The 64-bit audio file format meets the requirements for NGA and multichannel sound in broadcasting and audio archiving. As with the 16-bit BWF it is based on the Microsoft RIFF/WAVE format.
EBU Tech 3306 was a major source for Recommendation ITU-R BS.2088, which has effectively superseded the EBU specification. This final, version 2 is therefore a pointer document to the ITU specification. The EBU will no longer develop Tech 3306. Previous versions are available below.