# Conversation Checkpoint: Local STT Implementation
## Project: local-stt
- **Status:** In-Progress (Development/Debugging)
- **Environment:** Dedicated venv in `/home/openclaw/.openclaw/workspace/projects/local-stt/scripts/`.
- **Dependencies:** `sherpa-onnx` (v1.12.34), `numpy`, `onnx`, `wave` installed.
- **Models:** 
    - STT: `sherpa-onnx-streaming-zipformer-en-2023-06-26-mobile`
    - Punctuation: `sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12-int8`
- **Current Issue:** Encountering `RuntimeError: No graph was found in the protobuf` and `RuntimeError: Got invalid dimensions for input` when attempting to run `transcribe.py`.
- **Verified:** `.onnx` model files are valid via the `onnx` library.
- **Next Steps:** Investigate version-specific loading methods for Zipformer in `sherpa-onnx` (the API changed significantly). Confirm exact model source version to ensure compatibility with current Python API.