I always thought that the best way to put ambisonic media in flac was to use an ogg container, with the 0-order w channel in one flac stream, the three first-order channels in a second flac stream, the five second-order channels in a third flac stream and the seven third-order channels in a forth flac stream.
An alternative would be to group the 0-order and first order into the first stream and continue as above for the second and third order channels. Keeping the same-level channels together should help the compression, but different-order channels are likely to have less inter-dependence. Limiting each flac stream to just same-order channels requires four flac streams for a sixteen-channel third-order ambisonic, rather than just two streams, but makes it easier to drop the higher-order channels when desired. Allocation of forth and higher order ambison channels into the flac streams is left open, but higher orders are increasingly difficult to record and therfore are increasingly rare. Forth and higher level may be a purely theoretical concern. -JimC -- James Cloos <[email protected]> OpenPGP: 1024D/ED7DAEA6 _______________________________________________ Flac-dev mailing list [email protected] http://lists.xiph.org/mailman/listinfo/flac-dev
