Tieline i-Mix G3 Delivers IP Audio Gold at the Winter Games
For the past 2 months, Aussie audio engineer Al Craig has been holed up in the International Broadcast Centre (IBC) in Vancouver Canada working for the American television rights holder of the 2010 Winter Games. The rights holder has several methods of coverage, ranging from full-blown OB compounds with multiple production trucks and site sheds, through to what is called “Pure World” coverage - where there are no network technicians on site and only 2 announcers and a production assistant are required. It is these Pure World events that Al looks after.
Historical Overview of the i-Mix G3
i-Mix G3 IP Audio Codec
The i-Mix G3 codecs being used at the Games were purchased from Tieline Technology back in 2003. Al was at that time acting as a technical consultant for the 2004 summer Games rights holding network, and he was involved in helping to develop the first version of what is now known as the i-Mix G3 IP audio codec. The original codec was used at the 2004 Games over POTS and ISDN lines and its functionality has since been expanded to include connections over IP and wireless IP networks like 3G cellular broadband.
Today the i-Mix G3 is capable of sending high quality, low-delay live audio over wired LANs, WANs and the internet, 3G/3.5G wireless, POTS/PSTN, ISDN, X.21, GSM or B-GAN satellite networks.
IP Audio at the 2010 Winter Games
The codecs are used to send high fidelity bidirectional stereo IP audio over Ethernet connections and they provide highly customized communications to each announcer at the venues.
Each i-Mix G3 codec has been completely preconfigured prior to its deployment at each venue and can be fully remote controlled from the International Broadcast Centre (IBC) in Vancouver.
Al Craig at work in Vancouver, Canada
TieLine i-Mix G3 units operate in pairs. Unique individual profiles are written and managed by Al which contain the code that allows each unit to know “who” it is, “where” it is and “what” it is supposed to do.
Essentially, the units provide a stereo output at the other end of the connection. To control the units, Al uses 2 pieces of software. The Tieline Toolbox is initially used to write and load the profiles and then has a feature that allows Al to connect his laptop to the internet and shake hands with any (and all) of the units.
One of the features is that there is a virtual mixer, which allows Al to control the mic pre-amps at the venue from his desk. Therefore, he can control any of the units at any time. The other piece of software Al uses is the TLR300B graphic user interface (GUI). It is designed to work with another product (the Commander G3 Rack-mount codec), but it can also be used to control all of the mission critical features on the i-Mix G3.
Using his laptop Al can make changes to the codec settings, create connections, adjust input pads and even interrogate the line quality of the connection.
“The Tielines are remarkable," said Al. "They are extremely flexible and allow for a fair degree of customization depending on the needs of the production. They are simple to use, are very rugged (no maintenance has been required on any unit in the past 6 years) and sound amazing given the transportation methods involved.”
Watch a live demonstration of the i-Mix G3 by visiting http://www.tieline.com/videos/#4
The i-Mix and all other Tieline G3 IP audio codecs can be ordered for demonstration at any Tieline international office in the US, Netherlands, and Australia, or from any listed Tieline dealer at http://www.tieline.com/Contact-Us