# RunOnBoard Report

- board: AX650N_CHIP（Engine 2.12.0s, Compiler 7.0 6b1bcdf8）
- model: model.axmodel (NPU3, triple core)

## Python SDK (gcrn_sdk, axengine backend)
- input: test_audio/mix.wav (16 kHz mono, 9.77s, 156302 samples)
- output: enhanced_board.wav
- elapsed: 0.280s  audio: 9.769s  RTF: 0.0287
- board-vs-host ONNX enhanced waveform cosine: 0.999674, MAE 0.001599
- import gcrn_sdk: OK; model input/output [1,2,401,161] float32

## C++ SDK (gcrn_example, cross-compiled aarch64 + BSP)
- fixed: AX_SYS_Init before AX_ENGINE_Init; WAV 16-bit read/write; [c,t,f] row-major layout; braced-init vector size
- output: enhanced_cpp.wav (156302 samples)
- cpp-vs-python board waveform cosine: 0.999997, MAE 0.000063
- runtime: ~28s (direct DFT 320-point pre/post in C++, no FFT lib on board)

## 结论
- Python/C++ 双 SDK 在 AX650 板端跑通，输出一致，端到端音频质量与 ONNX 参考几乎一致。