NRPN/RPNs

KeyRIg 49 User Guide

can in turn contain 128 possible sounds selected via a separate program change MIDI message. This enables a user to theoretically recall over two million programs directly, using only MIDI commands. However, most devices only use a few different banks, and allow you to access them with either a Bank LSB message or a Bank MSB message. Please consult your synthesizer’s or software’s documentation for more information on which type of bank change messages they can process.”

You will find many MIDI devices respond to program change commands and many are organized according to the GM listing. In General MIDI devices, different sounds are organized in the same way from device to device. Piano sounds are in their particular place, string sounds are in their place, drum sounds are in their place, and so on. All GM devices (both hardware and software sound modules) are clearly labeled as such, so you know that their sounds are organized in the General MIDI structure. When a GM device receives a MIDI program change, it calls up a type of sound that you expect from the GM sound set. All non-GM MIDI sound modules call up unique sounds from their memory upon receiving MIDI program changes. Since the sounds in a non-GM device are not arranged in a particular order, you need to take a look at the device itself to see which sound you want and at which location in the memory it resides. Many VST instruments such as Native Instruments’ FM7 or the synth modules in Propellerhead Reason are non-GM devices.

You can send program change, bank LSB and bank MSB messages directly from the KeyRig keyboard. Please consult the “Advanced KeyRig 49 Features in Edit Mode“ section of this User Guide for further details.

Non-registered parameter numbers (NRPN’s) are device-specific messages that enable you to control synths and sound modules via MIDI. The MIDI specification defines open parameter numbers to allow manufacturers to specify their own controllers. The more common of these are registered by the MIDI Manufacturer’s Association and are now part of the MIDI specification (hence the term Registered Parameter Numbers – RPN’s). (See Appendix B) Each NRPN/RPN has an associated 2-byte number. The two bytes allow for 128 values each. (An RPN or NRPN message is made up of two parts: the MSB and the LSB message. Both of these messages together constitute an RPN or NRPN command.) This allows for 16,384 values in total.

MIDI controllers 98 and 99 represent the NRPN LSB and MSB respectively, while 100 and 101 represent the RPN LSB and MSB messages (see the MIDI controllers list in Appendix B). To transmit an NRPN/RPN message, these LSB and MSB controller messages are sent along with their user-specified values. A further controller message and value needs to be sent to specify the (coarse or fine) value adjustment. This is specified by controller number 6 (data entry) for coarse adjustments or number 38 for fine adjustments.

A list of NRPN’s is usually given in the user’s manual of any device that receives NRPN messages. It is always necessary that the NRPN MSB and LSB be sent together. Both will be specified in the device’s manual.

49 specifications

The M-Audio 49 is a versatile and compact MIDI keyboard controller designed for musicians, producers, and performers. Featuring a 49-key layout, this controller provides an excellent balance between portability and functionality. Its velocity-sensitive keys allow for expressive play, making it suitable for various musical genres, whether you're composing electronic tracks or playing classical piano melodies.

One of the standout features of the M-Audio 49 is its user-friendly interface. With a variety of assignable controls, including knobs, faders, and buttons, users can easily map these elements to their preferred software parameters, enhancing the overall workflow. This customization capability is a key advantage for those looking to streamline their music production process.

The M-Audio 49 supports both USB and MIDI connectivity, making it compatible with a wide range of devices and software. The USB connection allows for easy plug-and-play functionality, while the traditional MIDI output offers the ability to connect to external synthesizers and sound modules. This dual connectivity ensures that artists can integrate the controller into any studio setup with ease.

Additionally, the M-Audio 49 incorporates advanced technologies, such as MIDI controller functionality that extends well beyond traditional keyboard playing. It includes features like pitch bend and modulation wheels, providing further control over the sound and performance dynamics. The incorporation of velocity sensitivity enhances the touch response, allowing musicians to add subtle nuances to their playing.

The keyboard is also designed with portability in mind, making it an ideal choice for musicians on the go. Its lightweight construction and compact design allow for easy transport without sacrificing key range or playability. This makes it a perfect fit for live performances or studio sessions where space is limited.

Moreover, the M-Audio 49 often comes bundled with an impressive array of software, which may include digital audio workstations and virtual instruments. This software package enhances the value of the controller, providing users with everything needed to start creating music right out of the box.

In summary, the M-Audio 49 is a powerful and flexible MIDI controller that combines portability, functionality, and an intuitive interface. Its key features, such as assignable controls, dual connectivity, advanced technologies, and bundled software, make it an attractive option for musicians looking to enhance their creative possibilities. Whether you're in the studio or performing live, the M-Audio 49 stands out as a reliable tool for music production.