NOW! 12-13 - Telos

More documents

Recommendations

Info

AXIA | NETWORKING | TECHNOLOGY ARTICLE 96 EVOLUTION AoIP IN BROADCAST ENGINEERING This year we celebrate a decade since the irst public demonstration of AoIP. Does that seem too long a time? It’s not — although oficially revealed a year later in 2003, Livewire actually debuted at NAB in 2002. Sitting hidden inside <strong>Telos</strong> display furniture, it was secretly powering the demo of our SmartSurface mixing console. So it seems appropriate that we look back on how AoIP began and evolved, see where it has taken us today, and maybe take a peek into the future. PRO AUDIO OVER IP? THAT’S CRAZY! OR IS IT? By the late 1990’s, data networking was already present in everyday activities. There was a good selection of reasonably priced networking devices and cabling materials on the market, and connecting a basic ofice data network was a relatively easy, almost plug-and-play task, thanks to the huge effort that the computer and data networking industry had been making for many years. Radio broadcast facilities were no exception — on the ofice side, at least. But in the studio? Racks of tremendously expensive special-purpose equipment, and tons of cabling could still be found there. The equipment at the heart of broadcast radio was, back then, far behind that of the data networking industry. In October, 2000, Steve Church visited the Real-Time Systems laboratory at the University of Latvia, bringing with him an extremely interesting document: a technical outline of a completely new approach to building audio infrastructure for a modern radio broadcast facility, based on using standard Ethernet/IP-based protocols and off-the-shelf data network equipment. Two major misconceptions stood in the way of introducing modern data network technologies into broadcast applications; namely that Ethernet = Internet, and that PC Platform = MS Windows. In reality, Ethernet is capable of delivering huge bandwidth at excellent performance and very reasonable cost — switched-duplex Ethernet links do not suffer from the problems that are so common on the Internet. And x86 hardware was a universal high-performance processing device that could support sub-microsecond timing resolution. The OS was what slowed things down, not the hardware. Understanding these two fundamental facts allowed <strong>Telos</strong> to start one of the most ambitious R&D projects the radio broadcast industry has ever seen. Its successful implementation in just a few years opened the doors to a major technical breakthrough in many broadcast facilities all over the world. The work started in October of 2000, at the University of Latvia, and the beginning was rather academic. A team of highly skilled software and data networking experts started examining various performance aspects of the Linux operating system and switched Ethernet. Many hours of tricky experiments produced CPU/OS and Ethernet throughput estimates, multicast and QoS behavior test reports, network packet latency distribution graphs at different conditions, and more. a) b) c) datagram TIME 1 DGRAM delay DGRAM delay DGRAM delay TIME datagram 1 DGRAM delay DGRAM delay datagram datagram 2 3 datagram datagram datagram datagram 1 2 NFLOW-1 NFLOW t DGRAM delay DGRAM delay COMMAND DGRAM delay datagram 2 datagram NFLOW t DGRAM delay DGRAM delay datagram NFLOW datagram datagram datagram COMMAND 1 2 t
Compare performance of latency and jitter test under different load in RTAI Compare jitter using MUP and SMO schedulers (logarithmic view) Measurements after Leave, t_between = 225 ms TECHTALK BLOG TELOSALLIANCE.COM/BLOG The results were very promising, and soon what had been research began quickly transforming into software design outlines and pieces of working code. A lab demo of a fully working Livewire link was set up in June of 2001, at the University of Latvia in Riga, and we began two years of intensive work devoted to bringing Livewire to broadcasters. We built prototypes of a networked mixing console, a mixing engine, and audio IO devices of several types, as well as designed and implemented intelligent and user-friendly software. In April, 2003, the result of this highly involved effort of an entire engineering team resulted in the public introduction of Axia Livewire IP-Audio at the Las Vegas NAB show. BROCHURES AXIAAUDIO.COM/BROCHURES NAB 2003, Las Vegas. Livewire technology receives its irst award. GROWTH SOFTWARE UPDATES AXIAAUDIO.COM/DOWNLOADS Somewhat surprisingly, considering the radical nature of our new idea, those who saw the Axia demonstration at NAB 2003 seemed convinced that it would work. What we didn’t realize is that, while they approved in theory, they certainly didn’t want to be the ones whose facilities proved the theory sound! The irst sale of Axia Livewire equipment happened in late 2003, about half-a-year after its introduction. It was a simple pair of Axia audio nodes, used as a digital snake to take a few audio sources between two locations via optical cable. New York’s WOR The irst large station cluster with Axia. That’s SmartSurface, our irst console design. It caught a lot of people’s attention. FIND A DEALER AXIAAUDIO.COM/BUY IP-AUDIO STUDIO NETWORKING | AoIP CONSOLES | AUDIO INTERFACES | IP INTERCOMS | ROUTING AUTOMATION AXIAAUDIO.COM 97
Page 2 and 3:
TELOS ALLIANCE | COMPANY HISTORY 2
Page 4 and 5:
TELOS ALLIANCE | TABLE OF CONTENTS
Page 7 and 8:
TECHTALK BLOG TELOSALLIANCE.COM/BLO
Page 9 and 10:
Page 11:
Page 14 and 15:
TELOS | BROADCAST PHONE SYSTEMS 14
Page 16 and 17:
TELOS | BROADCAST PHONE SYSTEMS 16
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35:
Page 38 and 39:
OMNIA | RADIO PROCESSING 38 OMNIA.1
Page 40 and 41:
OMNIA | RADIO PROCESSING 40 OMNIA.9
Page 42 and 43:
OMNIA | RADIO PROCESSING 42 ONE FM
Page 44 and 45: OMNIA | RADIO PROCESSING | APPLICAT
Page 46 and 47: OMNIA | CODED AUDIO 46 OMNIA A/XE T
Page 48 and 49: OMNIA | CODED AUDIO 48 OMNIA.8x EIG
Page 50 and 51: OMNIA | CODED AUDIO | APPLICATION A
Page 52 and 53: OMNIA | FM-STEREO TRANSMISSION | TE
Page 61 and 62: TECHTALK BLOG TELOSALLIANCE.COM/BLO
Page 65 and 66: + 4-Fader modules accommodate any s
Page 77 and 78: + + + TECHTALK BLOG TELOSALLIANCE.C
Page 81 and 82: Silky-smooth, side-loading 100mm. c
Page 98 and 99: AXIA | NETWORKING | TECHNOLOGY ARTI
Page 105 and 106: LINEAR ACOUSTIC Viewers are listeni
show all

NOW! 12-13 - Telos

Create successful ePaper yourself

Delete template?

Save as template?