MP2 is a short form of MPEG Audio Layer 2, and it is also used as a file extension for files containing audio data of this type. While it has largely been superseded by MP3 for PC and Internet applications, it remains a dominant standard for audio broadcasting as part of the DABdigital radio[?] and DVBdigital television standards.
For details and a short historic introduction to MP2, see MP3.
... Also, there exists a third, extra-long length for most vowels, which is used in various cases, but particularly when recording a shout, or a greeting.)
Vowels ...