From 8ad580cc38cc8d4fe3a1e18205b8f094ff90f2e4 Mon Sep 17 00:00:00 2001 From: geekpi Date: Wed, 30 May 2018 08:42:23 +0800 Subject: [PATCH] translated --- ...ck tip- quickly remove background noise.md | 55 ------------------- ...ck tip- quickly remove background noise.md | 53 ++++++++++++++++++ 2 files changed, 53 insertions(+), 55 deletions(-) delete mode 100644 sources/tech/20180521 Audacity quick tip- quickly remove background noise.md create mode 100644 translated/tech/20180521 Audacity quick tip- quickly remove background noise.md diff --git a/sources/tech/20180521 Audacity quick tip- quickly remove background noise.md b/sources/tech/20180521 Audacity quick tip- quickly remove background noise.md deleted file mode 100644 index c4943ba7ba..0000000000 --- a/sources/tech/20180521 Audacity quick tip- quickly remove background noise.md +++ /dev/null @@ -1,55 +0,0 @@ -translating---geekpi - -Audacity quick tip: quickly remove background noise -====== - -![](https://fedoramagazine.org/wp-content/uploads/2018/03/audacity-noise-816x345.png) -When recording sounds on a laptop — say for a simple first screencast — many users typically use the built-in microphone. However, these small microphones also capture a lot of background noise. In this quick tip, learn how to use [Audacity][1] in Fedora to quickly remove the background noise from audio files. - -### Installing Audacity - -Audacity is an application in Fedora for mixing, cutting, and editing audio files. It supports a wide range of formats out of the box on Fedora — including MP3 and OGG. Install Audacity from the Software application. - -![][2] - -If the terminal is more your speed, use the command: -``` -sudo dnf install audacity - -``` - -### Import your Audio, sample background noise - -After installing Audacity, open the application, and import your sound using the **File > Import** menu item. This example uses a [sound bite from freesound.org][3] to which noise was added: - -Next, take a sample of the background noise to be filtered out. With the tracks imported, select an area of the track that contains only the background noise. Then choose **Effect > Noise Reduction** from the menu, and press the **Get Noise Profile** button. - -![][4] - -### Filter the Noise - -Next, select the area of the track you want to filter the noise from. Do this either by selecting with the mouse, or **Ctrl + a** to select the entire track. Finally, open the **Effect > Noise Reduction** dialog again, and click OK to apply the filter. - -![][5] - -Additionally, play around with the settings until your tracks sound better. Here is the original file again, followed by the noise reduced track for comparison (using the default settings): - -https://ryanlerch.fedorapeople.org/sidebyside.ogg?_=2 - --------------------------------------------------------------------------------- - -via: https://fedoramagazine.org/audacity-quick-tip-quickly-remove-background-noise/ - -作者：[Ryan Lerch][a] -选题：[lujun9972](https://github.com/lujun9972) -译者：[译者ID](https://github.com/译者ID) -校对：[校对者ID](https://github.com/校对者ID) - -本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出 - -[a]: https://fedoramagazine.org/introducing-flatpak/ -[1]:https://www.audacityteam.org/ -[2]:https://fedoramagazine.org/wp-content/uploads/2018/03/audacity-software.jpg -[3]:https://freesound.org/people/levinj/sounds/8323/ -[4]:https://fedoramagazine.org/wp-content/uploads/2018/03/select-noise-profile.gif -[5]:https://fedoramagazine.org/wp-content/uploads/2018/03/apply-filter.gif diff --git a/translated/tech/20180521 Audacity quick tip- quickly remove background noise.md b/translated/tech/20180521 Audacity quick tip- quickly remove background noise.md new file mode 100644 index 0000000000..0765199582 --- /dev/null +++ b/translated/tech/20180521 Audacity quick tip- quickly remove background noise.md @@ -0,0 +1,53 @@ +Audacity 快速指南：快速消除背景噪音 +====== + +![](https://fedoramagazine.org/wp-content/uploads/2018/03/audacity-noise-816x345.png) +当在笔记本电脑上录制声音时 - 比如首次简单地录屏 - 许多用户通常使用内置麦克风。但是，这些小型麦克风也会捕获很多背景噪音。在这个快速指南中，我们会学习如何使用 Fedora 中的 [Audacity][1] 快速移除音频文件中的背景噪音。 + +### 安装 Audacity + +Audacity 是 Fedora 中用于混合、剪切和编辑音频文件的程序。在 Fedora 上它支持各种开箱即用的格式 - 包括 MP3 和 OGG。从软件中心安装 Audacity。 + +![][2] + +如果你更喜欢终端，请使用以下命令： +``` +sudo dnf install audacity + +``` + +### 导入您的音频、样本背景噪音 + +安装 Audacity 后，打开程序，使用 **File > Import** 菜单项导入你的声音。这个例子使用了一个[来自 freesound.org 添加了噪音的声音][3]： + +接下来，采样要滤除的背景噪音。导入音轨后，选择仅包含背景噪音的音轨区域。然后从菜单中选择 **Effect > Noise Reduction**，然后按下 **Get Noise Profile** 按钮。 + +![][4] + +### 过滤噪音 + +接下来，选择你要过滤噪音的音轨区域。通过使用鼠标进行选择，或者按 **Ctrl + a** 来选择整个音轨。最后，再次打开 **Effect > Noise Reduction** 对话框，然后单击确定以应用滤镜。 + +![][5] + +此外，调整设置，直到你的音轨听起来更好。这里是原始文件，接下来是用于比较的降噪音轨（使用默认设置）： + +https://ryanlerch.fedorapeople.org/sidebyside.ogg?_=2 + +-------------------------------------------------------------------------------- + +via: https://fedoramagazine.org/audacity-quick-tip-quickly-remove-background-noise/ + +作者：[Ryan Lerch][a] +选题：[lujun9972](https://github.com/lujun9972) +译者：[geekpi](https://github.com/geekpi) +校对：[校对者ID](https://github.com/校对者ID) + +本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出 + +[a]: https://fedoramagazine.org/introducing-flatpak/ +[1]:https://www.audacityteam.org/ +[2]:https://fedoramagazine.org/wp-content/uploads/2018/03/audacity-software.jpg +[3]:https://freesound.org/people/levinj/sounds/8323/ +[4]:https://fedoramagazine.org/wp-content/uploads/2018/03/select-noise-profile.gif +[5]:https://fedoramagazine.org/wp-content/uploads/2018/03/apply-filter.gif