The MIDI Guitar 3: Five dimensions of touch - MPE for guitar
In this video, I go over fundamental concepts for explaining the Jam Origin MIDI Guitar 3 take on MPE as I understand them. I start from the ROLI ”Five Dimensions of Touch”, and break down the MIDI messages from the ”gestures” they use to its smallest components; computer or synth transistor states. From there, I go over bite, byte, MIDI messages, status/data bytes, before going into how MPE utilizes these. I try to create a natural backdrop for any future discussions about Guitar and MPE by explaining how MIDI Guitar 3 uses these concepts. This should give anyone interested a fair chance to assess developers’ claims, and also provide a common ground for us to discuss improvements and applications to the existing paradigm. 0:00 Intro 1:50 The ROLI Seaboard Gestures 2:24 MIDI - Musical Instrument Digital Interface 3:11 A Sequential and Serial Protocol 4:24 An analogy between transistor states and phonemes 5:30 A MIDI Message is made up of ”One or More Bytes” 5:46 The three ways of describing the byte 6:45 How MIDI uses bytes 7:00 Status Bytes and Data Bytes 8:00 The reason behind the 0-127 (7-bit) grid 8:45 MSb - Most significant bit 9:10 MIDI Messages - Note-on 9:32 MIDI Messages - Control change 9:55 MIDI Messages - Program Change 10:22 MIDI Messages - Channel Pressure 10:34 MIDI Messages - Pitch Bend 10:45 MIDI Messages - LSB/MSB 14-bit resolution 13:47 Inner workings - Note-on & Note-off 14:32 What is a valid note-on? 16:40 Inner workings - Note-on: 0 velocity = Note-Off 16:40 Inner workings - Running Status 17:49 MPE - MIDI polyphonic Expression 20:50 Legacy MIDI 1.0 vs. MPE Data comparison 25:20 The gesture dimensions again 26:60 Different controllers use different controllers 28:10 Halfway to MPE - Mono Aftertouch and a CC74 slider assignment 32:14 The JamOrigin take on these Five Dimensions 33:18 MIDI Guitar 3 only uses information from the incoming audio 33:48 MIDI Guitar 3 - The Strike dimension 35:23 MIDI Guitar 3 - The Pressure dimension 37:19 The Dynamics Module 38:43 MIDI Guitar 3 - The Brightness dimension (CC74) 41:30 MIDI Guitar 3 - The Glide dimension (Pitch Bend) 43:40 Master (channel) Pitch Bend 43:56 The Lift dimension - Release 45:00 Note-off and long ADSR release 46:10 Note-off velocity = the last sent Pressure value 47:02 Using Note-off as a trigger 48:20 Additional Control - adding a pedal 50:10 Afterword If you want to use any of the MIDI Monitoring software I use in this video, here they are (and they are also free): https://github.com/gbevin/ShowMIDI https://www.snoize.com/MIDIMonitor/ And for the trial version of MIDI Guitar 3 (beta): https://www.jamorigin.com/beta/ For any questions and suggestions, you are most welcome to follow me on Patreon: patreon.com/LoFiLeif #midiguitar #jamorigin #mpe #best #midicontroller #software

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