Speaking issues Coqui TTS Tacotron2 DDC model

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General[edit | edit source]

Most models are trained with a dot, exclamation or question mark at the end. So always end a sentence to avoid model synthesizing weird output.

  • TTS model: tts_models/en/ljspeech/tacotron2-DDC
  • Vocoder model: vocoder_models/en/ljspeech/hifigan_v2

Input string formatting[edit | edit source]

Phrases ending in "ah"[edit | edit source]

"ah" at end of sentence generally produces strange results. Short names produce a 12 second clip.


  • Nelson Mandela
  • pergola

Mitigation[edit | edit source]

If at the end of the input, adding punctuation to the end synthesizes correctly:

Example "Nelson Mandela" > "Nelson Mandela."

Acronyms[edit | edit source]

To speak acronyms as letters it needs to be formatted as:

"A. B. C. news"


"ABC news" "A.B.C. news"

Mispronounced Words[edit | edit source]

  • video