pcm_to_wav              Convert PCM to WAV
play_audio              Play audio in a browser
set_coqui_path          Point to local coqui tts Executable File
tts                     Text-to-Speech (Speech Synthesis)
tts_auth                Authentication for Text-to-Speech (Speech
                        Synthesis) Engines
tts_bind_wav            Bind WAVs together
tts_default_voice       Default voice for text-to-speech engine
tts_speak_engine        Speak Engine for 'knitr'
tts_voices              Text-to-Speech (Speech Synthesis) Voices
