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MIDIMIDI

University Institute of Engineering and Technology

Panjab University, Chandigarh

Presented By

Kavita Kumari

Roll No. MEIT13-06

2ndSem. M.E.(Information Tecnolo!"#

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MIDI

Outlines

What is MIDI?

MIDI Transmission

MIDI Hardware

MIDI Software

MIDI Messages

MIDI Application

MIDI Properties

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What is MIDI?

MIDI stands for Musical Instrument Digital Interface.MIDI is a protocol developed in the !"#$s which allows electronicinstruments and other digital musical tools to communicate with eachother.

Some Clarification:MIDI doesn%t directl& descri'e musical sound.MIDI is not a language.It is a data communications protocol.

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MIDI Transmission

(inar& )li*e all digital+

Serial , one 'it at a time.

As&nchronous , devices can send messages whenever

the device decides. -ne wa& , MIDI ca'les onl& carr& messages in one

direction.

logical channels.

Transmission speed )original standard+ , /012# 'itsper second )/.12 *'its+.

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HIDI Hardware

3omputer interfaces )with 4S( and 5ire,wire0 can 'e 'uilt into *e&'oards and otherdevices+.

Ports

3a'les

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MIDI Port

Port sends and receives MIDI messages.

(asic hardware ports include I60 -4T0 TH74.

2,pin DI6 connectors

-nl& / pins among 2 are used until now

Serial transfer0 data are sent 'it '& 'it 4A7T chip main micro,controller )4niversal As&nchronous

7eceiver8Transmitter+

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3a'les

2,pin ca'le was a t&pe of audio ca'le usedin 9urope.

1 of the pins are never used.

Designed to run to at least 2 meters.

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MIDI Software

The MIDI Software application falls into fourma:or categories;

Music recording and Performanceapplication

Musical notations and printing application

S&nthesi

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MIDI Messages

MIDI messages are '&tes that are interpreted '& the MIDIdevices

The messages are used to conve& a series of instructions toone or all of the MIDI devices within the s&stem

MIDI Messages

3hannel Messages S&stem Messages

=oice

Message

Mode

Message

3ommon

Message

7eal,Time

Message

9>clusive

Message

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3hannel Message

Messages that are transmitted on individual channels rather that glo'all& toall devices in the MIDI networ*.

Channel voice messages:

Instruct the receiving instrument to assign particular sounds to its voice

Turn notes on and off Alter the sound of the currentl& active note or notes

Channel mode messages:

3hannel mode messages are a special case of the 3ontrol 3hange

message The difference 'etween a 3ontrol message and a 3hannel Mode message0

which share the same status '&te value0 is in the first data '&te.

3hannel mode messages determine how an instrument will process MIDIvoice messages.

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S&stem Messages

S&stem messages carr& information that is not channel specific0 suchas timing signal for s&nchroni

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Applications of MIDI

. Studio Production

recording0 pla&'ac*0 cut,and,splice editing

creative control8effect can 'e added

1. Ma*ing score

with score editing software0 MIDI is e>cellent in ma*ingscore

some MIDI software provide function of autoaccompaniment8intelligent chord arrangement

/. earning Bou can write a MIDI orchestra0 who are alwa&s eager to

practice with &ouC

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Applications of MIDI

.3ommercial products

mo'ile phone ring tones0 music 'o> music.

2. Musical Anal&sis

MIDI has detailed parameters for ever& input note It is useful for doing research

5or e>ample0 a pianist can input his performance with a MIDI*e&'oard0 then we can anal&

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The Eood

Allows for one,to,man& control.

3ontrol is independent of s&nthesis.

Digital representation of data allows for computer

generation0 control0 and editing. MIDI data is Fporta'le.G

Data can control an&thing that understands MIDI.

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The (ad

owest common denominator approach.

e&'oard 'ias8event oriented.

Slow communication speeds.

Poor data resolution.

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The 4gl&

6ot all devices support the same featuresets )MIDI implementation charts+.

Serial communication means that it is

impossi'le to accuratel& representsimultaneous events.

6o re?uirements for how fast a device

responds to a message.

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