The Yamaha AN1x Synthesizer mailing list

>I've had the an1x for about a year.  No problems at all, however I am
>wondering what sort of midi data the thing is constantly sending??  I
>have a unitor 8 and the an1x is the only device that is causing the
>unitor to constantly flash on it's corresponding midi channel.  I
>have flipped thru all submenus, but cannot find the cause.  Anyone
>know what this thing is constantly sending, can it be disabled?
>Its not a problem, I am only curious.

It's called "active sense" or "running status."  Whenever the synth is not 
actively used, it sends out an "I'm still here" message every 
~300mSec.  It's supposed to prevent stuck notes by detecting when devices 
drop off the line, but various manufacturers seem to respond differently to 
it, and it actually seems to CAUSE stuck notes in some combinations, 
because the receiving device has to filter it out of the 
stream.  Personally, I wish it could be turned off.  I notice that my 
MIDIMan 8x8 patchbay accepts the command (input flashes) but doesn't pass 
it along (output light stays off), even when in Patchbay and Thru modes.

Regards,

-BW

--
Bruce Wahler
Design Consultant
Ashby Solutions"
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