MIDI

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MIDI
Musical Instrument Digital Interface
One MIDI instrument can play 16 channels of sound
simultaneously
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MIDI
Musical Instrument Digital Interface
One MIDI instrument can play 16 channels of sound
simultaneously
Whats a MIDI Instrument, Bruce?
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MIDI
Musical Instrument Digital Interface
and can change the band at any time, with still
only only 16 sounds
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MIDI
Musical Instrument Digital Interface
and can change the band at any time, with still
only only 16 sounds
7
MIDI
Musical Instrument Digital Interface
and can change the band at any time, with still
only only 16 sounds
8
MIDI
Musical Instrument Digital Interface
and can change the band at any time, with still
only only 16 sounds
9
MIDI
Musical Instrument Digital Interface
and can change the band at any time, with still
only only 16 sounds
10
MIDI
Musical Instrument Digital Interface
and can change the band at any time, with still
only only 16 sounds
11
MIDI
Musical Instrument Digital Interface
and can change the band at any time, with still
only only 16 sounds
12
MIDI
Musical Instrument Digital Interface
and can change the band at any time, with still
only only 16 sounds
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MIDI
Musical Instrument Digital Interface
and can change the band at any time, with still
only only 16 sounds
But it has to be fast!
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MIDI
The MIDI File
. . contains information to play the 16 channels
in the instrument
Eg. Note On . . Channel Number . . Note Number .
.Velocity 9 1 60 127 plays channel 1 middle
C loudly and Note Off . . Channel Number . . Note
Number . .Velocity 8 1 60 85 releases the same
note gently
But it has to be the SAME note!
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MIDI
The MIDI File
. . and tells the instrument which sounds to use
in the channels
The General MIDI Specification lists 128 standard
sounds Eg. 1piano, 42Viola, 66Alto Sax,
105Sitar
What do they sound like, Bruce?
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MIDI
The MIDI File
. . by sending Program Change data to the
instrument
Eg. Program Change . . Channel Number . . New
Sound 32 4 48 changes channel 4 to Timpani
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MIDI
Problems, Problems, Problems
1. Music by Numbers
eg. Funeral March, Mozart Flute Concerto K622
2. Program changes can cut sounds short
eg. sustained sounds after Note Off
3. Different Sounds
General MIDI vs Manufacturers settings / the
sound of the sound
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MIDI
The Audition
1. The Sound Modules
The SoundBlaster 32 PC sound card The Roland
JVC-30 Multi-timbral Synthesiser The Casio
CTK-601 Multi-timbral Synthesiser
2. The Music
Hotel California Take the A Train Mozarts 40th
Symphony