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Blog Central

Choosing an AoIP format for a Broadcast Production Facility with AES67

Posted by Martin Dyster on Apr 11, 2017 4:20:00 PM

When talking about Audio-over-IP it is important to stress that we are not discussing something new. In fact, Audio over IP has been a part of the radio broadcast landscape for well over a decade. It was pioneered by the team at US-based Telos, led by the late Steve Church. Called “Livewire,” this AoIP protocol debuted at NAB in 2003. Since the introduction of that first low-latency, contribution-quality format, many other protocols have followed.  However, the sheer amount of choice and conflicting marketing messages associated with each new protocol can be extremely confusing to potential adopters. The true benefits of an IP-based audio system are easily compromised by an inability to choose ‘best-of-breed’ equipment simply because ‘device A’ doesn’t support the protocol adopted by ’device B.’

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Topics: Audio over IP, aoip, AoIP for Television

Harnessing the Full Potential of Audio over IP

Posted by Martin Dyster on Feb 8, 2017 11:00:00 AM

Martin DysterThere is a misconception in the broadcast space that media outlets must wait for video over IP to mature before fully embracing an audio over IP (AoIP) infrastructure, but this is not the case. AoIP technologies have been stable for some time and today can provide the flexibility, reliability, and connectivity needed to deploy audio separately from video. Before the introduction of SDI video with embedded audio, video and audio had been handled separately for years. Although embedded audio seemed like a step forward, it did not reduce lip sync issues, and associated metadata is still easily separated from the audio. Since metadata is an increasingly essential part of new audio services, this becomes a major problem.

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Topics: Audio over IP, AoIP for Television

The Case for AoIP Interoperability and the Rise of AES67

Posted by Martin Dyster on Feb 29, 2016 4:58:00 PM

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.

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Topics: AES67, Audio over IP, AoIP for Television

AERO.soft - Bringing Audio Monitoring and Processing into AoIP

Posted by Martin Dyster on Nov 30, 2015 5:01:00 PM

In the past, audio processing and monitoring required the purchasing of multiple, specialized hardware to support each function in the air chain. But now, thanks to the increase in the speed of Ethernet connectivity, and IT-based processing power, many of these same processes can be condensed and supported over IP. Audio in particular is making a move to the IP realm with the recent AES67 standard bringing interoperability between manufacturers. Even with this standardization, Audio over IP (AoIP) is still not being used to its maximum potential in the broadcast space.

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Topics: Audio over IP, AoIP for Television

Audio over IP and the Future of Television

Posted by Ken Tankel on Oct 29, 2015 12:00:00 AM

 

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.

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Topics: AES67, Audio over IP, AoIP for Television