Edition: 2008-Q3

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Editorial
  "Unique Digital Radio" for Europe
Alberto Morello and Lieven Vermaele
   
Articles
  PEER-TO-PEER DELIVERY
  Technical trial of the EBU P2P media portal
  Franc Kozamernik (239 kB)
 

The EBU P2P Media Portal (EBUP2P) was developed as a demonstration tool for EBU Member organizations to show their television and radio channels internationally.

A 6-month trial of the portal was set up by EBU Project Group D/P2P in the first half of 2008 to evaluate P2P (Peer-to-Peer) technology – via the example provided by the company Octoshape. This article reports on the outcome of the trial.

   
  INTERNET TV
  MIRO — open and decentralized internet TV
  Dean Jansen (382 kB)
 

Miro is a free, open-source platform for Internet TV. Ideal for high-definition video, it features an open content guide with over 5,000 channels that can be freely subscribed to. The application boasts nearly 500,000 users and has been downloaded more than three million times in the last year.

Miro has been compared to Tivo, Firefox and iTunes; it functions as both a video library and a very intuitive system for subscribing to and watching internet video channels. Additionally, Miro can search and save videos from video-sharing sites, such as YouTube and Daily Motion.

   
  VIDEO COMPRESSION
  HDTV production codec tests
  Massimo Visca and Hans Hoffmann (808 kB)
 

To address the need for more efficient HDTV studio compression systems, vendors have recently introduced new HDTV studio codecs. In 2007, an EBU project group investigated these codecs and this article describes the methodology used for the tests and summarizes the results obtained.

   
  AUDIO COMPRESSION
  Dolby Pulse — combining the merits of Dolby Digital and HE-AAC
  James Caselton (194 kB)
 

In late 2007, Dolby Laboratories acquired Coding Technologies, the company which had developed techniques such as Spectral Band Replication (SBR) and Parametric Stereo (PS) for enhancing the efficiency of the Advanced Audio Coding (AAC) compression standard.

This article outlines how Dolby Laboratories, Inc. has now integrated HE-AAC into the Dolby family to create a new audio coding system – called Dolby Pulse – for broadcasting and other applications where bandwidth is restricted.

   
  DIGITAL TERRESTRIAL TELEVISION
  DTV transmitter power efficiency – new opportunities for reducing costs and environmental impact
  Keith Pruden (587 kB)
 

The worldwide introduction of digital terrestrial TV systems will lead to significant numbers of new transmitters being installed over the next few years. With the recent rise in energy prices, and increasing concerns over the environmental impact, it is important that these new transmitters are as energy-efficient as possible.

This article discusses various issues relating to the power efficiency of digital TV transmitters, and describes how Envelope Tracking technology could make a significant contribution to reducing the operational costs and environmental impact of new digital networks.