Global Ducking: Reduce the volume of musicbots when someone talks.
Channel Ducking: Reduce the volume of home or foreing tabs when someone talks on the other one or you receive a whisper.
It is recommended to install the plugin directly from within the client, so that it gets automatically updated. In you TeamSpeak client, go to Tools->Options->Addons->Browse, search for the "Ducker" plugin and install.
After cloning, you'll have to manually initialize the submodules:
git submodule update --init --recursive
Qt in the minor version of the client is required, e.g.
mkdir build32 & pushd build32
cmake -G "Visual Studio 16 2019" -A Win32 -DCMAKE_PREFIX_PATH="path_to/Qt/5.12.3/msvc2017" ..
popd
mkdir build64 & pushd build64
cmake -G "Visual Studio 16 2019" -A x64 -DCMAKE_PREFIX_PATH="path_to/Qt/5.12.3/msvc2017_64" ..