The global television broadcast community is poised at the brink of the next great revolution in technological advancement – audio and video over IP. The great leaps that we’ve witnessed over the last 50 years, from black and white to color, mono to stereo, analogue to digital, 4:3 to 16:9, SD to HD and from stereo to 5.1, have benefitted the viewer at home each step of the way, and has been embraced with the purchase of the latest TV or Home Cinema system. However, in the backrooms of TV stations, broadcast engineers around the world have toiled over system designs, white papers and equipment catalogues while manufacturers have raced to bring out the next best widget designed to do the job.Read More
Typically, when you think of a trade show in Amsterdam, you probably think IBC. Certainly the late-summer show is an important convention, but one geared specifically to broadcasters. Integrated Systems Europe (ISE), on the other hand, is aimed at the larger international Audio Video industry, with an emphasis on A/V technologies for live performance settings and business applications – anything from boardroom videoconference systems to the latest speakers for live venues.Read More
The Audio Engineering Society held its second annual Plugfest this past November at NPR studios in Washington, with nearly a dozen manufacturers in attendance, each working toward the goal of audio interoperability. Telos Alliance Chief Science Officer Greg Shay was on hand, and says despite the attendees being competitors, there was a spirit of cooperation that made the event a success.Read More
Video and audio were handled separately for years before SDI video with embedded audio came into use. Embedded audio appeared to be a step forward. The reality is that embedded audio has not reduced lip sync issues and metadata is still easily separated from the audio that it describes. This is particularly unfortunate because metadata will become more essential with new audio services. Audio embedding and de-embedding was never perfect and it remains limited. SDI is, at heart, a video format and it cannot support the future of audio. Channel based audio is heading for replacement by carriage of the objects that make up the channels. Multiple languages, emergency audio, and services for the blind are all competing for space in broadcast services. These expanded audio services provide flexibility and enhanced consumer experiences for broadcast and OTT services and even handheld devices. AES67, Livewire+ and related standards offer a path to making all of this work – including lip sync! AES and SMPTE are working together, and the results will enable the sub-sample accurate linking of Audio over IP (which has existed in radio for over a decade and is growing in TV) and video, all without requiring it to be glued together until final delivery.Read More
AES67 is a new industry standard for interoperability of high quality audio over IP networks from the Audio Engineering Society, published just under two years ago (September 2013). This standard was quickly embraced by all of the main broadcast audio equipment vendors, and compatibility modes announced by all of the major competing networking audio vendors: Livewire, Q-LAN, Ravenna and Dante. Outside of broadcast, there has also been a high level of audio industry acceptance.Read More
If you’ve been paying attention the past few years (and even if you haven’t!), you’ve no doubt heard about AES67, the IP-Audio networking standard adopted by the Audio Engineering Society in 2013. The standard has been a topic of conversation nearly everywhere since it was ratified.Read More
When the Audio Engineering Society published the AES67 standard for Audio over IP in September 2013, it symbolized the culmination of years of development work by people across the broadcast industry. But for Telos, it symbolized not just an industry standard, but the realization of the vision of our founder, Steve Church. As such, we were proud to have been involved since the project’s inception, and have seen it through to fruition.
By now, you’ve likely heard that the Audio Engineering Society (AES) has ratified the AES67 standard, which defines how Audio over IP (AoIP) systems from different manufacturers should interoperate.
The question, now that there’s a published specification, is — where do we go from here?
You might be interested in knowing that the team here at Axia has been involved in helping create this vital interoperation spec since the very beginning. We helped create and sustain the effort to create an interoperability spec, as well as contributing our technology and experience, to make creating the standard easier. Being the first company to develop AoIP technology for broadcast studios allowed us to help in ways that companies that were newer to this tech weren’t able to.Read More
Our Chief Science Officer, Greg Shay, was able to take few moments recently and join Telos' Kirk Harnack on his weekly "This Week in Radio Tech" podcast. The topic: AES67, a framework to standardize low-latency IP-Audio and provide for interoperability that was recently published by the Audio Engineering Society.Read More
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