What is ISO-IEC 23009-6:2021?

ISO-IEC 23009-6:2021 is a technical standard that focuses on the representation and delivery of interactive audio scenes and objects (IASO). It is part of the MPEG-DASH (Dynamic Adaptive Streaming over HTTP) family of standards, which are widely used for streaming multimedia content over the internet.

of the Standard

The purpose of ISO-IEC 23009-6:2021 is to provide a standardized framework for the description and rendering of interactive audio scenes and objects. This includes features such as object-based audio, spatial audio, and interactivity. The standard defines a set of tools and technologies that enable the creation, delivery, and playback of immersive audio experiences.

One of the key aspects of ISO-IEC 23009-6:2021 is the concept of audio objects. An audio object can be thought of as a sound source that can be manipulated independently in a given audio scene. This allows content creators to have fine-grained control over audio elements, giving them the ability to dynamically position and manipulate sounds within a three-dimensional space.

Technical Details

ISO-IEC 23009-6:2021 relies on various technologies and file formats for its implementation. It uses MPEG-H 3D Audio for spatial audio representation, which provides compatibility with both channel-based and object-based audio systems. Scene Description Language (SDL) is used to describe the audio scene and its objects, allowing for precise placement and behavior of audio elements.

The standard defines a set of metadata systems that allow content creators to specify detailed information about the audio objects, such as their position, size, and movement. It also supports interactivity by enabling the synchronization of audio objects with other media components, such as visuals or user interactions.

Applications and Benefits

The applications of ISO-IEC 23009-6:2021 are vast and diverse. It can be used in various industries, including gaming, virtual reality, augmented reality, and multimedia streaming services. By providing a standardized format for interactive audio scenes and objects, the standard enables content creators to deliver immersive and personalized audio experiences to their audiences.

With ISO-IEC 23009-6:2021, users can enjoy enhanced audio experiences that go beyond traditional stereo or surround sound. They can interact with audio elements in real-time, ensuring a more engaging and interactive entertainment experience. Furthermore, the standard's compatibility with existing audio systems allows for backward compatibility with older playback devices.

In conclusion, ISO-IEC 23009-6:2021 is a technical standard that revolutionizes how interactive audio content is created, delivered, and experienced. Its implementation opens endless possibilities for immersive and personalized audio experiences across various industries. As technology continues to evolve, this standard ensures that audio remains an integral part of the multimedia landscape.