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Posted By: dvjduck Lining Up Notes on Piano Roll Grid - 04/16/14 12:47 AM
I've edited hundreds of midi files in PTPA but never encountered this problem. The file in question was purchased from the MIDI-HITS Company and I've recently worked with and edited 50 or so of their midi songs with no problems whatsoever. I need to customize the format (choruses-verse-instrument break. etc.) of this file but can't get the notes to fit correctly onto the grid. I've tried various tempo and meter options as well as "slide midi music". As you can see in the attached images of the bass part the amount the grid is off beat gets progressively worse with each measure. There is a pickup note off beat 4 measure 3. Then the next 8 notes on (pitch) B2 are "on the beat" quarter notes. Then, by the time you get to measure 14 that same pattern has moved further off the grid. The file sounds just fine when played. But I can't do the editing with it appearing this way.
Any ideas?
Thanks,
Deaton

Attached picture Hold Back 1A.jpg
Attached picture Hold Back 2.jpg
Posted By: rharv Re: Lining Up Notes on Piano Roll Grid - 04/16/14 10:45 PM
Is this as close as you can get it? Adjusting the Tempo map should allow getting closer than this, I would think.
What is the Tempo in this screen shot?

What is the location of The first 'B2' in measure 14?
Posted By: dvjduck Re: Lining Up Notes on Piano Roll Grid - 04/18/14 02:07 AM
The tempo for the entire song is 124 bpm (no variation) with a meter of 4/4. When I "slide midi music" to get any particular point to line up with the grid, everything after that point gets progressively farther off the grid.
The first B2 in measure 14 should fall on 14 - 1 - 0.
That pattern happens throughout the song but each time it appears in "Piano Roll" it is off the grid farther to the right than it was in previous measures. The BOX link below is a short mp3 of the beginning of the file as played in PTPA (2013) on an Audigy 5 Rx soundcard.
Thanks,
Deaton

BOX Link: https://app.box.com/s/edtyc1ik2jyjtph4iqd0
Posted By: LynB Re: Lining Up Notes on Piano Roll Grid - 04/19/14 10:55 AM
This looks as though the notes were recorded via a Midi contoller. Have you tried the "Snap" feature to line up the notation better??
Posted By: rharv Re: Lining Up Notes on Piano Roll Grid - 04/19/14 01:26 PM
MP3 tempo seems closer to 122 here ..
The MIDI would be nice to have instead of mp3, then maybe it could actually be fixed.
Posted By: dvjduck Re: Lining Up Notes on Piano Roll Grid - 04/19/14 04:48 PM
I loaded the file in question into ProTools. In the midi editor window it looks the very same as in PTPA. As the song progresses the notes that should fall "on the beat" are farther and farther to the right. I'm suspecting a discrepency between what is in the file and what I enter into the Tempo Map window. I've tried tempos from 110 to
130 but it still won't line up. I've posted the file on Box at https://app.box.com/s/9rlwfh3mxldqtnvy39zr in hopes of solving this.
Many Thanks,
Deaton
Posted By: rharv Re: Lining Up Notes on Piano Roll Grid - 04/20/14 12:45 PM
Rather than post the fixed file I'll give you the steps taken.


When I opened the file here it had a tempo of 130 set on it.
(You had said 124 earlier but that is not what it opened to)

I selected all the tracks
Clicked 'Edit - Length of MIDI Music'
I left the original tempo set to 130 and changed the new tempo to 132.142 , made sure to click the arrow to select the whole song, then clicked OK.

The notes were in alignment at measure 33 and beyond. Any finer tuning you can now tinker with yourself.

In your predicament you can't simply change the tempo, you need to change the length of the MIDI data to fit a tempo. This will be relevant to the existing tempo.
Posted By: dvjduck Re: Lining Up Notes on Piano Roll Grid - 04/21/14 01:21 AM
Yes, Yes, Sweet Success! Thanks to rharv the file is fixed. With the "length of midi music" advice and some careful quantizing the entire file is correctly "on the grid."
Deaton
Posted By: rharv Re: Lining Up Notes on Piano Roll Grid - 04/21/14 11:40 PM
Try that in some other DAWs.

PT/RB do some pretty powerful MIDI editing. Just need to tinker around a bit.
I remembered solving this years ago on a file I had .. it just took me a while to get around to remembering how to fix it.
(Yer getting old when you need time to get around to remembering things)

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