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

2021 ◽  
Vol 11 (23) ◽  
pp. 11114
Author(s):  
Przemysław Falkowski-Gilski
Keyword(s):  
Quality Evaluation ◽  
Evaluation Study ◽  
Digital Audio ◽  
Audio Signals ◽  
Policy Makers ◽  
Digital Radio ◽  
Internet Streaming ◽  
Music Signals ◽  
Radio Programs ◽  
Organizational Challenge

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.

scholarly journals Subjective and Objective Comparative Study of DAB+ Broadcast System

2017 ◽  
Vol 42 (1) ◽  
pp. 3-11 ◽  
Author(s):  
Przemysław Gilski ◽  
Jacek Stefański
Keyword(s):  
Comparative Study ◽  
Digital Radio ◽  
Analog To Digital ◽  
Audio Quality ◽  
Test Methodology ◽  
Fm Radio ◽  
Objective Quality ◽  
Music Signals ◽  
Radio Programs

Abstract Broadcasting services seek to optimize their use of bandwidth in order to maximize user’s quality of experience. They aim to transmit high-quality digital speech and music signals at the lowest bitrate. They intend to offer the best quality under available conditions. Due to bandwidth limitations, audio quality is in conflict with the number of transmitted radio programs. This paper analyzes whether the quality of real-time digital DAB+ broadcasted radio programs surpasses the quality offered by analog FM radio. We also perform a subjective and objective quality assessment comparative study of the HE-AAC v2 audio codec used in DAB+. The subjective studies were carried out using the MOS test methodology, whereas the objective tests were realized using the ViSQOLAudio metric. These studies were followed by a questionnaire concerning the migration from analog to digital radio domain.

Clinical practice guidelines for comprehensive patient assessment in emergency care: A quality evaluation study

2021 ◽  
pp. 205715852110069
Author(s):  
Åsa Falchenberg ◽  
Ulf Andersson ◽  
Birgitta Wireklint Sundström ◽  
Anders Bremer ◽  
Henrik Andersson
Keyword(s):  
Clinical Practice ◽  
Clinical Practice Guidelines ◽  
Practice Guidelines ◽  
Emergency Care ◽  
Quality Evaluation ◽  
Evaluation Study ◽  
Evidence Based ◽  
Patient Assessment ◽  
Care Needs ◽  
Home Based

Emergency care nurses (ECNs) face several challenges when they assess patients with different symptoms, signs, and conditions to determine patients’ care needs. Patients’ care needs do not always originate from physical or biomedical dysfunctions. To provide effective patient-centred care, ECNs must be sensitive to patients’ unique medical, physical, psychological, social, and existential needs. Clinical practice guidelines (CPGs) provide guidance for ECNs in such assessments. The aim of this study was to evaluate the quality of CPGs for comprehensive patient assessments in emergency care. A quality evaluation study was conducted in Sweden in 2017. Managers from 97 organizations (25 emergency medical services and 72 emergency departments) were contacted, covering all 20 Swedish county councils. Fifteen guidelines were appraised using the validated Appraisal of Guidelines for Research & Evaluation II (AGREE II) tool. The results revealed that various CPGs are used in emergency care, but none of the CPGs support ECNs in performing a comprehensive patient assessment; rather, the CPGs address parts of the assessment primarily related to biomedical needs. The results also demonstrate that the foundation for evidence-based CPGs is weak and cannot confirm that an ECN has the prerequisites to assess patients and refer them to treatment, such as home-based self-care. This may indicate that Swedish emergency care services utilize non-evidence-based guidelines. This implies that ECN managers and educators should actively seek more effective ways of highlighting and safeguarding patients’ various care needs using more comprehensive guidelines.

Storing and Transmission of Digital Audio Signals

2012 ◽  
pp. 109-131
Author(s):  
Srdjan Stanković ◽  
Irena Orović ◽  
Ervin Sejdić
Keyword(s):  
Digital Audio ◽  
Audio Signals

scholarly journals Quality Evaluation Study of Crushed Stone Powder by Fresh and Hardened Mortars Using as Parts of Fine Aggregates

2010 ◽  
Vol 48 (4) ◽  
pp. 18-26
Author(s):  
Y. Tsuji ◽  
T. Mano ◽  
F. Tomosawa ◽  
K. Yamamoto
Keyword(s):  
Quality Evaluation ◽  
Evaluation Study ◽  
Crushed Stone ◽  
Fine Aggregates

Digital Audio Broadcasting (DAB) in the Asia-Pacific Region: A Regional Perspective

1999 ◽  
Vol 91 (1) ◽  
pp. 33-42 ◽  
Author(s):  
David B. Soothill
Keyword(s):  
Asia Pacific ◽  
Quality Of Services ◽  
Pacific Region ◽  
Digital Audio ◽  
Asia Pacific Region ◽  
Digital Radio ◽  
Digital Audio Broadcasting ◽  
Satellite Broadcasting ◽  
The Impact

The Asia-Pacific is the world's largest region and it has a huge range of potential radio uses that analogue terrestrial broadcasting simply cannot meet. This article explores the impact that digital radio transmission will have on the region, and the importance of satellite broadcasting and multichannel broadcasting for better coverage and quality of services.

Storing and Transmission of Digital Audio Signals

2015 ◽  
pp. 141-163
Author(s):  
Srdjan Stanković ◽  
Irena Orović ◽  
Ervin Sejdić
Keyword(s):  
Digital Audio ◽  
Audio Signals

A Realization Method of Sound Gathering and Broadcasting System Based on TMS320VC5416DSP

2011 ◽  
Vol 71-78 ◽  
pp. 3110-3113
Author(s):  
Shi Sheng Jia ◽  
Mao Ying Zhou
Keyword(s):  
High Grade ◽  
Digital Audio ◽  
Serial Port ◽  
Audio Signals ◽  
Control Center ◽  
Control Interface ◽  
Chip Processing ◽  
Broadcasting System ◽  
Hardware Circuit ◽  
Code Standard

The sound gathering and broadcasting system in which the TMS320VC5416 is as the control center, the TLV320AIC23 as the codec and G.711 as coding standard is presented in this paper. The composition of the system, the design of the hardware circuit and the programming method of the software are proposed. The configuration mode of the Multichannel Buffered Serial Port (McBSP0 and McBSP1) of TMS320VC5416 and that of the control interface and the digital audio interface of the codec chip TLV320AIC23 are determined. The system realizes the storage and transmission of the digit audio signals well and obtains a high grade effect in time, with DSP chip processing the digit audio signals by means of the G.711 code standard.

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