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(简体中文|[English](./README.md))
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# 流式语音合成服务
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## 介绍
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这个demo是一个启动流式语音合成服务和访问该服务的实现。 它可以通过使用`paddlespeech_server` 和 `paddlespeech_client`的单个命令或 python 的几行代码来实现。
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## 使用方法
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### 1. 安装
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请看 [安装文档](https://github.com/PaddlePaddle/PaddleSpeech/blob/develop/docs/source/install.md).
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推荐使用 **paddlepaddle 2.2.2** 或以上版本。
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你可以从 medium,hard 两种方式中选择一种方式安装 PaddleSpeech。
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### 2. 准备配置文件
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配置文件可参见 `conf/tts_online_application.yaml` 。
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- `protocol` 表示该流式 TTS 服务使用的网络协议,目前支持 **http 和 websocket** 两种。
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- `engine_list` 表示即将启动的服务将会包含的语音引擎,格式为 <语音任务>_<引擎类型>。
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- 该 demo 主要介绍流式语音合成服务,因此语音任务应设置为 tts。
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- 目前引擎类型支持两种形式:**online** 表示使用python进行动态图推理的引擎;**online-onnx** 表示使用 onnxruntime 进行推理的引擎。其中,online-onnx 的推理速度更快。
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- 流式 TTS 引擎的 AM 模型支持:**fastspeech2 以及fastspeech2_cnndecoder**; Voc 模型支持:**hifigan, mb_melgan**
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- 流式 am 推理中,每次会对一个 chunk 的数据进行推理以达到流式的效果。其中 `am_block` 表示 chunk 中的有效帧数,`am_pad` 表示一个 chunk 中 am_block 前后各加的帧数。am_pad 的存在用于消除流式推理产生的误差,避免由流式推理对合成音频质量的影响。
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- fastspeech2 不支持流式 am 推理,因此 am_pad 与 m_block 对它无效
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- fastspeech2_cnndecoder 支持流式推理,当 am_pad=12 时,流式推理合成音频与非流式合成音频一致
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- 流式 voc 推理中,每次会对一个 chunk 的数据进行推理以达到流式的效果。其中 `voc_block` 表示chunk中的有效帧数,`voc_pad` 表示一个 chunk 中 voc_block 前后各加的帧数。voc_pad 的存在用于消除流式推理产生的误差,避免由流式推理对合成音频质量的影响。
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- hifigan, mb_melgan 均支持流式 voc 推理
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- 当 voc 模型为 mb_melgan,当 voc_pad=14 时,流式推理合成音频与非流式合成音频一致;voc_pad 最小可以设置为7,合成音频听感上没有异常,若 voc_pad 小于7,合成音频听感上存在异常。
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- 当 voc 模型为 hifigan,当 voc_pad=20 时,流式推理合成音频与非流式合成音频一致;当 voc_pad=14 时,合成音频听感上没有异常。
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- 推理速度:mb_melgan > hifigan; 音频质量:mb_melgan < hifigan
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- **注意:** 如果在容器里可正常启动服务,但客户端访问 ip 不可达,可尝试将配置文件中 `host` 地址换成本地 ip 地址。
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### 3. 使用http协议的流式语音合成服务端及客户端使用方法
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#### 3.1 服务端使用方法
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- 命令行 (推荐使用)
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启动服务(配置文件默认使用http):
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```bash
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paddlespeech_server start --config_file ./conf/tts_online_application.yaml
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```
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使用方法:
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```bash
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paddlespeech_server start --help
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```
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参数:
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- `config_file`: 服务的配置文件,默认: ./conf/tts_online_application.yaml
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- `log_file`: log 文件. 默认:./log/paddlespeech.log
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输出:
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```bash
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[2022-04-24 20:05:27,887] [ INFO] - The first response time of the 0 warm up: 1.0123658180236816 s
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[2022-04-24 20:05:28,038] [ INFO] - The first response time of the 1 warm up: 0.15108466148376465 s
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[2022-04-24 20:05:28,191] [ INFO] - The first response time of the 2 warm up: 0.15317344665527344 s
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[2022-04-24 20:05:28,192] [ INFO] - **********************************************************************
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INFO: Started server process [14638]
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[2022-04-24 20:05:28] [INFO] [server.py:75] Started server process [14638]
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INFO: Waiting for application startup.
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[2022-04-24 20:05:28] [INFO] [on.py:45] Waiting for application startup.
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INFO: Application startup complete.
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[2022-04-24 20:05:28] [INFO] [on.py:59] Application startup complete.
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INFO: Uvicorn running on http://127.0.0.1:8092 (Press CTRL+C to quit)
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[2022-04-24 20:05:28] [INFO] [server.py:211] Uvicorn running on http://127.0.0.1:8092 (Press CTRL+C to quit)
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```
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- Python API
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```python
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from paddlespeech.server.bin.paddlespeech_server import ServerExecutor
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server_executor = ServerExecutor()
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server_executor(
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config_file="./conf/tts_online_application.yaml",
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log_file="./log/paddlespeech.log")
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```
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输出:
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```bash
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[2022-04-24 21:00:16,934] [ INFO] - The first response time of the 0 warm up: 1.268730878829956 s
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[2022-04-24 21:00:17,046] [ INFO] - The first response time of the 1 warm up: 0.11168622970581055 s
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[2022-04-24 21:00:17,151] [ INFO] - The first response time of the 2 warm up: 0.10413002967834473 s
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[2022-04-24 21:00:17,151] [ INFO] - **********************************************************************
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INFO: Started server process [320]
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[2022-04-24 21:00:17] [INFO] [server.py:75] Started server process [320]
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INFO: Waiting for application startup.
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[2022-04-24 21:00:17] [INFO] [on.py:45] Waiting for application startup.
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INFO: Application startup complete.
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[2022-04-24 21:00:17] [INFO] [on.py:59] Application startup complete.
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INFO: Uvicorn running on http://127.0.0.1:8092 (Press CTRL+C to quit)
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[2022-04-24 21:00:17] [INFO] [server.py:211] Uvicorn running on http://127.0.0.1:8092 (Press CTRL+C to quit)
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```
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#### 3.2 客户端使用方法
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- 命令行 (推荐使用)
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访问 http 流式TTS服务:
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```bash
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paddlespeech_client tts_online --server_ip 127.0.0.1 --port 8092 --protocol http --input "您好,欢迎使用百度飞桨语音合成服务。" --output output.wav
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```
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使用帮助:
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```bash
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paddlespeech_client tts_online --help
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```
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参数:
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- `server_ip`: 服务端ip地址,默认: 127.0.0.1。
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- `port`: 服务端口,默认: 8092。
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- `protocol`: 服务协议,可选 [http, websocket], 默认: http。
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- `input`: (必须输入): 待合成的文本。
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- `spk_id`: 说话人 id,用于多说话人语音合成,默认值: 0。
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- `speed`: 音频速度,该值应设置在 0 到 3 之间。 默认值:1.0
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- `volume`: 音频音量,该值应设置在 0 到 3 之间。 默认值: 1.0
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- `sample_rate`: 采样率,可选 [0, 8000, 16000],默认值:0,表示与模型采样率相同
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- `output`: 输出音频的路径, 默认值:None,表示不保存音频到本地。
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- `play`: 是否播放音频,边合成边播放, 默认值:False,表示不播放。**播放音频需要依赖pyaudio库**。
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- `spk_id, speed, volume, sample_rate` 在流式语音合成服务中暂时不生效。
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输出:
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```bash
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[2022-04-24 21:08:18,559] [ INFO] - tts http client start
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[2022-04-24 21:08:21,702] [ INFO] - 句子:您好,欢迎使用百度飞桨语音合成服务。
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[2022-04-24 21:08:21,703] [ INFO] - 首包响应:0.18863153457641602 s
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[2022-04-24 21:08:21,704] [ INFO] - 尾包响应:3.1427218914031982 s
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[2022-04-24 21:08:21,704] [ INFO] - 音频时长:3.825 s
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[2022-04-24 21:08:21,704] [ INFO] - RTF: 0.8216266382753459
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[2022-04-24 21:08:21,739] [ INFO] - 音频保存至:output.wav
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```
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- Python API
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```python
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from paddlespeech.server.bin.paddlespeech_client import TTSOnlineClientExecutor
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import json
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executor = TTSOnlineClientExecutor()
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executor(
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input="您好,欢迎使用百度飞桨语音合成服务。",
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server_ip="127.0.0.1",
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port=8092,
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protocol="http",
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spk_id=0,
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speed=1.0,
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volume=1.0,
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sample_rate=0,
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output="./output.wav",
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play=False)
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```
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输出:
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```bash
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[2022-04-24 21:11:13,798] [ INFO] - tts http client start
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[2022-04-24 21:11:16,800] [ INFO] - 句子:您好,欢迎使用百度飞桨语音合成服务。
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[2022-04-24 21:11:16,801] [ INFO] - 首包响应:0.18234872817993164 s
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[2022-04-24 21:11:16,801] [ INFO] - 尾包响应:3.0013909339904785 s
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[2022-04-24 21:11:16,802] [ INFO] - 音频时长:3.825 s
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[2022-04-24 21:11:16,802] [ INFO] - RTF: 0.7846773683635238
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[2022-04-24 21:11:16,837] [ INFO] - 音频保存至:./output.wav
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```
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### 4. 使用websocket协议的流式语音合成服务端及客户端使用方法
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#### 4.1 服务端使用方法
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- 命令行 (推荐使用)
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首先修改配置文件 `conf/tts_online_application.yaml`, **将 `protocol` 设置为 `websocket`**。
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启动服务:
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```bash
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paddlespeech_server start --config_file ./conf/tts_online_application.yaml
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```
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使用方法:
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```bash
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paddlespeech_server start --help
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```
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参数:
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- `config_file`: 服务的配置文件,默认: ./conf/tts_online_application.yaml
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- `log_file`: log 文件. 默认:./log/paddlespeech.log
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输出:
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```bash
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[2022-04-27 10:18:09,107] [ INFO] - The first response time of the 0 warm up: 1.1551103591918945 s
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[2022-04-27 10:18:09,219] [ INFO] - The first response time of the 1 warm up: 0.11204338073730469 s
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[2022-04-27 10:18:09,324] [ INFO] - The first response time of the 2 warm up: 0.1051797866821289 s
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[2022-04-27 10:18:09,325] [ INFO] - **********************************************************************
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INFO: Started server process [17600]
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[2022-04-27 10:18:09] [INFO] [server.py:75] Started server process [17600]
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INFO: Waiting for application startup.
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[2022-04-27 10:18:09] [INFO] [on.py:45] Waiting for application startup.
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INFO: Application startup complete.
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[2022-04-27 10:18:09] [INFO] [on.py:59] Application startup complete.
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INFO: Uvicorn running on http://127.0.0.1:8092 (Press CTRL+C to quit)
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[2022-04-27 10:18:09] [INFO] [server.py:211] Uvicorn running on http://127.0.0.1:8092 (Press CTRL+C to quit)
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```
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- Python API
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```python
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from paddlespeech.server.bin.paddlespeech_server import ServerExecutor
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server_executor = ServerExecutor()
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server_executor(
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config_file="./conf/tts_online_application.yaml",
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log_file="./log/paddlespeech.log")
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```
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输出:
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```bash
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[2022-04-27 10:20:16,660] [ INFO] - The first response time of the 0 warm up: 1.0945196151733398 s
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[2022-04-27 10:20:16,773] [ INFO] - The first response time of the 1 warm up: 0.11222052574157715 s
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[2022-04-27 10:20:16,878] [ INFO] - The first response time of the 2 warm up: 0.10494542121887207 s
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[2022-04-27 10:20:16,878] [ INFO] - **********************************************************************
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INFO: Started server process [23466]
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[2022-04-27 10:20:16] [INFO] [server.py:75] Started server process [23466]
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INFO: Waiting for application startup.
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[2022-04-27 10:20:16] [INFO] [on.py:45] Waiting for application startup.
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INFO: Application startup complete.
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[2022-04-27 10:20:16] [INFO] [on.py:59] Application startup complete.
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INFO: Uvicorn running on http://127.0.0.1:8092 (Press CTRL+C to quit)
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[2022-04-27 10:20:16] [INFO] [server.py:211] Uvicorn running on http://127.0.0.1:8092 (Press CTRL+C to quit)
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```
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#### 4.2 客户端使用方法
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- 命令行 (推荐使用)
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访问 websocket 流式TTS服务:
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```bash
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paddlespeech_client tts_online --server_ip 127.0.0.1 --port 8092 --protocol websocket --input "您好,欢迎使用百度飞桨语音合成服务。" --output output.wav
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```
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使用帮助:
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```bash
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paddlespeech_client tts_online --help
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```
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参数:
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- `server_ip`: 服务端ip地址,默认: 127.0.0.1。
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- `port`: 服务端口,默认: 8092。
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- `protocol`: 服务协议,可选 [http, websocket], 默认: http。
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- `input`: (必须输入): 待合成的文本。
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- `spk_id`: 说话人 id,用于多说话人语音合成,默认值: 0。
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- `speed`: 音频速度,该值应设置在 0 到 3 之间。 默认值:1.0
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- `volume`: 音频音量,该值应设置在 0 到 3 之间。 默认值: 1.0
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- `sample_rate`: 采样率,可选 [0, 8000, 16000],默认值:0,表示与模型采样率相同
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- `output`: 输出音频的路径, 默认值:None,表示不保存音频到本地。
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- `play`: 是否播放音频,边合成边播放, 默认值:False,表示不播放。**播放音频需要依赖pyaudio库**。
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- `spk_id, speed, volume, sample_rate` 在流式语音合成服务中暂时不生效。
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输出:
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```bash
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[2022-04-27 10:21:04,262] [ INFO] - tts websocket client start
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[2022-04-27 10:21:04,496] [ INFO] - 句子:您好,欢迎使用百度飞桨语音合成服务。
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[2022-04-27 10:21:04,496] [ INFO] - 首包响应:0.2124948501586914 s
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[2022-04-27 10:21:07,483] [ INFO] - 尾包响应:3.199106454849243 s
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[2022-04-27 10:21:07,484] [ INFO] - 音频时长:3.825 s
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[2022-04-27 10:21:07,484] [ INFO] - RTF: 0.8363677006141812
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[2022-04-27 10:21:07,516] [ INFO] - 音频保存至:output.wav
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```
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- Python API
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```python
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from paddlespeech.server.bin.paddlespeech_client import TTSOnlineClientExecutor
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import json
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executor = TTSOnlineClientExecutor()
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executor(
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input="您好,欢迎使用百度飞桨语音合成服务。",
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server_ip="127.0.0.1",
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port=8092,
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protocol="websocket",
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spk_id=0,
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speed=1.0,
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volume=1.0,
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sample_rate=0,
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output="./output.wav",
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play=False)
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```
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输出:
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```bash
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[2022-04-27 10:22:48,852] [ INFO] - tts websocket client start
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[2022-04-27 10:22:49,080] [ INFO] - 句子:您好,欢迎使用百度飞桨语音合成服务。
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[2022-04-27 10:22:49,080] [ INFO] - 首包响应:0.21017956733703613 s
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[2022-04-27 10:22:52,100] [ INFO] - 尾包响应:3.2304444313049316 s
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[2022-04-27 10:22:52,101] [ INFO] - 音频时长:3.825 s
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[2022-04-27 10:22:52,101] [ INFO] - RTF: 0.8445606356352762
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[2022-04-27 10:22:52,134] [ INFO] - 音频保存至:./output.wav
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```
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