Digital Audio Broadcasting

Digital Audio Broadcasting – radio now and for the future
F. Kozamernik (161 KB)

The world's first DAB services were launched in the United Kingdom and in Sweden at the end of September.

With several other broadcasters also preparing for the "big day", the author reports on the current status of DAB technology, and summarizes the progress being made to implement DAB services worldwide.

Personal reflections on the CEPT T-DAB Planning Conference: Wiesbaden, 3 – 21 July 1995
K.J. Hunt (244 KB)

Before terrestrial Digital Audio Broadcasting (T-DAB) services can be introduced, it is vital that suitable frequency blocks are allotted to each country, paying due regard to the possible interference that such services may receive from, or cause to, other existing services. In Europe, this planning task is the responsibility of the European Conference of Postal and Telecommunications Administrations (CEPT).

A CEPT T-DAB Planning Conference was held in Wiesbaden, Germany, from 3 to 21 July 1995. In this brief article, the author offers his personal reflections on what was achieved at this conference.

Data Processing

Data-processing and news-production systems of Bulgarian National Television
A. Deliysky, B. Simeonov and I. Baberkov (102 KB)

Bulgarian National Television is currently implementing an integrated data-processing system which operates on three hierarchical levels. Three large databases for mass use are maintained at the first (i.e. highest) level. At the second level, databases for local collective use are grouped together, and the third hierarchical level generates databases for personal use.

Another major project at the production centre in Sofia is the development and introduction of an electronic news-production system, linked to the 3-level data-processing system.

The first part of the article describes the architecture of the 3-level data-processing system. The major characteristics of the electronic news-production system are then described in the second part.