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Serial ADM with Dolby AC-4

Dolby is collaborating with the EBU and other partners to enable solutions based on the Audio Definition Model (ADM), an ITU standard for professional audio metadata, and to enable interoperability with Dolby AC-4 workflows.

S-ADM is a frame-based representation of ADM metadata. It is designed for use in linear workflows such as live production, or playout for broadcasting and streaming applications. As productions move from delivery of pre-rendered mixes to stem or component-based outputs to allow for more advanced use cases, metadata is becoming an integral ingredient of production, adding essential information to what is delivered. In this series of short demos, we’ll cover use cases from multi-language to immersive and personalized audio production. Click on the links below to see S-ADM in action.

Video 1: Authoring open standard metadata for Next Generation Audio

Join us for a brief introduction to PMD Studio, a prototype open-source application to author metadata in real-time. For next generation audio, the use of an open standard like S-ADM is the next step towards more scalable, flexible, and interoperable workflows.

Video 2: Using Serial ADM with Dolby AC-4: changing channel configurations

Learn how S-ADM can be used in a linear emission playout chain to automatically configure a Dolby AC-4 audio encoder. This informative video shows how S-ADM can automatically control the channel configuration of the Dolby AC-4 encoder inside an Ateme Titan Live. The behaviour of the resulting emission stream is verified using off-the-shelf consumer equipment.

Video 3: Using Serial ADM with Dolby AC-4: playout ad insertion

In this workflow example, learn how S-ADM can drive insertion of ads and other pre-recorded programming in the playout chain. Watch how the Dolby AC-4 encoder handles switching between two different input sources each containing S-ADM. This demonstrates the switch between a live event (configured with PMD Studio) and a pre-recorded playback source, such as an ad playout server.

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