In Broadcast September 2012 - 37

ISSUE 12 - SEPTEMBER 2012 | WWW.INBROADCAST.COM

InSOUND
Microphones In Action Cont.
Gerzon as a means to record spatial information in an audio scene, Ambisonics led to the development of specialist all in one microphones, including the SoundField (now in the TSL Professional Products portfolio – Editor) and Holophone ranges. These, as well as the mh acoustics Eigenmike array, are being used for 3D audio and picture projects today. Another take on immersive sound is the 22.2 format that accompanies Super Hi-Vision video. Both have been developed by NHK Science and Technology Research Laboratories and are regarded in some quarters as the next leap on from HD and 5.1 surround sound. During the London 2012 Summer Games the BBC shot highlights packages of selected events in Super Hi-Vision and 22.2 in conjunction with engineers from NHK. Three cameras and a special “Globe” microphone rig, which contains 22 microphones in its central ball and has two low frequency devices on arms either side, were moved between four of the Olympic venues to record a variety of events. Tim Plyming, Project Leader for the BBC’s Super Hi-Vision trials during the Games, says the aim was to give viewers in Super Hi-Vision viewing theatres in the UK, the US and Japan a sense of what it was like to be at the Games. Audio feeds were taken from all

22.2-channel Globe mic for Super Hi-Vision video

the host broadcast mics used for an event as well as the Globe rig, which is usually positioned near

the camera to give a sound picture of what was being seen. Signals were recorded both locally on to “several hundred” P2 cards and on a proprietary solid state recorder at BBC Television Centre (TVC) in west London. A ﬁnal mix was made on NHK’s custom built 600-channel Fairlight Constellation mixing desk, using only effects and PA commentary from the venue. This was then reproduced on 22.2 loudspeaker systems in the viewing theatres. ■ 37

SoundField’s DSF2 and DSF3 capture ambient surround sound

television television television television television television television television television The OPTIMOD 8685 television is Orban's second-generation television television televi Loudness Controller with television television Surround/ 2.0 Television sion television levision television AES input/output capabilities that include support telev i n television evisio television for SDI/HD-SDI up to television and optional Dolby-E 3.0 Gbit/s televisio television televi tele television decoding and encoding. sion tele television television television In addition to 7.1 television surround processing, or sio tele 5.1n elevision television television television the 8685 can simultaneously provide up to four television television television channels 2.0 or eight channels 1.0 audio processing television television vi television allowing it to provide all n the audio processing telev ion televisio le television television television television telev s o television te ev si televisio television el vision io television televi io televisi television e television televisio televisio television elevi ion v television television elev sio evi io vi television te ev si televisio television el vi io ion television telev si te evisio television el vi io television te ev si televisio television el vi io television television evisio evisio vi v i television tel i io television television e io television television television television television television

necessary

for

a

typical

ATSC

broadcast

with

multiple subchannels or language processing. The 8685 is dialnorm-aware. Loudness control is excellent when measured to the relevant loudness standards EBU R128, ITU-R BS.1770-2/1771, ATSC A/85 and ARIB or by the 8685's built in Loudness Meters allowing Television stations to comply effortlessly with legal requirements.

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OPTIMOD 8685

86852012_Lo_ibr2

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In Broadcast September 2012

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