Rich Rath

I am hoping for some help on this problem. I am making a guitar note transposer so that if I mark a chord on the fretboard (thanks to @SourceAudio for that part!) in one tuning, the same notes will then be selected when I switch to a new tuning. I have the patcher that does the transposing included but not hooked up (p placenotes). Right now, I am having a problem with syncing the two jit.cellblocks in this reduced patch (one-string only!).

On the left side is a 25-row, 1 column jit.cellblock filled with integers indicating the note number, and on the right is the same thing in MIDI notes, with the two synced. The MIDI nt one is the user interface and most of the calculations take place on the integer side on the left, but the right has to be able to select and unselect cells synced with the left, being the UI.

Unselect is the hard part. I am using the undocumented "sync select -1-1" message to toggle selection of a note on the fretboard (i.e. right-hand jit.cellblock). This works great on the midi note side. Selecting a note once selects it, and selecting again unselects it. But the integer side will not unselect when the message comes from the sync output (outlet 3) on the MIDI/right side jit.cellblock. It works fine in the other direction: If I select and unselect an integer on the left side, it selects and unselects the corresponding MIDI note on the right. Also, if I just make a "sync select -1 -1" message and bang it to the right inlet, it sets fine. This and the printout lead me to think there is feedback sending the underlying "sync select 0 n" to the integer side after the unselect message, but I have not been able to sort out where it is coming from other than I think I have an unwanted bit of feedback loop.

I have tried a few things to work all on one side or the other or just use one cellblock, but so far, I need both to keep things working. Any help on passing the unselect message from the MIDI nt jit.cellblock to the integer jit.cellblock would be appreciated.

Thanks in advance, and here is the patch:

notepickerdebug.maxpat

I am hoping for some help on this problem.  I am making a guitar note transposer so that if I mark a chord on the fretboard (thanks to @SourceAudio for that part!) in one tuning, the same notes will then be selected when I switch to a new tuning.  I have the patcher that does the transposing included but not hooked up  (p placenotes). Right now, I am having a problem with syncing the two jit.cellblocks in this reduced patch (one-string only!). 

On the left side is a 25-row, 1 column jit.cellblock filled with integers indicating the note number, and on the right is the same thing in MIDI notes, with the two synced.  The MIDI nt one is the user interface and most of the calculations take place on the integer side on the left, but the right has to be able to select and unselect cells synced with the left, being the UI.  


Unselect is the hard part.  I am using the undocumented "sync select -1-1" message to toggle selection of a note on the fretboard (i.e. right-hand jit.cellblock).  This works great on the midi note side. Selecting a note once selects it, and selecting again unselects it.  But the integer side will not unselect when the message comes from the sync output (outlet 3)  on the MIDI/right side jit.cellblock.  It works fine in the other direction: If I select and unselect an integer on the left side, it selects and unselects the corresponding MIDI note on the right.  Also, if I just make a "sync select -1 -1" message and bang it to the right inlet, it sets fine. This and the printout lead me to think there is feedback sending the underlying "sync select 0 n" to the integer side after the unselect message, but I have not been able to sort out where it is coming from other than I think I have an unwanted bit of feedback loop.

I have tried a few things to  work all on one side or the other or just use one cellblock, but so far, I need both to keep things working.  Any help on passing the unselect message from the MIDI nt jit.cellblock to the integer jit.cellblock would be appreciated.  

Thanks in advance, and here is the patch:


Hi all, 
I am hoping for some help on this problem.  I am making a guitar note transposer so that if I mark a chord on the fretboard (thanks

problem-syncing-two-jit-cellblocks

here is simpler approach to sync 2 cells,

but also another idea - why not both - note number and name in same cell ?

Was too complicated...
here is simpler approach to sync 2 cells,
but also another idea - why not both - note number and name in same cell ?

P.S. I had to re upload the patch, because created in Max 6 - all ok, 

tested on Max 8 did not work, jit.cellblock seems to behave differently.

P.S. I had to re upload the patch, because created in Max 6 - all ok, 
tested on Max 8 did not work, jit.cellblock seems to behave differently.


I saw that you need cells separated because only note names would be visible

No problem, just swap the cell columns and hide the numbers

I saw that you need cells separated because only note names would be visible
No problem, just swap the cell columns and hide the numbers


Giving this another thought, I found a simpler solution,

using coll to store selected note as symbol and then recall it's

One could add other buttons, like clear all or unselect all etc, easily.

Giving this another thought, I found a simpler solution,
using coll to store selected note as symbol and then recall it's
cell position if string gets transposed.


problem syncing two jit.cellblocks