MP3 file format Details

I am trying to create media files required for android mediaframeworktest. In the file list they have given

PD_256kbps_44.1khz_mono_CBR_DPA.mp3

NIN_256kbps_44.1khz_mono_CBR_MCA.mp3 etc

Anybody know what is NIN...MCA and PD...DPA? ar开发者_Go百科e they just names or any special format of mp3?

Please explain.

Thanks JSE

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CBR - Constant Bit Rate
VBR - Variable Bit Rate

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I am not sure of these info, but please check.
I think they are just names. It has nothing got do with mp3 as a format

PD - Perception Digital
NIN - Nine Inch Nails

MCA and DPA are just some Company names

Just go through this file, you can see more.. :-)