MIDIenablespeopletouse()computersandelectronicmusicalinstruments.ThereareactuallythreecomponentstoMIDI,thecommunications"()",theHardwareinterfaceandadistribution()called"StandardMIDIFiles".InthecontextoftheWWW,themostinterestingcomponentisthe()Format.Inprinciple,MIDIfilescontainsequencesofMIDIProtocolmessages:However,whenMIDIProtocol(请作答此空)arestoredinMIDIfiles,theeventsarealsotime-stampedforplaybackinthepropersequence.MusicdeliveredbyMIDIfilesisthemostcommonuseofMIDItoday.
A.messages
B.packets
C.frame]
D.information
正确答案是A