I'm almost certain that the missing dependency is rubberband. I'm not sure which version is compatible with both Qtractor/Samplv1 and your distribution, or where to find it.
As I mentioned before, try extracting the .deb file as if it were a zip. Two compressed files will appear; extract data.tar.zx. Now you'll see a folder usr/lib/lv2/, and that's where you'll find the plugin. Install it locally (or copy it with sudo to your system usr/lib/lv2/). If you have Qtractor 1.5.12 installed, it means you have a version of Rubberband installed that work, but maybe the installers don't like it.
I'm not sure what to recommend for installing from a repository or directly from the .deb file.
Currently, version 4 of rubberband is available in the Rui Launchpad.net PPA repositories. I have version 3 (I never update via repositories anymore... they cause me more problems than they solve). I think some Debian-based distributions aren't yet compatible with version 4, but I'm not entirely sure.
Perhaps Rui knows the solution.
Here you can find all the application and library repositories:
I'm almost certain that the missing dependency is rubberband. I'm not sure which version is compatible with both Qtractor/Samplv1 and your distribution, or where to find it.
As I mentioned before, try extracting the .deb file as if it were a zip. Two compressed files will appear; extract data.tar.zx. Now you'll see a folder usr/lib/lv2/, and that's where you'll find the plugin. Install it locally (or copy it with sudo to your system usr/lib/lv2/). If you have Qtractor 1.5.12 installed, it means you have a version of Rubberband installed that work, but maybe the installers don't like it.
I'm not sure what to recommend for installing from a repository or directly from the .deb file.
Currently, version 4 of rubberband is available in the Rui Launchpad.net PPA repositories. I have version 3 (I never update via repositories anymore... they cause me more problems than they solve). I think some Debian-based distributions aren't yet compatible with version 4, but I'm not entirely sure.
Perhaps Rui knows the solution.
Here you can find all the application and library repositories:
https://www.rncbc.org/drupal/page/repos