MIO TTS V1 is an experimental German Piper TTS voice created and trained by Maurice Hartmann.
This release is the first publicly usable milestone of an ongoing scratch-training run.
Current training state
Architecture: Piper / VITS
Quality preset: High
Language: German
Training method: Scratch training
Batch size: 24
Maximum phoneme IDs: 500
Checkpoint: epoch=489-step=278320
Completed epochs: 490
Export format: ONNX
Sample rate: 22050 Hz
Status: Work in progress
Training is continuing. Later releases are expected to improve pronunciation, prosody, stability, and long-sentence handling.
Intended use
fast local text-to-speech
assistant and agent communication
offline voice output
experimentation with Piper
German-language TTS applications
This version is already considered practically usable for fast communication, but it is not the final trained model.
Files
mio_tts_v1.onnx
mio_tts_v1.onnx.json
mio_tts_v1_demo.wav
Example usage
echo "Guten Morgen. Dies ist MIO TTS Version eins." | piper --model mio_tts_v1.onnx --output_file output.wav
Training dataset
MIO TTS V1 is based directly on the publicly available synthetic German training dataset:
Muckylixx/german-sohee-synthetic-tts-24k
This dataset was created and published by Maurice Hartmann specifically for the development of German TTS voices.
It contains approximately 19.5 hours of German synthetic speech and represents the complete training foundation used for this first MIO TTS release.
By publishing both the dataset and the resulting model, the project aims to make the development process transparent and reproducible.
Future MIO TTS releases will continue to build on this training material and may include improved preprocessing, additional data, and later training checkpoints.
Community and feedback
MIO TTS is an active community-oriented project and is still under development.
Feedback, test results, pronunciation reports, technical suggestions, and ideas for future improvements are very welcome.
Especially useful feedback includes pronunciation errors, unusual pauses, long-sentence problems, Piper integration experiences, comparisons with other German voices, and suggestions for later releases.
Comments, discussions, and constructive criticism are explicitly encouraged. Community feedback may directly influence later versions of MIO TTS.
Please feel welcome to use the Hugging Face Community section of this model repository.
Limitations
This is an early training milestone. Possible remaining limitations include inconsistent prosody, pronunciation errors, unusual pauses, instability on very long text, and artifacts in uncommon words or abbreviations.
