In the same MIDI cable, up to 16 MIDI channels may be used to control up to 16 different instruments playing independently. In practice, musicians and software refer to the MIDI channels by counting them from 1 to 16, so that there is a difference of 1 when you program them in hexadecimal (channel "1" is coded "0", channel "10" is coded "9" and channel 16 is coded "F"). There are 16 possible MIDI channels, numbered from 0 to 15 in hexadecimal. The number of DATA bytes that follow depend on the type of the message.Įxcept for some system MIDI messages, the STATUS byte contains the MIDI channel number. The STATUS byte determines the type of the message. A STATUS byte has bit 7 set to 1 and a DATA byte has bit 7 set to 0. The first byte is a STATUS byte, often followed by DATA bytes with additional parameters. The MIDI messages are sent as a time sequence of one or more bytes (8 bits). The important point is that the MIDI language does not define the sound itself, but only the sequence of instructions to create the sound in the target synthesizer.
Various messages are defined to transmit the information needed to perform the playback of music. " Real time" means that each message is sent exactly at the moment it must be interpreted by the target synthesizer (which can be a hardware synthesizer or software synthesizer). The MIDI language is used to transmit real time information for the playback of a piece of music. This MIDI tutorial will help you to understand how you can use the MIDI language to control any device that uses the MIDI protocol.
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