Behringer UB-Xa User Manual - Page 30

30 UB-Xa User Manual MSB LSB 16 4 16 5 17 0 17 1 17 2 17 3 17 4 17 5 17 6 17 7 17 8 17 9 17 10 17 11 17 12 17 13 17 14 17 15 18 0 18 1 18 2 18 3 18 4 18 5 19 0 19 1 14-bit 2052 2053 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2304 2305 2306 2307 2308 2309 2432 2433 Parameter Name AmplifierEnvLinearity AmplifierEnvChaos PanningVoice1 PanningVoice2 PanningVoice3 PanningVoice4 PanningVoice5 PanningVoice6 PanningVoice7 PanningVoice8 PanningVoice9 PanningVoice10 PanningVoice11 PanningVoice12 PanningVoice13 PanningVoice14 PanningVoice15 PanningVoice16 AtrophyProfileNameA AtrophyProfileNameB AtrophyProfileNameC AtrophyProfileNameD AtrophyProfileNameE AtrophyProfileNameF SequencerStepCount SequencerTime 19 2 19 3 2434 SequencerGatetime 2435 SequencerSync Range 0~63 0~31 0~255 0~255 0~255 0~255 0~255 0~255 0~255 0~255 0~255 0~255 0~255 0~255 0~255 0~255 0~255 0~255 32~255 32~255 32~255 32~255 32~255 32~255 0~128 0~6 Scope global global global global global global global global global global global global global global global global global global global global global global global global patch patch 0~99 patch 0~1 patch Notes Enumeration: 1/4 notes (0), 1/8 notes (1), 1/16 notes (2), 1/32 notes (3), 1/4 triplets (4), 1/8 triplets (5), 1/16 triplets (6), Enumeration: Global (0), Retrigger (1), MPE MIDI Polyphonic Expression (also known as Multidimensional Polyphonic Expression) is a MIDI extension adopted by the MIDI Manufacturers Association in 2018. It allows much greater control of selected parameters than that available in the original MIDI spec by allocating a new MIDI channel to each note played (up to a limit of 15 notes) and therefore allowing each note to have parameters adjusted without affecting the other notes being played. A base channel is reserved for common MIDI messages. The UB-Xa has two ways of using MPE. The Single option uses channel 1 as the base channel, then uses the other fifteen for MPE. However if a Split or Double Program is in use it is possible to switch to the Zones mode, where two base channels, channel 1 for the lower keyboard and channel 16 for the upper, with channels 2 - 8 used for lower keyboard MPE and channels 9 - 15 for the upper keyboard. The selection is option 14 in the MIDI/USB Menu (Shift & 65), where MPE can also be disabled, which is the default option, as activating MPE deselects the MIDI Rx channels selected in options 1 and 2 of the same menu. Typically MPE controllers output three parameters: Pitchbend, Timbre (Filter Cutoff - MIDI CC #74) and Channel Pressure. The UB-Xa responds only to Pitchbend and Timbre as standard; but all three controllers can be used as sources in the Modulation Matrices and can therefore be applied to any allowable destination. Note on and off are also allocated to MPE channels in order that the notes are individually affected. If more than fifteen (or seven plus seven) notes are played then two or more notes will be allocated to one channel dynamically as necessary. Pitchbend sensitivity for the upper and lower keyboards can be individually set by options 12 and 13 of the MIDI/USB Menu.