cmt binary package in Ubuntu Focal riscv64

 Computer Music Toolkit is a collection of LADSPA compatible
 plugins that any conforming program may take advantage of.
 .
 Plugins available are: low/high pass filters, echo/feedback delay filters
 with configurable delays from 0.01 to 60 seconds, amplifies, white and
 pink noise generators, compressors, expanders, limiters, b/fmh encoders,
 drum synthesizers, lofi (low fidelity), phase modulator (phasemod) and
 many more.
 .
 These plugins are only usable in host applications, of which glame,
 sweep and others can be found in Debian.

Source package