New File Format and Methods for Multichannel Sound in Broadcasting

The RF64 file format is designed to meet the requirements for multichannel sound in broadcasting and audio archiving. It is based on the Microsoft RIFF/WAVE format and Wave Format Extensible for multichannel parameters. Additions are made to the basic specification to allow for more than 4 Gigabyte file sizes when needed. A maximum of 18 surround channels, a stereo downmix channel and also bitstream signals with non-PCM coded data can be stored in the file. All existing supplements and chunks of the BWF and WAVE formats can be passed along with the new format. Early applications have been developed.

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