Tech blog | Dolby AC4 UK

S-ADM workflow demo SRF IP-Lab

With the goal to optimize bandwidth-use and enable personalized audio experiences in the future, Swiss broadcaster Schweizer Radio und Fernsehen (SRF) has been experimenting to use S-ADM in their SMPTE ST2110 based IP environment. A selection of open-sourced prototype tools by Dolby were used to generate and analyze dynamic metadata in real-time. The balance of beds and objects of a typical sports production with mult-language commentaries were modified on a mixing desk, with changes traveling as metadata through the broadcaster‘s infrastructure.

Technology made simple

Dolby AC-4 provides feature benefits to broadcasters that can be implemented now. Such as dialogue enhancement - audio description and voice clarity – multiple language versions, immersive audio, commentary choice, and automatic loudness levelling.

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.

White paper: Dolby AC-4 Audio delivery

Dolby® AC-4 is an audio delivery system designed to exceed expectations. Integrating easily into content workflows and consumer devices, the system supports existing needs and ongoing innovation of broadcast and streaming services.