Creating 4CH/Quadrophonic audio... 2004-01-03 01:32:30 Has anyone here played with the creation of four-channel audio, to be burned to CD using the FLAGS 4CH parameter? I've recently acquired some nice soundboard and audience tapes for a specific show, and in the process of creating a matrix decided it would be fun to also do a quadrophonic mix. But when I created a simple 4-channel clip/sample from another source (to test EACs ability to handle the 4CH flag, I was told that the audio type was not allowable. If anyone wants to replicate what I did to create a four-channel sample just take a standard snippet from any CD-quality wav, and run it through SoX with the following parameters (the output will be your stereo source, but re-mapped to four channels):Code: [Select]sox "infile.wav" -c 4 -s "outfile-quad.wav" Winamp plays the output with no difficulties, and recognizes it as PCM, 44100 Hz, 4 channel(s), 16 bits per sample. Does anyone have an explanation, or has anyone here successfully used the 4CH flag when mastering an audio disc? Is EAC even capable of properly using this flag? Is there something I missed in SoX, when creating my sample? Any and all assistance would be appreciated; this is something which should work (it is an official part of the CD-Audio spec, and has been since its inception), but is rarely - if ever - used, and finding information on it has proven more elusive than one might expect. - M.