![Audio Definition Model Ver. 2.0](https://www.ebu-cdn.ch/sites/tech/files/shared/tech/tech3364v2_0.pdf/thumbnail-512.webp)
The Audio Description metadata Model provides a formalised description of audio content for many types of audio file (e.g. BWF, BW64).
EBU Tech 3364 was a major source for Recommendation ITU-R BS.2076, which has effectively superseded the EBU publication. This final, version 2 is therefore a pointer document to the ITU specification. The EBU will no longer develop Tech 3364. Previous versions are available below.