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The Broadcast Wave Format is a file format for of audio data. It can be used for the seamless exchange of audio material between different broadcast environments and equipment based on different computer platforms. As well as the audio data, a BWF file contains the minimum information that is considered necessary for all broadcast applications. From the BWF file, using an object-oriented approach, a higher level descriptor can be used to reference other files containing more complex sets of information which can be used for the different specialised applications.

The Broadcast Wave Format is based on the Microsoft WAVE audio file format which is one type of file specified in the Microsoft “Resource Interchange File Format”, RIFF. Some restrictions are applied to the original format. In addition the file includes an “Broadcast Audio Extension” chunk. A chunk is a basic building block of RIFF files. This illustrated below.