The Yamaha AN1x Synthesizer mailing list

--- In AN1x-list@yahoogroups.com, "justinkk2001" <mirlin567@a...> wrote:
> I just bought a game port which connects to onboard MIDI (MPU-401) 
> on my PC motherboard.  When this is connected, my synth goes crazy.  
> I'll play some notes and it will spontaneously transpose down a note 
> and then i hit some more notes and it switches to a different voice 
> altogether and pretty much goes crazy.  i'm guessing it's because of 
> the MIDI connection.  
> 

If you were to provide some detailed information regarding your MIDI configuration, 
i.e., what application(s) your running and how your AN1x is setup, it would be easier 
to help troubleshoot. That said, it might be one or two things causing these issues:

1) On your AN1x, check wether the parameter MIDI Ptn Tx Ch under VOICE 
ARPEGGIO/SEQ is set to the same MIDI channel as is parameter Rx Ch under UTILITY 
SETUP. It's possible you are retransmitting the output of the AN1x Arp/Seq back to 
your AN1x unintentionally.

2) If your AN1x is switching to a Voice (program) other than the what you've selected 
from the front panel than it is receiving a program change command from 
somewhere. Your MID Interface is incapable of initiating a program change itself - it 
has to be some application running on your PC or from another device perhaps on a 
seperate port issuing program changes on the same MIDI Channel that your AN1x is 
configured to receive on under Rx Ch.


> I'm wondering if this is fixable and how to fix it?  do i need to 
> get a different MIDI connection altogether?  if so, what should i 
> get?  how is the midisport (via USB) by m-audio?

I wouldn't bother spending more money on another MIDI Interface until you have a 
better understanding of the issues presenting themselves with your current MIDI 
Interface.

Jon