I'm currently demoiing Sumu. I imported a sample into Vutu, analysed it and resynthesized it, then exported as a .utu file. When I played back the resynthesized sample in Vutu it sounded almost the same as the original, which was promising. However, when I imported the .utu file into partials module of Sumu it sounded nothing like the original sample, and also was truncated significantly. The original sample is about 2 secs long and the playback in Sumu was only about a fifth of the length, and completely unrecognizable. What am I doing wrong?
Hi and thanks for your question. My guess is, Vutu generated more than 64 partials in the .utu file. When you export a file for use with Sumu you have to look at the "max active" number in the Vutu info display. If this is more than 64, Sumu, will not be able to play the sound and it will be as you describe.
Vutu allows exporting these files so they can be used in other software. It's open-source and I did not want to make it completely Sumu-specific. But, I should enable a warning or some nicer way of preventing this for Sumu users.
In this video, I show using the controls in Vutu to manage the number of partials: https://www.youtube.com/watch?v=crvpsnbLtt0