我们平常看到很多文件都是PDF格式,网上的各类书籍多为此格式。有时候不方便阅读,或者怕费眼睛伤颈椎,那么有没有一种方法可以把它变为音频,这样上下班路上也就可以听一听。
这里做个科普,什么是TTS?TTS(Text To Speech,文本转语音)是语音合成应用的一种,它将储存于电脑中的文件,如帮助文件或者网页,转换成自然语音输出。edge-tts就是将微软的语音合成技术,他是将edge浏览器里提供的tts打包成Python第三方包,这样就可以免费调用微软的语音合成技术。
将PDF转为音频MP3文件,需要两步。第一步,将pdf转为txt文本;第二步,将txt转为音频。所以我们需要以下两个库。
1. 安装pdfplumber包,用于将pdf转为txt
(base) C:\Users\Administrator>pip install pdfplumber
Collecting pdfplumber
Downloading pdfplumber-0.9.0-py3-none-any.whl (46 kB)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 46.1/46.1 kB 385.4 kB/s eta 0:00:00
Collecting pdfminer.six==20221105
Downloading pdfminer.six-20221105-py3-none-any.whl (5.6 MB)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 5.6/5.6 MB 8.1 MB/s eta 0:00:00
Collecting Wand>=0.6.10
Downloading Wand-0.6.11-py2.py3-none-any.whl (143 kB)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 143.6/143.6 kB ? eta 0:00:00
Requirement already satisfied: Pillow>=9.1 in d:\programdata\anaconda3\lib\site-packages (from pdfplumber) (9.4.0)
Requirement already satisfied: charset-normalizer>=2.0.0 in d:\programdata\anaconda3\lib\site-packages (from pdfminer.six==20221105->pdfplumber) (2.0.4)
Requirement already satisfied: cryptography>=36.0.0 in d:\programdata\anaconda3\lib\site-packages (from pdfminer.six==20221105->pdfplumber) (39.0.1)
Requirement already satisfied: cffi>=1.12 in d:\programdata\anaconda3\lib\site-packages (from cryptography>=36.0.0->pdfminer.six==20221105->pdfplumber) (1.15.1)
Requirement already satisfied: pycparser in d:\programdata\anaconda3\lib\site-packages (from cffi>=1.12->cryptography>=36.0.0->pdfminer.six==20221105->pdfplumber) (2.21)
Installing collected packages: Wand, pdfminer.six, pdfplumber
Successfully installed Wand-0.6.11 pdfminer.six-20221105 pdfplumber-0.9.0
2. 安装edge-tts包,用于将txt转为音频
(base) C:\Users\Administrator>pip install edge-tts
Collecting edge-tts
Downloading edge_tts-6.1.5-py3-none-any.whl (27 kB)
Requirement already satisfied: aiohttp>=3.8.0 in d:\programdata\anaconda3\lib\site-packages (from edge-tts) (3.8.4)
Requirement already satisfied: yarl=1.0 in d:\programdata\anaconda3\lib\site-packages (from aiohttp>=3.8.0->edge-tts) (1.8.2)
Requirement already satisfied: multidict=4.5 in d:\programdata\anaconda3\lib\site-packages (from aiohttp>=3.8.0->edge-tts) (6.0.4)
Requirement already satisfied: frozenlist>=1.1.1 in d:\programdata\anaconda3\lib\site-packages (from aiohttp>=3.8.0->edge-tts) (1.3.3)
Requirement already satisfied: attrs>=17.3.0 in d:\programdata\anaconda3\lib\site-packages (from aiohttp>=3.8.0->edge-tts) (22.1.0)
Requirement already satisfied: async-timeout=4.0.0a3 in d:\programdata\anaconda3\lib\site-packages (from aiohttp>=3.8.0->edge-tts) (4.0.2)
Requirement already satisfied: aiosignal>=1.1.2 in d:\programdata\anaconda3\lib\site-packages (from aiohttp>=3.8.0->edge-tts) (1.3.1)
Requirement already satisfied: charset-normalizer=2.0 in d:\programdata\anaconda3\lib\site-packages (from aiohttp>=3.8.0->edge-tts) (2.0.4)
Requirement already satisfied: idna>=2.0 in d:\programdata\anaconda3\lib\site-packages (from yarl=1.0->aiohttp>=3.8.0->edge-tts) (3.4)
Installing collected packages: edge-tts
Successfully installed edge-tts-6.1.5
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很快就搞定啦,见下图。以后再想听PDF就把上面代码跑起来!
在以上程序中修改以下代码if条件为1,即可查看可用播音角色。
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运行后结果为一个list,通过json格式化后,如下所示。变更播音员只需要使用Name值替换前面announcer值即可。是不是很简单?
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查看所有播音角色,执行命令:>edge-tts --list-voices
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