midiphy LOOPA User Manual Download Page 4

                                                                                                                                                                                                                     

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2. Features 

MIDIbox/FreeRTOS (real-time operating system) STM32F4 microcontroller-based 
application resulting in minimal MIDI jitter/latency 

Responsive and optimized UI for an easy-to-use workflow with a fast learning 
curve: it is ideal for recording concepts/ideas in your studio and for live 
performances on stage 

Holds 36 MIDI clips in a matrix of 6 tracks (horizontal) and 6 scenes (vertical) 

Clips contain notes recorded with their original timing, allowing for nearly 
unlimited polyphony and unquantized storage of about 10 000 notes per session 
(polyphony is naturally limited by MIDI throughput). 

Overdubbing (adding notes) without erasing existing notes (looper approach) 

Dynamic requantization of notes at any time (including during recording) and 
real-time application of other LiveFX such as quantized swing and note-skip 
probabilities 

Clip scrolling, clip length changes, clip zooming/stretching and note transposition 
at any time (including during recording) 

Two performance modes with a dedicated knob for live transposition and 
"beatloop", offering different sequence-scrambling time progressions that can 
completely alter a rhythm or melody line while keeping the harmony and sequence 
runtime identical to the unaltered version 

Manual sequence scrubbing/time scratching with a dedicated knob 

Dedicated scene progression knob, launching six new clips for song progression 

Data entry with push-to-accelerate rotary encoders: pushing the VALUE knob while 
turning will expedite changes, useful e.g. for moving a note many steps or 
transposing by many semitones 

High-speed two-key "muscle memory" menu navigation and shortcut SHIFT 
functions for direct clip launching/track mute/ track unmute access from any screen 

Dedicated clip COPY/PASTE/DELETE keys 

Three DIN MIDI OUT ports and two DIN MIDI IN ports allow direct connectivity of 
most classic MIDI gear 

Four virtual USB MIDI IN/OUT ports to drive VSTs/software synthesizers and 
connect to your DAW 

Graphical OLED offering instant live feedback on all operations such as 
transposition, note probabilities, beatloops and more 

Integrated note editor for editing your sequences without a computer/mouse and 
to quickly correct recording mistakes 

Full-sized SD card used to store sessions and for data backup 

Light-weight design and a small case fits into any backpack and can be portably 
powered for hours using a standard USB powerbank 

Very quick boot-up times and automatic last-session recall: continue with your work 
exactly when inspiration strikes and not after a required operating system software 
update :-)

 

 

 
 

 

Summary of Contents for LOOPA

Page 1: ...REQUANTIZING DIY MIDI SEQUENCER USER MANUAL Version 2 05 2019 11 14 written by Hawkeye Peter Knoblach www midiphy com...

Page 2: ...s 9 6 1 SETUP Screen 11 6 1 1 Editable Setup Parameter List 11 6 1 2 Defining Named User Instruments 12 6 2 MIDI ROUTER Screen 13 6 3 MIDI MONITOR Screen 14 6 4 DISK Operations Screen 14 6 5 TEMPO Scr...

Page 3: ...atlooping live transposition and real time effects that tap into your creativity If you have a soldering iron and mid level DIY experience it can be built in a few evenings An extensive build video tu...

Page 4: ...sequence runtime identical to the unaltered version Manual sequence scrubbing time scratching with a dedicated knob Dedicated scene progression knob launching six new clips for song progression Data e...

Page 5: ...the sequencer The time cursor starts moving the current track step or 16th note equivalent positions in the lower part of the display are updated 8 While the sequence is running play a few notes try t...

Page 6: ...s to learn more about your LoopA 17 If you are lost somewhere push and hold SHIFT and the HELP key to get context sensitive information 18 Once happy with your jam don t forget to save it on the DISK...

Page 7: ...ne LoopA has six tracks and six scenes and thus stores 36 MIDI clips in memory The scenes are enumerated from A to F and the tracks are enumerated from 1 to 6 which can be concatenated to 1A or simila...

Page 8: ...certain situations to lock the input to useful increments An example is adjusting track transposition in the clip screen where pushing and holding while turning this knob will transpose in octaves ra...

Page 9: ...ly active track is indicated with a blue backlit key Therefore if a track is both active and unmuted this leads to a cyan color mix green and blue see track three in the above picture The lower row of...

Page 10: ...ay context sensitive help screen describing the functionality of the currently active screen Hold SHIFT press LIVE knob resets the currently active live mode parameter to zero E g if you are in live t...

Page 11: ...ne handed navigation utilizing muscle memory shortcuts to access often used screens Navigate to the Clip Settings page by pushing and holding the menu key and pressing the Clip key then release both k...

Page 12: ...e Setup Parameter List Here is a list of editable setup parameters System Font changes the system font from a normal sharp system font type a to a smoother antialiased system font type b Beat LEDs whe...

Page 13: ...o eight characters for the synth or device and the output port and channel Named User Instruments can be assigned to any output port including USB ports Transform these lines by using a computer text...

Page 14: ...hat can be selected with the upper row keys directly below the OLED Select Select currently active route also select routes by turning the SELECT knob IN P Choose the input port of the active route IN...

Page 15: ...e actual transmitted data 6 4 DISK Operations Screen Save and load Sessions to from SD card using the disk operations screen Scroll through the enumerated sessions with the lower left SELECT knob acce...

Page 16: ...UE knob for accelerated speed adjustments The FASTER and SLOWER commands modify the tempo linearly and slowly while the keys are pressed The METRONOME Metron switch activates a midi metronome that pla...

Page 17: ...rack is easily chosen and also visualized by the blue upper row key and also the inverted sequence position display see the screenshot above Press ARM and record any set of notes with a MIDI keyboard...

Page 18: ...s the whole clip Tip when this operation is active press the DATA knob and turn to transpose full octaves This is handy during live performance Key 4 Sr scrolls the track notes forward and backwards w...

Page 19: ...ushing the DATA knb while turning will accelerate inputs for instance to easily move a note longer distances in the sequence Key 2 Note adjust the note itself here D 3 is shown which could be adjusted...

Page 20: ...dicates that no swing is applied and the note should stay at its quantized position Swing values 50 such as 66 in the example above push every second quantized note forward in time up to the next quan...

Page 21: ...of All will recognize any input from any MIDI IN ports including virtual USB ports Use this to filter the incoming MIDI stream Key 5 Fwd enables live forwarding of received MIDI note data on the curre...

Page 22: ...ning Tip Push SHIFT and press the LIVE knob to quickly switch back from a set live transposition value to zero live transposition Push SHIFT and press the LIVE knob again to cycle back to the previous...

Page 23: ...ays available for talks suggestions and who finally proofread and corrected this manual Thanks man Thorsten aka TK who created MIDIbox the hardware and software platform of the LoopA It would have bee...

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