Reaching the Next Dimension In D Telegenic Truck

Reaching The Next Dimension In 3D Telegenic Truck

Telegenic, the independent UK outside broadcast services company, has installed a digital SoundField microphone and upmix processor in its new 3D OB vehicle, which entered service in the Spring. The 3D truck has been generating live coverage in 3D on a variety of sporting events for European satellite broadcaster BSkyB.

The Sound control room in Telegenics new 3D OB vehicle,

with the DSF-3 visible above the Front Right speaker.

Sky has been one of the pioneers of high-definition broadcasting in Europe, offering HD visuals with 5.1 surround sound since early 2006 - but now theyve already moved to the next level, with regular broadcasts in 3D going out since earlier this year, including 3D coverage of the recent World Cup. A number of outside broadcast trucks have been commissioned from Skys regular OB service partners in the UK to meet this need, and several have already been in service since mid-Spring. One such is Telegenics new 3D OB vehicle, which has been in use on transmissions for Sky since April, offering visuals in 3D and sound in full 5.1.

As with all OB units destined for use on Sky broadcasts, the main surround microphone in the Telegenic 3D truck is SoundFields digital DSF-2, together with the UK mic companys digital 5.1 surround processor, the DSF-3. This combination produces a completely phase-coherent, all-digital 5.1 soundscape which can be downmixed for stereo transmissions to older receivers without creating phase problems. "The new 3D truck is our fourth to feature SoundFields equipment," comments Dave Rowley, Telegenics Head Of Sound. "It made perfect sense to Sky, and to us, to use the DSF-2 and DSF-3 to generate the 5.1 sound in the new 3D truck, as that combination has been working so well in our SD and HD trucks. Since the 3D truck entered service, weve been using the SoundFields mainly for 3D coverage of live cricket and football. Shortly, though, well be starting on the Rugby Union and Rugby League, and also darts."

Also on board the new Telegenic 3D truck are two SoundField UPM-1 upmix processors, which are capable of producing downmix-compatible, phase-coherent surround from a two-channel stereo. "These are relatively new," explains Dave Rowley. "We bought them for situations where our truck is acting as the master broadcast hub for an evenings sport, where we might have to accept transmissions from another broadcaster and relay them back to Skys transmission centre. When were accepting broadcasts in this way from other parts of Europe - our coverage of the Heineken Rugby Cup is a good example of this - quite often the audio is still coming to us in stereo, and of course we dont really want to be outputting part of an evenings programming in stereo now if we can avoid it, especially now that the visuals are in 3D. The UPM-1 allows us to create a natural-sounding 5.1 from this kind of stereo input. Since the truck entered service, weve also been using the UPM-1s on VT output - archive material or clips packages which only ever had audio in stereo - with great success."

The only limiting factor for Telegenic over the Summer has been that they have only had the one 3D truck; however, a second 3D unit, which will share the workload, is currently undergoing integration at Sonys Basingstoke headquarters. Perhaps unsurprisingly, it too will feature the SoundField DSF-2/DSF-3 combination, together with a pair of UPM-1 upmixers. "Its a proven combination," explains Dave Rowley, "and weve found the SoundFields a delight to use. Were very happy to continue with them."

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