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dcuny Offline OP
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How about an option that allows the MIDI melody to help "shape" the soloist?

I assume that BIAB currently makes decisions on what choice of RealTrack soloist "audio chunk" to use based on the current chord, the duration, and no doubt some other parameters to keep the soloist from jumping around randomly.

For the sake of discussion, let's imagine that each "audio chunk" had a "target note" a target associated with it. So BIAB could segment the MIDI melody (using duration, large skip, etc.), and determine what "target note" best represented that chunk of melody. It would add that into the factors it currently uses for creating solos.

I suspect the biggest problem with this sort of feature would be that it would create unreasonable expectations. That is, people might think that "Follow MIDI Melody" at 100% means that the soloist would generate a solo exactly the same as the melody. Obviously, that's a too much to expect. And yes, I know I can always use MIDI to generate a solo.

Still, I think this could me a reasonably nice feature.


-- David Cuny
My virtual singer development blog

Vocal control, you say. Never heard of it. Is that some kind of ProTools thing?
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The problem with your awesome idea is that real tracks are not notes they are full recordings of audio that break down to bars and parts of bars, but not to note values. So it can't go that far.


Lenovo Win 10 16 gig ram, Mac mini with 16 gig of ram, BiaB 2022, Realband, Harrison Mixbus 32c version 9.1324, Melodyne 5 editor, Presonus Audiobox 1818VSL, Presonus control app, Komplete 49 key controller.
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dcuny Offline OP
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Yes, I'm aware of that limitation. You could still use the "primary" notes to guide the melody.

In fact, I suspect that's what RealTracks already does to keep the solo from bouncing around excessively.

But on reflection, I suspect the final product would still be too dissimilar from the source to make it worth doing. David Cope's written a program (EMI) that works in essentially the same way: it's got a database of a composer's music, and it creates new melodies by replacing bars of the source material with "equivalent" bars of music in the database. The result can be very compelling - but it's hard to recognize the source once enough of the original material has been replaced - it sounds like a new work.

(To be fair to David Cope, EMI is actually much more complex than I described it. What I'm describing is one of him "micro" versions of EMI.)


-- David Cuny
My virtual singer development blog

Vocal control, you say. Never heard of it. Is that some kind of ProTools thing?
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Actually i do not think that would still work. Real tracks as I said are bars of premade patterns, there is no way to pick out notes individually. And the reason solos work fairly well, but not as melodies is that they are bars of typical chordal riffs. The follow the basic properties of a chord structure, but can't do anything near a melody follow. In fact they do bounce around sometimes and are totally unuseable on some chord patterns. This is because as groups of notes they are stuck in their patterns and can only break down so far. Midi melodies can have no effect on them at all they are controlled by bar part markers, and chord based key signatures.

Maybe at a later time when the technology PG has designed is futher along maybe note based RTs can be developed so that they can be midi note driven. That would be cool, but think about it, would that be any different than sample base synthesis? You would still ahve problems with midi bends and such, or eliminate that and go with basic audio notes but then all control goes out the window.

Still an always interesting subject.


Lenovo Win 10 16 gig ram, Mac mini with 16 gig of ram, BiaB 2022, Realband, Harrison Mixbus 32c version 9.1324, Melodyne 5 editor, Presonus Audiobox 1818VSL, Presonus control app, Komplete 49 key controller.
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I looked up David Cope, his work is totally midi based, and therefore completely different than REaltracks. The only midi base in RT's is the fact it creates a midi based score for printing and for graphical fret, and keyboards on screen. Still it is not midi based.


Lenovo Win 10 16 gig ram, Mac mini with 16 gig of ram, BiaB 2022, Realband, Harrison Mixbus 32c version 9.1324, Melodyne 5 editor, Presonus Audiobox 1818VSL, Presonus control app, Komplete 49 key controller.
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dcuny Offline OP
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Quote:

I looked up David Cope, his work is totally midi based, and therefore completely different than Realtracks.



I'm sorry, I'm being unclear here.

I'm talking about the basic algorithm here. Imagine you've got the following "original" melody - "Q" means quarter note, "H", is half note, etc:

C4Q D4Q E4Q F4Q | G4W

Also, you've got the following "database" of melodic snippets:

  1. C4W
  2. D4H F4Q A4Q
  3. F4Q A4Q C5Q A4Q
  4. G4H D4H

It doesn't matter what the actual content of the database is. It could be MIDI or audio. The goal is to create a new melody that "best" matches the melody, but only uses material in the musical database. With David Cope's program, the database consisted of phrases culled from similar compositions. In BIAB, the database would be the collection of RT phrases.

The first bar of the melody is:

C4Q D4Q E4Q F4Q | G4W

For simplicity, I'll say the rule for finding the "best" match is to get a snippet from the database that starts closest to the melody. So for the first measure, we'd replace it with:

C4W | G4W

Looking at the second measure:

C4W | G4W

The "best" match in the database is:

C4W | G4H D4H

From this simple example, you can see that you're not going to be able to create a solo that resembles the original melody very closely. It will follow the general contour of the melody. But is that enough for the listener make a correlation between the two? Because if they can't, there's no point in doing it.

You can also see that if a melody revolves around particular notes that don't have many matches in the database, you're going to get a solo that consists of the same set of snippets being reused again and again.

Most listeners heard EMI's compositions as being derivative from the original, but because it used such a large database to pull replacement material from, they would have difficulty recognizing what the source material was. Based on that, I'm guessing that it's probably not a good technique for creating solos that correlate strongly back to the original melody.

Then again, Mr. Cope discarded any compositions which were too obviously copied from the source, so I couldn't say for sure.

Did that clarify things?


-- David Cuny
My virtual singer development blog

Vocal control, you say. Never heard of it. Is that some kind of ProTools thing?
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No I thought you were clear. But you are still asking for the soloist to follow a melody note pattern to develop a solo that is in the basic note range as the melody, and that is not how RTs work, it is a different process. Still what you want is there, in the midi soloist and using superior sample synths it is very possible.

There is also the melody maker feature in BiaB that can do some of what you want.

Definately an interesting idea, but certainly a far different system than RTs


Lenovo Win 10 16 gig ram, Mac mini with 16 gig of ram, BiaB 2022, Realband, Harrison Mixbus 32c version 9.1324, Melodyne 5 editor, Presonus Audiobox 1818VSL, Presonus control app, Komplete 49 key controller.
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