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translate done: 20170804 Add speech to your Fedora system.md
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translating by lujun9972
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Add speech to your Fedora system
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======
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By default, Fedora Workstation ships a small package called espeak. It adds a speech synthesizer -- that is, text-to-speech software.
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In today's world, talking devices are nothing impressive as they're very common. You can find speech synthesizers even in your smartphone, a product like Amazon Alexa, or in the announcements at the train station. In addition, synthesized voices are nowadays more or less similar to human speech. We live in a 1980s science fiction movie!
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The voice produced by espeak may sound a bit primitive compared to the aforementioned tools. But at the end of the day espeak produces good quality speech. And whether you find it useful or not, at least it can provide some amusement.
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### Running espeak
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In espeak you can set various parameters using command line options. Examples include:
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* amplitude (-a)
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* pitch adjustment (-p)
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* speed of sentences (-s)
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* gap between words (-g)
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Each of these options produces various effects and may help you achieve a cleaner voice.
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You can also select different voice variants with command line options. For example, try -ven+m3 for a different English male voice, and -ven+f1 for a female one. You can also use different languages. For a list, run this command:
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```
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espeak --voices
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```
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Note that many languages other than English are experimental attempts.
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To create a WAV file instead of actually speaking something, use the -w option:
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```
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espeak -w out.wav "Audio file test"
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```
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The espeak utility also reads the content of a file for you.
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```
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espeak -f plaintextfile
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```
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Or you can pass the text to speech from the standard input. In this way, as a simple example, you can build a talking box that alerts you to an event using a voice. Your backup is completed? Add this command to the end of your script:
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```
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echo "Backup completed" | espeak -s 160 -a 100 -g 4
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```
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Suppose an error shows up in a log file:
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```
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tail -1F /your/log/file | grep --line-buffered 'ERROR' | espeak
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```
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Or perhaps you want a speaking clock telling you every minute what time it is:
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```
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while true; do date +%S | grep '00' && date +%H:%M | espeak; sleep 1; done
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```
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As you can guess, use cases are limited only by your imagination. Enjoy your new talking Fedora system!
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--------------------------------------------------------------------------------
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via: https://fedoramagazine.org/add-speech-fedora-system/
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作者：[Author Archive][a]
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译者：[lujun9972](https://github.com/lujun9972)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:http://alciregi.id.fedoraproject.org/
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translated/tech/20170804 Add speech to your Fedora system.md
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为你的 Fedora 系统增添发音功能
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======
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Fedora 工作站默认带有一个小软件，叫做 espeak。它是一个声音合成器 -- 也就是转换文本为声音的软件。
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在当今这个世界，发音设备以及非常普遍了。在智能电话，Amazon Alexa，甚至火车站的公告栏中都有声音合成器。而且，现在合成声音已经跟人类的声音很类似了。我们生活在 80bandaid 的科幻电影里！
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与前面提到的这些工具相比，espeak 的发音听起来有一点原始。但最终 espeak 可以产生不错的发音效果。而且不管你觉得它有没有用，至少它可以给你带来一些乐趣。
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### 运行 espeak
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你可以在命令行为 espek 设置各种参数。包括：
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* 振幅 (-a)
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* 音高调整 (-p)
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* 读句子的速度 (-s)
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* 单词间的停顿时间 (-g)
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每个选项都能产生不同的效果，你可以通过调整它们来让发音更加清晰。
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你也可以通过命令行选项来选择不同的变音。比如，`-ven+m3` 表示另一种英式男音，而 `-ven+f1` 表示英式女音。你也可以尝试其他语言的发音。运行下面命令可以查看支持的语言列表：
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```
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espeak --voices
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```
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要注意，很多非英语的语言发音现在还处于实验阶段。
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若要创建 相应的 WAV 发音而不是真的讲出来，则可以使用 `-w` 选项：
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```
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espeak -w out.wav "Audio file test"
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```
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espeak 还能读出文件的内容。
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```
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espeak -f plaintextfile
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```
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你也可以通过标准输入传递要发音的文本。举个简单的例子，通过这种方式，你可以创建一个发音盒子，当事件发生时使用声音通知你。你的备份完成了？将下面命令添加到脚本的最后试试效果：
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```
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echo "Backup completed" | espeak -s 160 -a 100 -g 4
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```
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加入有日志文件中出现错误了：
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```
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tail -1F /your/log/file | grep --line-buffered 'ERROR' | espeak
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```
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或者你也可以创建一个报时钟表，每分钟报一次时：
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```
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while true; do date +%S | grep '00' && date +%H：%M | espeak; sleep 1; done
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```
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你会发现，espeak 的使用场景仅仅受你的想象所限制。享受你这会发音的 Fedora 系统吧！
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--------------------------------------------------------------------------------
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via: https://fedoramagazine.org/add-speech-fedora-system/
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作者：[Author Archive][a]
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译者：[lujun9972](https://github.com/lujun9972)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:http://alciregi.id.fedoraproject.org/
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