sysex help, please?

[robotunes]

hi, all

i want to control the vsynth gt's pcm osc sample start. sysex is the only way.

on page 14 of the midi implementation (http://media.rolandus.com/manuals/V-SynthGT_MI.pdf), the address for Start Offset ends with 00 2C. you can see there that the data to send ranges from 0000 0000 aaaa aaaa to 0000 0000 hhhh hhhh.

question: in the sysex string, how do i represent the data bytes 0000 0000 aaaa aaaa to 0000 0000 hhhh hhhh?

i suspect that's 0000 0001 is the first sample frame and 0000 00FF is the 255th sample frame, and so on till i reach the end of my waveform, yes?

trying to suss out what hex string i need to send from my novation ZerO SL MK2 to my vsynth gt so i can control where the pcm sample starts.

any help is GREATLY appreciated. thanks!

[robotunes]

figured it out. i confirmed that the sysex message is indeed 21 bytes long (including F0 and F7). my ZeRO SL MK2 can send messages only 12 bytes long.

only device i know that can send a message that long is the MIDI Tool Box iPhone app, and as weird as it sounds, i'm now using my phone and the discontinued iConnectMIDI to change the sample start time.

unfortunately, i can't do it continuously. off to find an app that will let me use a virtual knob to send the correct sysex so i can control the sample start in real time!

[daX6fantom]

Did you ever find an app to do this?