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UEFA Referees Analyse Matches with Bel Monitors


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UEFA, the European governing body for association football, has taken delivery of four Bel Digital Audio monitors/de-embedders to aid in the training of their top-flight referees. The Bel BM-A2-E16SHD devices are being used in the video reviewing of football matches and the decisions taken during the games.

UEFA has just taken delivery of four Bel BM-A2-E16SHD units at their Nyon headquarters in Switzerland. The devices are being used as an integral part of the training process for UEFA’s referees. The Bel monitors and de-embedders are being used to extract the channels of the audio feed from the incoming SDI video feeds containing the commentary but retaining crowd noise and other ambient sound from the game. This enables the trainers and the delegates to analyse decisions taken, to make their own decisions and to discuss incidents without any external influences which might alter someone’s perception of the moment. The versions of the units being used by UEFA can also decode Dolby® E, Dolby® Digital and Dolby® Digital Plus material from any of the AES inputs, or from embedded audio data within the SDI bitstreams.

More commonly to be found in the critical broadcast path, the Bel units are comprehensively featured and provide visual monitoring of de-embedded audio by 16 individual, high quality, three colour, front panel mounted bargraphs, whilst audible monitoring is provided by a tuned three speaker system. A comprehensive range of inputs and outputs are provided as standard. There are two SDI inputs alongside 8 AES audio pairs and 8 analogue inputs. The device provides auto-selection of 3G, HD and SD or SDI bitstreams and decodes as appropriate. Switching between inputs is accomplished by use of the simple, front mounted rotary controls.

All 16 audio channels present on the front panel bargraphs are also available as AES-3 outputs on the rear of the unit, therefore enabling the monitor to de-embed all 16 audio channels from any SDI stream. In addition, a re-clocked SDI loopthrough and 8 analogue outputs (with front panel level control) are provided.

Using the rotary control, the user can monitor any channel and can create combinations and groups. The bargraph meters are switchable between all available channels and inputs. Each meter features adjustable colour transition points and a peak-hold facility. The ballistics are user assignable and seven standard scales are available to choose from, Nordic, BBC PPM, DIN PPM, VU, VU Ext., AES/EBU.