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([简体中文](./README_cn.md)|English)
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# 基于SpeechX 的 ASR 部署
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## 简介
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支持 U2/U2++/Deepspeech2 模型的 C++ 部署，其在工业实践中经常被用到。
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更多 Speechx 信息可以参看[文档](../../speechx/README.md)。
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## 使用
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### 1. 环境
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* python - 3.7
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* docker - `registry.baidubce.com/paddlepaddle/paddle:2.2.2-gpu-cuda10.2-cudnn7`
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* os - Ubuntu 16.04.7 LTS
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* gcc/g++/gfortran - 8.2.0
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* cmake - 3.16.0
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更多信息可以参看[文档](../../speechx/README.md)。
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### 2. 编译 SpeechX
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更多信息可以参看[文档](../../speechx/README.md)。
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### 3. 例子
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u2++ 识别部署参看[这里](../../speechx/examples/u2pp_ol/wenetspeech/)。
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以下是在 `speechx/speechx/examples/u2pp_ol/wenetspeech`.
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- Source path.sh
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```bash
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source path.sh
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```
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- 下载模型，准备测试数据和cmvn文件
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```bash
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run.sh --stage 0 --stop_stage 1
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```
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- 解码
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```bash
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# FP32
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./local/recognizer.sh
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# INT8
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./local/recognizer_quant.sh
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```
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输出:
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```bash
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I1026 16:13:24.683531 48038 u2_recognizer_main.cc:55] utt: BAC009S0916W0495
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I1026 16:13:24.683578 48038 u2_recognizer_main.cc:56] wav dur: 4.17119 sec.
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I1026 16:13:24.683595 48038 u2_recognizer_main.cc:64] wav len (sample): 66739
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I1026 16:13:25.037652 48038 u2_recognizer_main.cc:87] Pratial result: 3 这令
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I1026 16:13:25.043697 48038 u2_recognizer_main.cc:87] Pratial result: 4 这令
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I1026 16:13:25.222124 48038 u2_recognizer_main.cc:87] Pratial result: 5 这令被贷款
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I1026 16:13:25.228385 48038 u2_recognizer_main.cc:87] Pratial result: 6 这令被贷款
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I1026 16:13:25.414669 48038 u2_recognizer_main.cc:87] Pratial result: 7 这令被贷款的员工
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I1026 16:13:25.420714 48038 u2_recognizer_main.cc:87] Pratial result: 8 这令被贷款的员工
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I1026 16:13:25.608129 48038 u2_recognizer_main.cc:87] Pratial result: 9 这令被贷款的员工们请
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I1026 16:13:25.801620 48038 u2_recognizer_main.cc:87] Pratial result: 10 这令被贷款的员工们请食难安
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I1026 16:13:25.804101 48038 feature_cache.h:44] set finished
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I1026 16:13:25.804128 48038 feature_cache.h:51] compute last feats done.
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I1026 16:13:25.948771 48038 u2_recognizer_main.cc:87] Pratial result: 11 这令被贷款的员工们请食难安
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I1026 16:13:26.246963 48038 u2_recognizer_main.cc:113] BAC009S0916W0495 这令被贷款的员工们请食难安
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```
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## 结果
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> CER 测试集为 aishell-test
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> RTF 计算包含提特征和解码
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> 测试机器： Intel(R) Xeon(R) Gold 6271C CPU @ 2.60GHz avx512_vnni
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### FP32
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```
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Overall -> 5.75 % N=104765 C=99035 S=5587 D=143 I=294
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Mandarin -> 5.75 % N=104762 C=99035 S=5584 D=143 I=294
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English -> 0.00 % N=0 C=0 S=0 D=0 I=0
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Other -> 100.00 % N=3 C=0 S=3 D=0 I=0
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```
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```
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RTF is: 0.315337
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```
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### INT8
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```
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Overall -> 5.87 % N=104765 C=98909 S=5711 D=145 I=289
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Mandarin -> 5.86 % N=104762 C=98909 S=5708 D=145 I=289
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English -> 0.00 % N=0 C=0 S=0 D=0 I=0
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Other -> 100.00 % N=3 C=0 S=3 D=0 I=0
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```
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