(07/08/2014) It was one of those gigs where nothing can be allowed to go wrong. The World Cup Concert at the HSBC Arena in Barra de Tijuca was due to be broadcast delayed-live to more than 50 countries within hours of finishing, starting with China. The concert starred Pl cido Domingo, Lang Lang, Puerto Rican soprano, Ana Mar a Mart nez, the Brazilian Symphony Orchestra and Opera Chorus and local singing sensation, Paula Fernandes made a surprise appearance. The musical feast featured highlights from Domingo's extensive operatic repertoire married with songs from Broadway, operetta, Zarzuela and popular music from around the world.
The renowned production company, Bernhard Fleischer Moving Images was retained to ensure a top quality result and they entrusted the audio production to Grammy Award winner, Jesse Lewis who had been their partner on several previous occasions. The planning was meticulous and clear instructions were sent ahead; input lists were done, MADI splits were arranged, cabling specified and all the equipment was organized to be there. Brazil presents some challenges for importing equipment so some of it, including the Merging Horus units, was shipped from Europe. Jesse Lewis always uses Pyramix for the recording so plans were in place to record at 96 kHz with one Horus on stage and the other in the truck. And, it always goes according to plan except when it doesnt.
The weather at JFK delayed Jesse's flight to Rio by one day, cutting the preparation time in half. When he finally arrived, the OB Van location had needed to be moved an additional 50 meters to accommodate construction for the 2016 Olympics. This extended the copper cable runs to about 100 meters; on the limit for both coaxial MADI and gigabit Ethernet. The cables they were able to acquire on short notice would be below spec (100 meters of fiber MADI wasnt an option on 6hrs notice); every vendor was completely bereft of stock because of the World Cup. There was an option of either slightly longer cable runs without electrical interference or shorter ones with a high probability of problems; longer runs without interference were obviously chosen. Both RAVENNA and coaxial MADI were run to provide redundancy but nobody could speculate which would work. The team connected redundant MADI streams from the DiGiCo racks, one for each Horus. One Horus was installed in the rack with the DiGiCo, with short coaxial MADI cables feeding it, and a long CAT6E RAVENNA feeding the truck. The other Horus was placed in the truck and received the pair of long coaxial MADI.
Jesse Lewis takes up the story; We knew ONE of them had to work. We looked first at the MADI connections in anticipation of green lights - signal? Lock? MADI had nothing, blank. Checked the connections, checked them again. Moved them just in case nothing. Moved them back - still nothing. We moved to Ravenna, our only hope. Green. Lock. PTP means Precision Time Protocol and the light was green! From DiGiCo, two coaxial MADI connections fed 128 audio channels to our Horus unit, which in turn fed the RAVENNA network on 100 meters of CAT6E. Flawless. Thank God for Horus and the RAVENNA network. I can't think of any other I/O unit with this flexibility.
The Horus also allowed for routing of the MADI signal in 8-channel blocks to overcome some limitations of the Studer Vista 5 MADI input. It was also discovered that the truck was not able to cope with a 96 kHz recording so it was switched to 48 kHz without compromising the final transmission. The two 56-channel coaxial MADI streams from the DiGiCo were fed from the Horus via RAVENNA and then to the Studer console on a pair of 64-channel MADI fiber streams allowing the recording of all signals to hard disk. The Pyramix recorders were perfectly reliable, and even allowed for some convenient remixing prior to the delayed-broadcast a few hours later.
The stress was unimaginable, but so was the relief of Pyramix and RAVENNA in action. I hardly had time to worry about the rain and the mosquitoes!
Merging Technologies SA is a Swiss manufacturer with over 20 years of experience in developing groundbreaking, professional Audio and Video products for a wide range of entertainment and media industries. With a dedicated user base in the elite end of the music, film, television, mastering and performances industries, Merging is committed to developing product ranges with unrivalled quality and flexibility, no matter what the application. Merging builds tools for people who want more from their systems, have a inherent need to push boundaries, and believe that quality always comes first, every time.
RAVENNA is a solution for real-time distribution of audio and other media content in IP-based network environments. Utilizing standardized network protocols and technologies, RAVENNA can operate on existing network infrastructures. RAVENNA is designed to meet the strict requirements of the pro audio market featuring low latency, full signal transparency and high reliability and is fully AES67 compatible. With a capacity of nearly 8 x MADI streams over a single Gigabit Ethernet link, it is also the first and only Layer-3 based IP audio protocol with full support for high-channel count DXD and DSD signals.
While primarily targeting the professional broadcast market, RAVENNA is also suitable for deployment in other pro audio market segments like live sound, install market and recording. Possible fields of application include (but are not limited to) in-house signal distribution in broadcasting houses, theatres, concert halls and other fixed installations, flexible setups at venues and live events, OB van support, inter-facility links across WAN connections and in production & recording applications.
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(07/08/2014) It was one of those gigs where nothing can be allowed to go wrong. The World Cup Concert at the HSBC Arena in Barra de Tijuca was due to be broadcast delayed-live to more than 50 countries within hours of finishing, starting with China. The concert starred Pl cido Domingo, Lang Lang, Puerto Rican soprano, Ana Mar a Mart nez, the Brazilian Symphony Orchestra and Opera Chorus and local singing sensation, Paula Fernandes made a surprise appearance. The musical feast featured highlights from Domingo's extensive operatic repertoire married with songs from Broadway, operetta, Zarzuela and popular music from around the world.
