This project was proposed by Mark Yonge, chair of working group SC-02-08. It was approved under our rules by Subcommittee SC-02 and assigned to the SC-02-08 Working Group on Audio-File Transfer and Exchange.
|TITLE||AES-X162, Amendment to AES31-2, File-size extension using the "RF64" technique|
|SCOPE||This amendment to AES31-2 provides a method of extending audio files beyond the limits set by the RIFF Wave format. It uses the "RF64" technique to permit 64-bit file addressing to accommodate longer recording times and multiple channels in a single file.|
|OUTPUT INTENT||Amendment to standard|
|RATIONALE||The current AES31-2 is based on RIFF Wave files which have a maximum file-size limit of 2 GB (or 1 GB, depending on computer operating-system implementation). The RF64 technique will permit arbitrarily large file sizes while maintaining backward compatibility for files smaller that, say, 1 GB. This technique has been adopted by the EBU and is in active use.|
|WHO BENEFITS?||All users of recorded digital audio in file format.|
|WHY AES?||AES members have the necessary expertise, and already publishes the parent AES31-2 standard.|