Broadcasting audio embraces several techniques to qualify, playout and transmit audio signals to the end-users, by using multiple distribution networks. After decades of analog broadcasting, audio signals were digitized before the rise of the Internet allowed the individual streaming of content. Nowadays, broadcasters usually offer linear channels as well as streaming platforms for direct access to content on demand.
The AES Technical Committee for Broadcast and Online Delivery covers the sound engineering topics that follow:
- Digital terrestrial broadcasting of linear content such as TV and radio channels;
- Digital broadcasting of linear content over the Internet;
- On demand distribution “Internet streaming” of audio (podcasts) and audio for video content;
- Qualification and measurements of audio signals prior to and during broadcasting;
- Object-based audio applications in respect of broadcasting constraints such as limited bandwidth, various receiver capacities, rendering of immersive sound and interactivity features;
- Audio/video synchronization, also known as lipsync.
