| --- |
| license: apache-2.0 |
| language: |
| - zh |
| base_model: |
| - csukuangfj/WSChuan-ASR |
| pipeline_tag: automatic-speech-recognition |
| tags: |
| - sherpa-onnx |
| - axera |
| - ax650 |
| - axmodel |
| - paraformer |
| - asr |
| - speech-recognition |
| - chinese |
| - pulsar2 |
| --- |
| |
| # sherpa-onnx-paraformer-ax650 |
|
|
| Paraformer-large-Chuan Chinese ASR model converted to AX650 AXMODEL for on-device inference via sherpa-onnx. |
|
|
| ## Model Details |
|
|
| - **Original Model**: [csukuangfj/WSChuan-ASR](https://hf-mirror.com/csukuangfj/WSChuan-ASR) |
| - **Architecture**: Paraformer (SAN-M encoder + CIF predictor + SAN-M decoder) |
| - **Task**: Chinese speech recognition (ASR) |
| - **Sample rate**: 16000 Hz |
| - **Input**: 5-second fixed length audio chunks |
| - **Vocabulary**: 8404 tokens |
| - **LFR**: window=7, shift=6 |
| - **Target Chip**: AX650 (NPU3) |
|
|
| ## Files |
|
|
| | File | Precision | Size | Description | |
| |------|-----------|------|-------------| |
| | `encoder-5-seconds.axmodel` | INT8 | 165 MB | Encoder [1,83,560]→[1,83,512] | |
| | `predictor-5-seconds.axmodel` | INT8 | 831 KB | Predictor [1,83,512]→[1,83] | |
| | `decoder-5-seconds.axmodel` | INT8 | 60 MB | Decoder [1,83,512]×3→[1,83,8404] | |
|
|
| ## Performance |
|
|
| | Metric | Value | |
| |--------|-------| |
| | RTF | 0.007 | |
| | Pulsar2 Version | 6.0 (commit 48520c11) | |
|
|
| ## Usage with sherpa-onnx |
|
|
| ```bash |
| ./sherpa-onnx-offline \ |
| --tokens=tokens.txt \ |
| --paraformer=encoder-5-seconds.axmodel,predictor-5-seconds.axmodel,decoder-5-seconds.axmodel \ |
| --provider=axera \ |
| audio.wav |
| ``` |
|
|
| ## Known Limitations |
|
|
| - INT8 quantization may cause accuracy loss; recognition output may be empty or partially missing |
| - Fixed 5-second input length; longer audio requires external chunking |
| - For higher accuracy, use U16 encoder + FP32 predictor + FP32 decoder variants |
|
|
| ## Conversion Details |
|
|
| - **Pulsar2 Version**: 6.0 (48520c11) |
| - **Calibration**: MinMax with 10 samples |
| - **Quantization**: INT8 |
|
|
| ## License |
|
|
| Apache 2.0 |
|
|
