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PiperTTS-DE: High-quality text-to-speech for German

PiperTTS is a high-quality multi-lingual text-to-speech library.

This is based on the implementation of PiperTTS-DE found here. This repository contains scripts for optimized on-device export suitable to run on Qualcomm® devices. More details on model performance across various devices, can be found here.

Qualcomm AI Hub Models uses Qualcomm AI Hub Workbench to compile, profile, and evaluate this model. Sign up to run these models on a hosted Qualcomm® device.

Quick Start

Use our lightweight command-line interface to inspect and download PiperTTS-DE:

pip install qai_hub_models_cli # (the CLI is also available with the qai-hub-models package)

# Inspect the model and list the available download options
qai-hub-models info PiperTTS-DE

# Print performance and accuracy metrics
qai-hub-models perf PiperTTS-DE
qai-hub-models numerics PiperTTS-DE

# Download a ready-to-deploy asset
qai-hub-models fetch PiperTTS-DE --runtime voice_ai --precision float

See the CLI README for the full list of commands and filters.

Setup

1. Install System-Level Dependencies

Linux

sudo apt install libportaudio2

2. Install the package

Install the package via pip:

# NOTE: 3.10 <= PYTHON_VERSION < 3.12 is supported.
pip install git+https://github.com/rhasspy/piper.git#subdirectory=src/python --no-deps
pip install "qai-hub-models[pipertts-de]"

3. Configure Qualcomm® AI Hub Workbench

Sign-in to Qualcomm® AI Hub Workbench with your Qualcomm® ID. Once signed in navigate to Account -> Settings -> API Token.

With this API token, you can configure your client to run models on the cloud hosted devices.

qai-hub configure --api_token API_TOKEN

Navigate to docs for more information.

Run CLI Demo

Run the following simple CLI demo to verify the model is working end to end:

python -m qai_hub_models.models.pipertts_de.demo

More details on the CLI tool can be found with the --help option. See demo.py for sample usage of the model including pre/post processing scripts. Please refer to our general instructions on using models for more usage instructions.

Export for on-device deployment

To run the model on Qualcomm® devices, you must export the model for use with an edge runtime such as TensorFlow Lite, ONNX Runtime, or Qualcomm AI Engine Direct. Use the following command to export the model:

qai-hub-models export pipertts_de --target-runtime voice_ai --precision float --device "Samsung Galaxy S25 (Family)"

Additional options are documented with the --help option.

License

  • The license for the original implementation of PiperTTS-DE can be found here.

References

Community