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   Fatal Looping observed with XG-Gold & Midi-Ox
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   Author  Topic: Fatal Looping observed with XG-Gold & Midi-Ox  (Read 967 times)
rex
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Fatal Looping observed with XG-Gold & Midi-Ox
« on: Nov 12th, 2002, 2:41am »
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Hi,
 
I have a problem as follows
 
System Setup
-------------------
I'm running Midi Ox 6.5.0  and Midi Yoke on a Windows 2000 Machine.  
I'm driving an XG compatible keyboard  with  Cakewalk Pro Audio 9 and using XG-Gold 3.0 to send the SysEx  data and thus control the effects on the fly.
 
Midi OX is configured thus:
 
      XG-Gold ---> MYoke 1 --> MidiOx
       
Keybd_Out--->Cakewalk --> MYoke 2 --->MidiOx --> Keyboard_In
 
 
Problem
--------
 
When run a pre-recorded Midi Track looping continuously through Cakewalk, and then I adjust some of
the controller settings using XG-Gold (Which sends SYSEX to the Keyboard), I find that eventually
the whole system slows down, and MIDI-OX shows excessive SYSEX activity on its monitor.
 
Even when I stop the Cakawalk track, the excessive activity continues, as though it is generated by XG-Gold
 
Taking a stapshot of the SYSEX axtivity  I get the following on both input and output of MIDI-OX.  It is some sort of Fatal loop occuring somewhere.
 
 TIMESTAMP IN PORT STATUS DATA1 DATA2 CHAN NOTE EVENT      
 000149F3   3  15     F0  Buffer:     9 Bytes   System Exclusive  
 SYSX: F0 43 10 4C 08 09 12 4C F7
 000149F3   3  15     F0  Buffer:     9 Bytes   System Exclusive  
 SYSX: F0 43 10 4C 08 09 12 4C F7
 000149F3   3  15     F0  Buffer:     9 Bytes   System Exclusive  
 SYSX: F0 43 10 4C 08 09 12 4C F7
 000149F3   3  15     F0  Buffer:     9 Bytes   System Exclusive  
 SYSX: F0 43 10 4C 08 09 12 4C F7
 000149F3   3  15     F0  Buffer:     9 Bytes   System Exclusive  
 SYSX: F0 43 10 4C 08 09 12 4C F7
 
Notice that the line is always the same with the same timestamp.
 
I can't tell whether the problem lies with Midi-OX or with XG-Gold.  
 
I'd appreciate any thoughts.
 
regards
 
rex
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Re: Fatal Looping observed with XG-Gold & Midi-Ox
« Reply #1 on: Nov 14th, 2002, 2:48am »
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What you describe sounds like a Long Messgae (buffered) MIDI feedback loop.  Make sure you don't have the same numbered MIDI Yoke port opened for both input and output is a single application, or a loop amongst all applications.  Some programs automatically attach all MIDI input devices...
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