Vocoder source code CLI version
Git repository with source code of the basic command line interface (CLI) version.
https://git.gnuher.de/settel/vocoder-cliVocoder LV2 version
LV2 is the audio plugin interface for Linux audio applications. The LV2 version of vocoder comes pre-packaged with Debian and Ubuntu distributions.
https://packages.debian.org/de/sid/lv2vocoderVocoder LADSPA version
The LADSPA audio plugin interface is the predecessor of LV2. Some Linux audio application still use LADSPA. The LADSPA version is available as part of the SWH plugin collection that comes with Debian and Ubuntu. It's also part of Linux Multimedia Studio (LMMS).
vocoder-ladspa-0.4.tgzhttps://packages.debian.org/de/sid/swh-plugins
https://packages.debian.org/de/sid/lmms
Vocoder source code JACK version
JACK is another linux audio plugin interface. Here's the source code of the FLTK-based desktop version of vocoder that connects via JACK.
vocoder-jack-0.29.tar.gz