MPX-8 HACK - Fresh Nelly Musik
Contents
1. Note 122 Encoder Down Note 123 Encoder Up Note 127 Power off Reset Program Change Patch YES Channel 10 Only SysEx NO Poly Aftertouch No but sends if hold Notes Output TX Note s set to pads Velocity also2. create a little Pattern in FL Studio for each up 3 down 3 up 2 down 2 This makes organizing these selections much easier Pitch shifting is a really cool thing to do with samples and can t really be done with MIDI keyboards on drums Randoming up a drum sequence is amazing but getting them back is impossible without a re load Program Change which is dangerous during a song E Wave File Shifting Using the same method as pitch shifting one can sequence a new sample into a pad on the fly The only 2 things to be careful about is That no other pad is played before sample load starts which would cancel the load and How long the sample will take to load before it can be played It s experimental enough if the samples all stayed the same i e snare2 wav is always right after snare1 wav but they may not This puts an element of surprise into the mix which is really Really cool when jamming in the studio not so cool when on stage F Other Controllable Parameters Any of the parameters can be changed the same way as above The changes aren t permanent so just go wild Level isn t much fun but Trigger could be Reverb might be but most of that should be handled be post FX on the mixer board right M D assignment should be left alone unless it becomes useful in a silly way Pan might make sense to play with it goes from L R in 21 steps so that s a lot of notes IV Good Practices As shakey as the foundations of MI
3. to song but only if things aren t messed up royally by the above scenarios C Reset A sure thing when loading a song albeit adding yet more time to a load is to have the sequencer call a Reset at the end or during loading of a song Stopping a song early if things aren t good could cause an abort condition which would then send the Reset Note Reset is RESET Channel 10 Note 127 G 10 D Pitch Shifting Among other menu controls Pitch Shifting of a sample while it is being played requires special attention to how the MPX 8 will react to MIDI controls These controls are Select Button Channel 10 Note 121 C 10 Select Button Channel 10 Note 120 C 10 Dial Up right Channel 10 Note 123 Eb 10 Dial Down left Channel 10 Note 122 D 10 These notes placed in a MIDI sequence will control the MPX 8 s display amp functions but once again timing considerations are ever present 1 More than 4 notes in 1 beat 1 4 note can be dangerous Good for random though 2 Remember that a pad must be selected before it can be pitch shifted Play it 3 Don t allow any other pad of the 8 to play during the pitch shift change So the proper sequence to doing a simple pitch shift is a Sel 3 times b Play Pad Note last Zero Velocity WON T WORK Yay Akai c Dial Up Down to shift pitch 4 tones d Play new pitch on pad or select others to shift e Sel 3 times to put back to Kit to avoid confusion now
4. DI controlling the MPX 8 are there s a few Good things to do to keep things running smoothly A Stopping a song If while writing a song it needs to be stopped to loop back or looped for that matter make sure it s not inside of a Menu Selection This can mess things up so manual re selection must be done Aborting a song while performing would definitely require a Reset if there s any Menu Selecting going on inside the song This needs to be implemented into the controller sequencer B Loading a song When a song loads into SIAB or a DAW sequencer the PC should be sent long before the song gets playing Check to see how long it takes and become familiar with it If there s other drums perhaps have those start the song then cut in with the beef after a few bars C Defeating MIDI PC Control While writing a song it might be helpful to have control over the encoder knob for changing menu items etc In FL Studio for example the PC sent at the beginning of a song play will cause an override and the encoder will no longer be connected To defeat this a reset or power down up will allow the knob to become active again At this point the knob must turn through 4 steps before the MIDI PC control is permanently defeated V Tips amp Tricks Here is a list of tricks I ve learned while messing around with the new hack Randomization Encoder selection can appear random and is if the notes 122 amp 123 are really cl
5. NOT a good idea but if it has to be done i e a different kit for a different break in music be VERY careful Timing timing timing B Preventing Program Change Failures Continuing with the previous section mis calculation of a load time for a song can be catastrophic For example the song has started but the MPX 8 is still loading the Kit Once completed the MPX 8 will blurt out all of the drums it received via MIDI during the load at once What a brilliant method to let you know it s done lagging behind Bang An even worse scenario is that a Pitch Shift below or other menu item is underway and the Kit hasn t yet loaded and thus doesn t see the command to go to that menu space As soon as the parameter knob is changed the change will happen to the Kit selector and a whole new kit will load who knows what The only way to fix this is a full reset or power down up Next Section The PIC chip in the MPX 8 Hack can see if the present menu item isn t on the Kits window and will change it back before dialing But if samples are loading the MPX 8 ignores everything except the Stop All dual button feature but continues trying to load the next amp the next A good rule of thumb is to allow a bit of extra time for things to happen If a sample in the kit is changed to a bigger one the load time will change thus the start time must be delayed longer The PIC chip inside the hack keeps track of the selected Kit from song
6. Vi Vil MPX 8 HACK MIDI FIX USERS MANUAL by Sandra Sims ABOUTUS TS secre vapeccie tense sncensineqrencarcidanndnns pg 2 General Panel Changes csceceeeeeeeeeeeeeeeeeeeeeeeeees pg 2 Using MPX 8 Via MIDI 0 ceeceeeee eee eeee eens ee eeeeeeeeee pg 3 A Load Time Considerations Program Change B Preventing Program Change Failures C POSED E ic cocn easnts aadants cee S pg 4 D Pitch Shifting E Wave File Shifting F Other Controllable Parameters Good Practices siiani iaaii iana iia i pg 5 A Stopping a song B Loading a song C Defeating MIDI PC Control TIPS SETHCKS A E E pg 5 Troubleshooting sinensis cncsudricnianatetoumiabesnessanaevarewandeiins pg 6 MIDI Implementation Combined ceeseeeeeeeeees pq 6 l About the fix Several aspects of the poorly programmed MPX 8 have been fixed With the Hack in place the MPX 8 now 1 Recognizes MIDI Running Status messages so works with any hardware 2 Sorts the dreaded MIDI clock mid sentence insert and recovers the message 3 Recognizes MIDI Program Change Messages 4 Has MIDI controllable menus 5 Can do a power up Reset from a MIDI message Note 127 Note the bounce kill function in original MIDI Fix Stand alone box is not present in this version It limits high speed snare rolls and seemed too troublesome Because of the slow and poorly timed Encoder knob the MIDI controlled operation isn t lightning f
7. ast But it s fast enough better than before See Section III A ll General Panel Changes Apart from the extended start up time 3 4 seconds longer than before the panel will act pretty much exactly like before until there s MIDI Program Change input on Channel 10 At this point the encoder knob no longer works which is the proper MIDI state to be in To stop this from happening after the unit has powered up use the encoder to select a kit or whatever This will lock out the MIDI encoder take over routines Because all other MIDI input still works as usual this can be useful during setting up a song But keep in mind the encoder knob is in your hands not the song s Only a Reset will re enable the MIDI PC control New LED Indicator Next to the AKAI Professional Logo there is a new LED installed This is to indicate a short in the encoder This isn t a disastrous condition but if stuck at the peak of a click could cause the startup sequence to Kit e01 to malfunction i e stays on Kit i01 If the LED just stays on then touch the knob to make it go out During MIDI control this condition can still jam changes if directly in center of click The LED also shows encoder selection by you or the MIDI input controlling the MPX 8 The short flickers indicate each step of an encoder movement lil Using MPX 8 Via MIDI This interface is not the usual MIDI interface mostly because of the slowness It has to confo
8. ose together and erratic This can be good for pitch as well as loading samples Level Variance Randomizing as above the level setting on different samples can be humanizing They should be slightly skewed upwards though or drums will disappear occasionally Hold Triggering Setting or Randomizing the Hold item allows longer samples to be played for really short long looping times which varies a mix nicely Some portamento drums tones can sound completely different Notes must be extremely short to change a snare Encoder Knob Shorts can still affect a load sequence if the knob is in just the right position Just tap it a couple of times fairly hard with finger so as not to turn it to make sure Check LED is off VI Troubleshooting Problem Solution a f After song starts the KIT moves to another KIT even when The song needs to be LOADED so the PC patch gets it started on the right one sent FL Studio Do a reset and re load song i Check that there is a SD Card in the machine Check for yellow LED encoder shorting tap it ome MIDI input has sent a PC and disabled it Try a reset If still does the same remove MIDI feed to input Vil MIDI Implementation Combined MIDI Data Recognized Info Notes Pitch Wheel NO Control Change NO Sent to MPX8 inside but not sent Through to MIDI out Channel 10 YES Notes 0 127 Note 120 Select All notes for drums except gt Note 121 Select
9. rm to the MPX 8 s panel constraints The following should be understood to include the MPX 8 in a MIDI song A Load Time Considerations Program Change The main reason for building the MPX 8 Hack was to achieve MIDI control of the drum kits stored inside the SD Card in the MPX 8 and turned out to be the most difficult Selecting a Kit via MIDI can be done using the MIDI Program Change Patch The kits are in order from Patch 1 piano to Patch 99 with only one requirement All 99 Kits must be present on the SD Card inside Kits folder even if they re empty This is very important because of the selection of built in kits i00 to i08 must be in a predictable patch number Patch 100 to 107 These are very fast loading but take a while to get to Timing Considerations Every Kit on the dial takes nearly 1 5th of a second to pass as dialing toward the Kit in mind This means if the present Kit is e01 and you MIDI want to go to Kit e99 it s going to take 17 seconds to get there That s after the 3 second selection time out which makes 20 seconds Then there s the sample load time which depending on the samples takes about 1 second for every 100k which is awful isn t it have better speed on an ATMEGA USART As the kits increase in number so will the dialing wait times It s an unsolvable problem but starting a load ASAP is always a good idea See tips amp Tricks for more Multiple Program Changes in one song is
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