including the same group of radio programs as well as the same number of individuals, namely 45 According to obtained results, all scores favor the digital system. The observed difference ranges from 0.02 (Arts-broadcasted in DAB+ at 128 kbps) and 0.05 (Pop Musicbroadcasted in DAB+ at 128 kbps) to 0.77 (Regional PL-broadcasted in DAB+ at 112 kbps).…”

Section: Quality Evaluation Studymentioning

confidence: 99%

“…The observed difference ranges from 0.02 (Arts-broadcasted in DAB+ at 128 kbps) and 0.05 (Pop Musicbroadcasted in DAB+ at 128 kbps) to 0.77 (Regional PL-broadcasted in DAB+ at 112 kbps). Moreover, a comparison has been performed by considering the results published in 2017 [25], including the same group of radio programs as well as the same number of individuals, namely 45, participating in the listening study. The results are shown in Figure 2.…”

Section: Quality Evaluation Studymentioning

confidence: 99%

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Digital Transformation of Terrestrial Radio: An Analysis of Simulcasted Broadcasts in FM and DAB+ for a Smart and Successful Switchover

Falkowski-Gilski

2021

Applied Sciences

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The process of digitizing radio is far from over. It is an important interdisciplinary aspect, involving Big Data and AI (Artificial Intelligence) when it comes to classifying and handling content, and an organizational challenge in the Industry 4.0 concept. There exist several methods for delivering audio signals, including terrestrial broadcasting and internet streaming. Among them, the DAB+ (Digital Audio Broadcasting plus) system is one of the leading standards of terrestrial digital radio transmission. Compared with analog FM (frequency modulation) radio, it is more bandwidth efficient and offers greater possibilities when it comes to delivering content and forming an ensemble and multiplex. Currently, many countries worldwide, particularly European States, are still making adjustments in order to perform an efficient switchover from analog FM to digital DAB+ radio. This paper presents the current situation of the digital radio market as well as the results of a subjective quality evaluation study and questionnaire concerning broadcasting in both digital and analog techniques. It involves radio programs, transmitting both speech and music signals, simulcasted in DAB+ and FM standards. It also presents the development of the national multiplex. The results of this study may help both researchers and scientists as well as policy makers and professionals active in the field of broadcasting and electronic media and not to mention the consumption of multimedia content.

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“…The speech signal samples were processed in 5 different bitrates, namely: 8 kbps, 16 kbps, 24 kbps, 32 kbps, and 48 kbps. Previous studies concerning delivering speech audio signals showed that a bitrate of 48 kbps-64 kbps enables to deliver high-quality commercial services [6]- [8]. Additional information on speech signal processing may be found in [9].…”

Section: A Signal Samplesmentioning

confidence: 99%

Quality Evaluation of Voice Transmission Using BPL Communication System in MV Mine Cable Network

Debita¹,

Falkowski-Gilski²,

Habrych³

et al. 2019

ELEKTRON ELEKTROTECH

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This article presents results of a quality evaluation study, considering voice transmission in a 6 kV medium voltage cable network using the BPL (Broadband over Power Line) communication system. The tests are carried out under real mining conditions for the selected power cable without voltage, earthed at both sides. Such a method of monitoring work conditions is of great importance, especially during a disaster. Power cables are potentially resistant to mechanical damage and, thus, ensure continuity of transmission, also, in cases of electricity stoppage and partial damage (interruption) of the phase conductors. The voice transmission quality is tested for a relatively low bitrate of 8 kbps–48 kbps using both induction and mixed induction-capacitive coupling with the power cable. Such a solution should provide both reliable and high-quality services, considering clear and understandable voice messages to people. The quality evaluation is carried out on a group of 15 people aged between 25–35 years old. The tested signal samples consist of voice messages in British English, German, and Polish. On the basis of the investigated results, respective conclusions are formulated.

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Subjective and Objective Comparative Study of DAB+ Broadcast System

Cited by 14 publications

References 7 publications

The Digital Audio Broadcasting Journey from the Lab to Listeners - the Czech Republic Case Study

The Digital Audio Broadcasting Journey from the Lab to Listeners - the Czech Republic Case Study

Digital Transformation of Terrestrial Radio: An Analysis of Simulcasted Broadcasts in FM and DAB+ for a Smart and Successful Switchover

Quality Evaluation of Voice Transmission Using BPL Communication System in MV Mine Cable Network

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