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Connecting MIDI devices |849
55 Connecting MIDI devices
Introduction to MIDI
Ports, channels, messages
What is MIDI?
MIDI stands for Musical Instruments Digital Interface. This interface lets
you connect two musical instruments, or a computer and various musical
instruments.
From a software point of view, MIDI is a protocol that describes messages for
playing notes and controlling them. It is sort of a grammar to let different
instruments and computers speak the same language, and let the one tell
the other what to do.
From a physical point of view, MIDI messages travel across the classic MIDI
interface or the USB port, a connector replacing the MIDI ports with a single
port and cable. Personal computers, tablets and external controllers can be
connected with a single USB cable.
Pa700 can be connected to a Windows or Mac computer with no need of
special software. However, for full and easy use of all its MIDI features, we
suggest that you install the
KORG USB MIDI Driver, a special software that
you can download from our web site (www.korg.com).
No audio signal is transmitted through MIDI. MIDI only consists of control
messages.
Channels and messages
Basically, a MIDI or USB cable transmits 16 channels of data. Think to each
MIDI channel as a TV channel: the receiver must be set on the same channel
of the transmitter. The same happens with MIDI messages: when you send
a Note On message on channel 1, it will be received on channel 1 only. This
allows for multitimbrality: you can have more than one sound playing on the
same MIDI instrument – one for each MIDI channel.
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