Most FireWire MIDI devices also connect directly to a PC with a host device driver, and the host handles communication between FireWire MIDI devices even if they use different drivers. For more details, see the article on USB in the Connection area of Resources. Most devices follow a specification ("class") that was defined by the USB-IF Windows and Mac PCs already come with "class compliant" drivers for devices that follow the USB-IF MIDI specification. USB-MIDI devices require a "driver" on the PC that knows how the device sends/receives MIDI messages over USB. (This could change sometime in the future with new versions of USB). With USB technology, devices must connect to a host (PC), so it is not possible to connect two USB MIDI devices to each other as it is with two MIDI DIN devices.
In most cases, all you need to do is plug in your USB or FireWire MIDI interface and boot up some MIDI software and off you go. The best part is that USB and FireWire are "plug-and-play" interfaces which means they generally configure themselves. Adapters can be as simple as a short cable with USB or FireWire connectors on one end and MIDI DIN connectors on the other, or as complex as a 19 inch rack mountable processor with dozens of MIDI and Audio In and Out ports. Also, if you want to connect one MIDI device to another (without a computer), MIDI cables are usually needed.Ĭomputers are most often equipped with USB and possibly FireWire connectors, and these are now the most common means of connecting MIDI devices to computers (using appropriate adapters). But MIDI-DIN is almost always still used on a lot of MIDI-equipped devices because it adequately handles communication speed for one device.
Using a 5-pin "DIN" connector, the MIDI DIN transport was developed back in 1983, so it is slow compared to common high-speed digital transports available today, like USB, FireWire, and Ethernet. The speed of the transport determines how much MIDI data can be carried, and how quickly it will be received.
Many different "transports" can be used for MIDI messages.
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