Now these devices may be used in Airplane Mode.. In an effort to allow users to use functions on their phones that don't require wireless access while in flight, phone manufacturers have developed Airplane Mode to shut down all the phone's wireless capabilities.
Protocol Overview MIDI (Musical Instrument Digital Interface) is an industry-standard protocol that enables electronic musical instruments, computers, and other equipment to communicate, control, and synchronize with each other. MIDI allows computers, synthesizers, MIDI controllers, sound cards, samplers and drum machines to control one another, and to exchange system data.1 MIDI messages are sent serially, and are organized into 10-bit words.
MIDI is nothing more than data -- a set of instructions. MIDI data contains a list of events or messages that tell an electronic device (musical instrument, computer sound card, cell phone, et cetera) how to generate a certain sound.Here are a few examples of typical MIDI messages:1  Note On signals that a key has been pressed or a note on another instrument (like a MIDI guitar or clarinet) has been played. 2  The Note On message includes instructions for what key was pressed and at what velocity (how hard the note was played).nd since MIDI files don't contain sampled audio like MP3 or WAV files, they're comparatively much smaller than audio files. A minute of compressed audio adds up to around 10Mb (megabytes) of data, while a minute of sound translated into MIDI only takes up 10Kb (kilobytes) [source: MIDI Manufacturers Association ].