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Hi everyone,

I’ve spent a few days trying to figure out the interactive music system and I have a question about the best way to set up a piece of music that has time signature and/or tempo changes in it.

Let’s say for example I have a piece that uses a time signature of 3/4 for bars 1, 2, 4, 5, 7, 8, and a time signature of 4/4 for bars 3, 6, 9. I have three "stems" (1 low intensity stem that is synth parts only, 1 medium intensity stem that is synths and percussion, and 1 high intensity stem that is synths, percussion, and strings) and each stem is cut into clips of one bar each. Finally, I want to be able to use a parameter to control which stem is playing based on the intensity of the situation.

What I’m finding is that if I set up a segment that contains all the clips from a given intensity, they all have to share the same synchronization settings even though they’re different in each clip. If I break it out so that each segment only contains one bar, the logic of setting up a song like this gets pretty complicated and really hard to manage and debug. If I leave each "stem" as one large clip, then I can’t find a good way to control where the transitions are allowed to happen.

Has anyone tackled this issue yet and found a good solution?

Thanks!

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Unfortunately, Designer’s interactive music system is exactly as you have observed it to be; The only way to set time signature changes on a per-bar basis is to give each time signature its own segment.

Nevertheless, it may be possible for you to simplify your transition logic by linking the segments that have samples back to sample-less segments that contain logic dictating which sample should play next; While this won’t make your transition logic any simpler, it should allow you to avoid duplicating it in different places, making it easier to set up and maintain. An extremely simple example of this can be found in the "layer, parameter (rock-guitar)" theme in the ‘examples.fdp’ that’s included in the Designer 2010 installation.

Incidentally, while FMOD Studio’s interactive music system is designed with tempo- and time-signature changes in mind, some of the features required to deal with your situation are still under development at this time.

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