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  #1  
Old 01-28-2017, 04:05 PM
Tim Mariott Tim Mariott is offline
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Default Finding stuck notes in MIDI imports

Sherry

It's that time of year again when I am importing a whole lot of choral scores to make into practice files for our choir. My process is to scan them into Photoscore which does a reasonable recognition job and exports them as MIDI I then load the MIDI files into Composer to tidy up and make the emphasised files that we need.

However some, but by no means all of the MIDI files have a whole lot of stuck notes which makes them useless. I know I can turn off playing stuck notes but what I need to do is to find them, delete the notes in the measure containing the stuck note and then re-enter them. This normally clears it up.

But it is a very laborious task to go slowly through each staff, listening out for any stuck notes, working out which measure to re-input, making the correction and then finding the next one.

Do you know of any diagnostic tool that I might be able to use to locate stuck notes? Presumably I might have to do this in the MIDI file before opening in Composer.

As an example I am attaching one file which is driving me mad at the moment. I have already spent several hours on it and still keep finding more stuck notes. I am attaching the MIDI and the current state of the Notation file. There are lots of stuck notes starting around measure 110.

Any suggestions to restore my sanity would be gratefully received.
Best wishes
Tim
Attached Files
File Type: mid Half a sixpence Henek.mid (35.0 KB, 2 views)
File Type: not Half a sixpence Henek.not (447.5 KB, 2 views)
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  #2  
Old 01-28-2017, 06:16 PM
Sherry C's Avatar
Sherry C Sherry C is offline
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Default Re: Finding stuck notes in MIDI imports

Hi Tim,

I use Neuratron's "little brother" Photoscore MIDI Lite myself, and also occasionally get the "tied note that goes on forever", and I think this is what you are alluding to. For my scores, it's typically easy enough to find but it sounds like you're wading through a lot. The Piano Roll view probably isn't going to help you a ton because you have all those chords and voices, and it's not always easy to decipher the notes that should be held versus the ones that were incorrectly tied and exported from Photoscore (that's not a diss on them - I'm actually pretty impressed with the quality of the OCR in the Lite package!)

There is a tool that may be helpful for you - GNMidi. It's a no-frills tool, but can do some pretty cool things like look for all the long notes (I'm not sure how you change that parameter) or short notes, or remove hanging notes.

When I used "Remove hanging notes" on your .mid file, it only removed 2 notes. Half a sixpence Henek-hanging_notes.midAgain, I'm not sure how that parameter is determined, nor how to or if it can be changed.


I also used the "Look for long notes" command, and it gave me more notes. See the attached .txt file - you'll need to divide the "location" number by the number of ticks per measure, and there are 480 ticks per quarter note, so you can use that and the meter to determine what measure those notes are in. Half a sixpence Henek_long_notes.txt Again, I'm not sure if you can change the definition of "long note", nor how you'd do it, but at least it's a start.

You can find GNMidi at www.gnmidi.com It's currently 36euro (includes tax) You can try it free for 14 days to see if it does what you need; after that you have to have a paid license. I find it immensely helpful in analyzing files that I find on the internet if they're "weird" for any reason (some folks are more savvy than others at creating good MIDI files ).

Hopefully some of the above is helpful, or at least gets you headed in the right direction.

I'm also curious - it looks like you're using the full-bore Photoscore. Are you pretty happy with the results from multi-part scans? If you'd prefer to discuss that aspect privately, just shoot me a message - whatever you're comfortable with.

ttfn,
Sherry
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  #3  
Old 01-29-2017, 01:57 PM
Tim Mariott Tim Mariott is offline
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Default Re: Finding stuck notes in MIDI imports

Sherry

Thanks as always for your most helpfu and speedy reply. I will have another go with Paino Roll view as it is not something I often use and by the time I get to the stuck notes I have normally separated out the parts on to their own staves.

I will also have a look at GNMidi.

I will send you some thoughts on Photoscore afetr I have compared the fulland Lite versions.

Best wishes
Tim
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