KitPlus | Articles

The Loudness Issue in Todays Audio Systems

Complaints regarding audio being “too loud” have always existed. For example, the change from a television drama with little or no music or sound effects and quiet dialogue to a loud commercial can be quite jarring and will likely cause the viewer to reach for the volume control. This can happen when listening in mono, stereo or surround sound. The...

Submitted by Dennis Lennie

Published 01 January 2010

A Guide to Testing IPTV: Technologies and Challenges Par...

Throughout this article series we have seen that IPTV network operators face many challenges and explained that effective test and measurement is key to overcoming these challenges. The majority of IPTV networks are still in the early stages of development and operators are therefore primarily concerned with optimising QoS parameters in order to ge...

Submitted by Dennis Lennie

Published 01 December 2009

New Light in the Forbidden City

IBC 2009’s Production Village was the venue for the launch of a revolutionary new lighting product, the Rotolight ‘Stealth Edition’ RL48 ring-light. Although the show had more than 48,000 visitors and over 1200 exhibitors, Rotolight was listed in the TV-Bay lighting category, featured in the IBC News and the ‘Eye Catcher’ technology report on Amste...

Submitted by Dennis Lennie

Published 01 December 2009

SATIS in a day

Aware that several French distributors had pulled out of this year's SIEL & SATIS, I chunnelled to Paris on day two of the October 20-22 show with minimal expectations. The small size of the Guide de Visite (20 pages A5) added to my misgivings but the event itself proved respectably large, crowded and buzzing. Nearly 280 companies occupied stands i...

Submitted by Dennis Lennie

Published 01 December 2009

3D Movie Making: Stereoscopic Digital Cinema from Script...

Having indulged for several years in stereo photography of the hand-held cross-your-eyes variety, I was interested to watch the broadcast industry respond to the availability of increasingly affordable flat-panel 3D displays. A critical point in the price threshold has finally been crossed: fast-refresh-rate 22 inch 3D computer monitors using circu...

Submitted by Dennis Lennie

Published 01 November 2009

A Guide to Testing IPTV: Technologies and Challenges Par...

Testing IPTV NetworksThe Technology LifecycleThe deployment of new technologies tends to follow a similar lifecycle that begins with early research, development and standardisation and ends with full deployment and service management. The lifecycle diagram illustrated in Figure 5 shows a number of different technologies moving through the design an...

Submitted by Dennis Lennie

Published 01 November 2009

Mercedes-Benz Worlds winning formula, Online Creative and...

I set up Online Creative in 1999 after a number of years of linear editing and five years of post working for German non-linear editing manufacturer, FAST, during the pioneering days of digital video. The early 90s were a very exciting time editing with non-linear for the first time, although I haven’t done a linear edit since!Online Creative has g...

Submitted by Dennis Lennie

Published 01 October 2009

Lighting series

So far in this series, I have stressed some of my own preferences for good portrait lighting; using Fresnel lamps for key lights to enable accurate barn dooring, minimum spill light and an even ‘field’ of light. Open faced lamps, whilst cheaper, do not give the same control of light, they give rise to double shadows and are also prone to bubble fai...

Submitted by Dennis Lennie

Published 01 October 2009

A Guide to Testing IPTV: Technologies and Challenges Par...

Before we can go on to look at testing IPTV systems, it would be useful to provide an overview of the technologies involved. Network ArchitecturesFigure 3 shows an example of a typical IP network structure. Content is first delivered into the video headend; this can be done in a variety of formats over a number of different delivery mechanisms (e.g...

Submitted by Dennis Lennie

Published 01 October 2009

Converting for displays

Behind every great display there’s a great converter. Ever since television started to go digital in studios and post production, the number of digital formats has grown. For a while the television standards bodies got a grip and succeeded in pulling nearly everyone along the ‘SDI’ track; now itself expanded to HD-SDI and 3G-SDI – carrying a multit...

Submitted by Dennis Lennie

Published 01 September 2009

Ask the experts. Eye & Jitter

Why should TV broadcast engineers be interested in adding Eye and Jitter measurement to their T & M facilities?The call for Eye and Jitter as part of overall video test and measurement lies in the widespread adoption of serial digital interface (SDI) standards for broadcast. Unlike analog transmission in which the image quality gradually degrades a...

Submitted by Dennis Lennie

Published 01 September 2009

Eye to eye Picture displays and multiviewers 2009

The transition from cathode-ray tubes to flat-panel display devices for broadcast picture monitoring was a long time coming but is now almost complete. Grade 1 CRTs from suppliers such as Ikegami and Sony are still purchased in small numbers for monitoring in quality-conscious playout centres and post-production houses. For every other broadcast ap...

Submitted by Dennis Lennie

Published 01 September 2009

Ancillary Data Monitoring in Multiviewers

The broadcast environment has gone through enormous change over the last decade, creating challenges in the management, storage and broadcast of material. Factors contributing to these challenges include the increase in the number of channels with the move to digital, the introduction of various aspect ratio and video standards with the transition...

Submitted by Dennis Lennie

Published 01 September 2009

Top Gear Test Drive Hovercam

Hovercam were contacted to work on some new ideas for Top Gear back in January 2009. The production team were keen on trying new ideas to put a different perspective on the cars that are tested for performance around their test track at Dunsfold, Surrey. Typically the program has featured two-dimensional imagery of super cars, so the idea was to br...

Submitted by Dennis Lennie

Published 01 September 2009

How to choose a broadcast display

How to choose a broadcast display…10 years ago, buying a CRT monitor was simply a case of buying the latest version of your facilities favourite brand in either Grade I or II. The advent of the LCD, HD and the demise of the CRT means we have now to try and decipher all the marketing jargon to work out which display best fits our needs. To help de-m...

Submitted by Dennis Lennie

Published 01 September 2009