Quote:

Hi,
This is not a BIAB question but still, maybe there is someone here who can help me with the following problem.
I've got the SD 2 and I'm using Sonar. I have found some pretty cool contemporary jazz midi files on the web. Most of them play flawlessly but when I get one that has a pretty dense arrangement or lots of pitch bend events, I will get a note that sticks, which of course ruins everything.And it doesn't seem to be always the same note, so the midi file seems to be OK.
My question is: What can I do to prevent that from happening? Is it a setting in Sonar or is it the ketron itself?
It would be great if someone could help me with this.
Thanks



I don't think that a hanging note problem lies within the SD-2 itself. It is, after all, a State Machine that awaits a command and executes same.

BUT -- if something is interrupting that command, Houston we have a problem.

Most likely culprit is the MIDI connect driver or possibly the IRQ for it is being shared with something else on the computer that is forcing a hardware interrupt at the worst time, such that the SD-2 receives the note on data, but is not getting the Duration data right. (Most MIDI files do not contain Note Off data as it is superfluous if you think about it. A Note On plus Duration value accomplishes the same thing with only half the amount of data needed in a file, you see.)

Sometimes the easiest way to correct something like that is the new MIDI interconnect.

BUT -- if the MIDI interconnect you are using is also your Audio device, you would want to check that critical IRQ table to see if the sound device is being shared with another high bandwidth device on the same IRQ. Not good. Do not take Windows work for it, windows will report that all is okay and the devices are operating properly even if every device on the puter is sharing the same IRQ. Instead, look at your IRQ table and see for yourself. Ideally, you want to see you sound device all alone with its own IRQ number.



--Mac

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