Transmission Quality Measurements in DAB+ Broadcast System

Gilski, Przemysław; Stefański, Jacek

doi:10.1515/mms-2017-0050

Cited by 4 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At that time, the multiplex offered 12 services, among which 10 included audio programs (transmitting speech and/or music signals), whereas two were only data services. Additional information on transmission, frame structure, error correction coding, and related signal measurements in the DAB+ radio system may be found in [42,43]. As shown, the bitrate did change when it comes to some programs.…”

Section: Multiplex Configurationmentioning

confidence: 99%

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

View full text Add to dashboard Cite

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.

show abstract

Section: Multiplex Configurationmentioning

confidence: 99%

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

View full text Add to dashboard Cite

show abstract

“…Each modification in the broadcast chain, from content creation to a particular hardware setup on the end user side may introduce some unexpected issues to the transferred audio signal. Also, numerous factors of propagation channels and digital standards can affect broadcast signals [1]. The traditional method of validating the quality of a real audio content is to perform subjective listening tests.…”

Section: Introductionmentioning

confidence: 99%

Metrology and Measurement Systems

Organiściak,

Borkowski

2020

View full text Add to dashboard Cite

The paper examines the usage of Convolutional Bidirectional Recurrent Neural Network (CBRNN) for a problem of quality measurement in a music content. The key contribution in this approach, compared to the existing research, is that the examined model is evaluated in terms of detecting acoustic anomalies without the requirement to provide a reference (clean) signal. Since real music content may include some modes of instrumental sounds, speech and singing voice or different audio effects, it is more complex to analyze than clean speech or artificial signals, especially without a comparison to the known reference content. The presented results might be treated as a proof of concept, since some specific types of artefacts are covered in this paper (examples of quantization defect, missing sound, distortion of gain characteristics, extra noise sound). However, the described model can be easily expanded to detect other impairments or used as a pre-trained model for other transfer learning processes. To examine the model efficiency several experiments have been performed and reported in the paper. The raw audio samples were transformed into Mel-scaled spectrograms and transferred as input to the model, first independently, then along with additional features (Zero Crossing Rate, Spectral Contrast). According to the obtained results, there is a significant increase in overall accuracy (by 10.1%), if Spectral Contrast information is provided together with Mel-scaled spectrograms. The paper examines also the influence of recursive layers on effectiveness of the artefact classification task.

show abstract

DAB+ Coverage Analysis: a New Look at Network Planning using GIS Tools

Kulawiak

Falkowski-Gilski

2018

2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA)

View full text Add to dashboard Cite

Transmission Quality Measurements in DAB+ Broadcast System

Cited by 4 publications

References 7 publications

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

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

Metrology and Measurement Systems

DAB+ Coverage Analysis: a New Look at Network Planning using GIS Tools

Contact Info

Product

Resources

About