Remote pattern change and midi clock issue

[k2z3k0]

hello 

i have a problem with switching patterns via remote midi cc 112-115 and time clock.

 

Mbseq and Octatrack (via TM-1 ,is Elektron made usb to midi interface for faster(10x) midi transmission ,Tubo mode is ON)  are connected to my computer via usb. 

 

in my computer i am sending Mbseq midi clock and notes on channel 1 to play samples in Octatrack on channel 1,Ocatrack sample player is set to time stretch mode so dependent of midi clock

 

Mbseq patterns are controlled via launchpad via MIDI in 1 ,i made it so that via top row buttons i can switch all four patterns ,sort of groups

so under each of eight buttons i have set of four Mbseq patterns ,so e.g button 1 mbseq patt 1,1,1,1 ,button 2 mbseq patt 2,2,2,2 etc..

i also can recall individual patterns with launchpad

 

mbseq is set to

-track sync steps per measure 32

-patt change sync each 8 steps

-pattern change sync on,

-restart all tracks on,

 

ok so i have simple pattern with break sample in time stretch mode ,

when i am starting press constantly on my launchpad only pattern 1 button on my launchpad ,pattern is being recalled every 8th step as expected

sample is playback as it should

 

but,when i press my launchpad group button  to recall all four patterns on mbseq ,what happends is pattern is being recalled,but just when recall happends midi clock slows down ,

and then comes back to normal when i stop pressing 

and because sample that is played by OT is in time stretch mode,so dependent on midi clock this is why i can hear that,

also if i recall independently two patterns i can hear that but little less then when all four are recalled

 

i also checked with monitor and i am sending clear cc 112 ,113 ,114 ,115 so no extra garbage is getting there

 

this situation does not occur when i turn off Turbo MIdi Tm-1,or when i recall only one pattern,or when i recall pattern from MIDIBOX it self via panel,

or when sample is not in time stretch mode.

 

i am attaching two example recordings,

so you can hear what happends for your self,

one is just wav from octa,other is from ableton

 

-in octa example

in the middle of first part i am starting to recall all four patterns constanly with Turbo Midi off,and sample is playing correctly 

in the middle of second part i doing same thing but with Turbo Midi on,and clearly you can hear sample speeds down for a moment

 

-in ableton example

once im starting to recall all four patterns you can see that bpm counter is going from 154 to 147,and you can hear same playback speed is dropping

 

so in conclusion

1.i think is possible that midibox gets little wierd when more patterns are recalled and midi clock is getting bit flaky during switching ,however internal Midibox Info does not shows any drops ,CPU Load goes 10% higher

2.maybe this is somehow regulated by 31250 midi bus speed and is not audible when using din 5 ,but becomes a problem when going over usb and bus speed is higher .

 

 

thank you 

bests

 

 

Edited May 6 by k2z3k0