Computer Science · Oct / Nov 2020 · Paper 11 · Question 7
0478
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Nina is recording some music tracks that she has written. She is researching whether she should record them in MIDI or MP3 format. Explain what is meant by MIDI and MP3 format. MIDI MP3 [4]
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Four from (Max two per format):
MIDI
Musical Instrument Digital Interface (file)
Stores a set of commands/instructions (for how the sound should be played)
Does not store the actual sounds
Data in the file has been recorded using digital instruments // produced by synthesizer
Specifies pitch of the note // specifies the note to be played
Specifies when each note plays and stops playing // Specifies key on/off
Specifies duration of the note
Specifies volume of the note
Specifies the tempo
Specifies the type of instrument
Individual notes can be edited
MP3
MP3 is a format for digital audio
MP3 is an actual recording of the sound
MP3 is a (lossy) compression format
Recorded using a microphone
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