As I have as of yet not had time to read how to create a Fedora Doc, I am posting this here for the benefit of anyone interested in trying Waveform 11.5 on Fedora 33. While I did not have any success with installing the .rpm package created from the official .deb package with alien, the following process works:
$ ar xv waveform_64bit_vX.X.X.deb $ sudo tar xvf data.tar.xz -C / $ sudo dnf install libatomic
The tracktion-download-manager package can be installed using the above method.
For deleting the manually installed Waveform, to upgrade to a newer version:
$ sudo rm -f /usr/bin/Waveform11 /usr/share/applications/waveform11.desktop /usr/share/doc/waveform11/* /usr/share/doc/waveform11 /usr/share/mime/packages/waveform11.xml /usr/share/pixmaps/waveform11.png
For deleting the manually installed tracktion-download-manager, to upgrade to a newer version, should this ever be necessary:
$ sudo rm -f /usr/bin/tracktion-download-manager /usr/share/applications/tracktion-download-manager.desktop /usr/share/doc/tracktion-download-manager/* /usr/share/doc/tracktion-download-manager /usr/share/pixmaps/tracktion-download-manager.png