M-Audio Keystation Pro 88, Руководство для продвинутых пользователей

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About The MIDI Out Port
The Keystation Pro 88 can also interface with other MIDI devices. By default (i.e. when
you switch the unit on), all controller data is sent out via both the MIDI output and the
USB output.
For the MIDI output to function as a USB-to-MIDI interface, press the MIDI Out from
USB buttons (P DATA LSB) to activate the MIDI Out from USB mode.
If you are using a MIDI host application that can pick up multiple input drivers, you will be
able to use the Keystation Pro 88’s MIDI input and the Keystation Pro 88 control surface
to record MIDI data and send it out via the Keystation Pro 88 MIDI output.
Note: The Keystation Pro 88 is not a MIDI Thru device. MIDI data received at the Keystation Pro 88
MIDI input can never be sent directly to the Keystation Pro 88 MIDI Out port. However, if the
Keystation Pro 88 is connected to a computer via USB, data received via the MIDI In port can be
transmitted to the MIDI Out port because the data is sent to and received back from the computer.
MIDI Out From USB mode must be engaged for this to occur.
Program and Bank Changes Explained
Bank Changes were devised to expand on the GM sound set. Each bank contains 128
patches, accessible via a Program Change. There are a total of 16,384 banks available
via the 14-bit Bank Change message. The first 7 bits of this message are sent in a single
byte known as the Bank LSB. The last 7 bits are specified by another byte known as the
Bank MSB. The Bank LSB is the most commonly used message and allows for 128
bank changes.
Most MIDI devices respond to Program Changes. MIDI devices that do not conform to
the GM sound set may use the Program Change message for other purposes. Many
VST instruments allow a Program Change to change the instrument patch.
Bank Changes are less commonly used. Bank Changes are useful in extensions to the
MIDI specification, such as Roland's GS specification and Yamaha's XG specification.
Both of these require you to specify a Bank Change in order to access the extra sounds
the specifications provide.
The Keystation 88 Pro simplifies the process of sending Program, Bank LSB and Bank
MSB data. Press the PROGRAM, DATA LSB or DATA MSB button and enter the
Program or Bank Change you wish to send.
RPN/NRPNs Explained
Non-registered parameter numbers (NRPNs) are device-specific messages that enable
the control of synths via MIDI. The MIDI specification defines parameter numbers to
allow manufacturers to specify their own controllers. The more common of these have
been registered by the MIDI Manufacturer's Association and are part of the MIDI
specification (hence the term Registered Parameter Numbers – RPNs). Please
reference Appendix F for additional information.