Several people have asked me questions via private emails regarding subcode. While much information is generally availabe describing the CD subcode format and even how it is transmitted via S/PDIF, I have found very little regarding MD subcode formats. All I know at this point is that, for recordable MD a single 2332-byte sector of each 36 sector cluster is allocated for subcode and 32 2332-byte sectors are for audio. (Therefore it would seem that the recordable MD subcode rate is 1/32 of the ATRAC encoded audio rate for non-LP.) For pre-recorded MD, 4 sectors are subcode and 32 are audio data, so the subcode rate jumps up to 1/8 of the audio rate. But nowhere have I found a description of what is in the MD subcode data, or if this data is somehow transmitted via S/PDIF's user bits. It is a good guess that recordable MD constructs the basic display data, track number and time, on-the-fly, unlike CD, which has this info recorded as part of the "Q" subcode channel. This is borne out by the fact that when one does edit functions, such as divide/combine/A-B erase the MD recorder only changes the UTOC and does not re-record all the subcode sectors associated with the affected audio. I'd be keen to get some further information if anyone could point me in the right direction... ----------------------------------------------------------------- To stop getting this list send a message containing just the word "unsubscribe" to [EMAIL PROTECTED]
