File type frame indicates which type of audio this tag defines. * The following types and refinements are defined: * *
* MIME MIME type follows * MPG MPEG Audio * /1 MPEG 1/2 layer I * /2 MPEG 1/2 layer II * /3 MPEG 1/2 layer III * /2.5 MPEG 2.5 * /AAC Advanced audio compression * VQF Transform-domain Weighted Interleave Vector Quantisation * PCM Pulse Code Modulated audio ** * but other types may be used, but not for these types though. This is used in * a similar way to the predefined types in the {@link ID3_Frame_TMED} * frame. If this frame is not present audio type is assumed to be MPG. * * @package php-reader * @subpackage ID3 * @author Sven Vollbehr