sherpa-onnx-tts

You can generate speech locally without cloud services by using an offline text-to-speech wrapper that invokes a native runtime to synthesize plain text into WAV audio files, ensuring data privacy and low latency.

Yes, offline text-to-speech supports batch audio generation across macOS, Linux, and Windows. The cross-platform runtime utilizes environment variable configuration and downloadable model artifacts to produce WAV output locally.

Yes, you need a compatible voice model to synthesize WAV audio. The local runtime requires environment variables or command-line flags pointing to both the native runtime and the specific model directories to function correctly.

The best way to build a local assistant with offline speech synthesis is to run a Node.js CLI wrapper that configures library paths and invokes a native offline binary, generating private WAV audio output without sending data to cloud services.

Your local TTS wrapper fails to locate the native runtime if environment variables or command-line flags are not correctly set to point to the installed runtime and model directories, preventing the offline binary from executing.