To cite package 'soundgen' in publications, use:

A. Anikin (2018). soundgen: Parametric Voice Synthesis. R package version 1.2.0.

Corresponding BibTeX entry:

  @Manual{,
    title = {soundgen: Parametric Voice Synthesis.},
    author = {Andrey Anikin},
    year = {2018},
    note = {R package version 1.2.0},
  }