A Registered Parameter Number is used to establish the range of Channels used for sending or receiving notes. This allows Control Change and Pitch Bend messages to be addressed to that particular note. Wherever possible, every sounding note is temporarily assigned its own MIDI Channel between its Note On and Note Off. This will enable richer communication between increasingly expressive MIDI hardware and software. These proposed conventions define a way of distributing polyphonic music over a group of MIDI Channels, making multiple parameters of different notes separately controllable. The MPE specification aims to provide an agreed method for hardware and software manufacturers to communicate multidimensional control data between MIDI controllers, synthesizers, digital audio workstations, and other products, using the existing framework of MIDI 1.0. (Note: not all devices may support all features) (Reprinted from the MIDI Manufacturers Association MPE Specification document's Background Section) To obtain a free copy, join the MIDI Association, the global community of people who work, play and create with MIDI, at The Basic Features of MPE The MPE specification will be available for download in the coming weeks. "The MPE specification paves the way for a new generation of expressive controllers and music software, providing many creative opportunities for live musicians and producers. MMA President Tom White notes that "The efforts of the members (companies) of MMA has resulted in a specification for Polyphonic Expression that provides for interoperability among products from different manufacturers, and benefits the entire music industry." Music making products (such as the ROLI Seaboard, Moog's Animoog, and Apple's Logic) take advantage of this so that musicians can apply multiple dimensions of finger movement control: left and right, forward and back, downward pressure, and more. In MPE, each note is assigned its own MIDI Channel, so that Channel-wide expression messages can be applied to each note individually. With MPE, every note a musician plays can be articulated individually for much greater expressiveness. Prior to MPE, expressive gestures on synthesizers-such as pitch bending or adding vibrato-affected all notes being played. MPE enables electronic instruments such as synthesizers to provide a level of expressiveness typically possible only with acoustic instruments. Los Angeles, CA, January 28, 2018− Today marks the MIDI Manufacturers Association's (MMA) ratification of a new extension to MIDI, MPE (MIDI Polyphonic Expression).
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