M

Markup: A marked up file contains tags which provide semantics and structure to documents for use and presentation via reading system applications. The symbols <, >, and / are used to separate the content of the tags from the text itself.

Master Project: Term used in MyStudio PC to define a DTB project that has been stored with the MyStudio PC project file. Created with the Build process. The MyStudio PC Master Project also contains all of the DAISY book files.

Metadata: An element used to describe the content of a document; literally, data about data. The metadata information describes and identifies the book for bibliographical and archival purposes. The end user is not necessarily aware of its presence.

MIDI: Acronym for Musical Instrument Digital Interface. MIDI enables synthesizers, sequencers, computers, rhythm machines, etc. to be interconnected through a standard interface. MIDI is an asynchronous, serial interface.

mp3: Is the file extension for MPEG, audio layer 3. Layer 3 is one of three mpeg coding schemes (layer 1, layer 2 and layer 3) for the compression of audio signals. Layer 3 uses perceptual audio coding and psychoacoustic compression to remove all superfluous information (more specifically, the redundant and irrelevant parts of a sound signal that the human ear does not hear). It also adds a MDCT (Modified Discrete Cosine Transform) that implements a filter bank, increasing the frequency resolution 18 times higher than that of layer 2.

Multimedia: Multimedia is a term which describes a presentation that combines more than one media. In the DTB the combination of text and audio is the primary multimedia combination.