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{{From|https://help.ubuntu.com/community/Audacity}}
{{Languages|UbuntuHelp:Audacity}}
Audacity 是一个自由开源的供录制编辑音频之用的应用程序。更多信息请参照： [http://audacity.sourceforge.net/ Audacity project home page].
== 安装 Audacity ==
Ubuntu默认不安装Audacity. 
想用Audacity的话, 这样安装
<pre><nowiki>
sudo apt-get install audacity
</nowiki></pre>
更多安装软体的方法请参照[[UbuntuHelp:InstallingSoftware|InstallingSoftware]].

安装完成后，点击 ''应用程序 -> Sound & Video -> Audacity''启动Audacity。
== Audacity 和 PulseAudio ==
Ubuntu 8.04 and above install PulseAudio as the default sound server. You have to make sure they don't both grab the sound device at the same time. 
=== Use the pulse device ===
For Ubuntu 9.04 and above, there is an "ALSA: pulse" device listed in Audacity's preferences dialog. Make sure it is selected. (If there is no "ALSA: pulse", try "ALSA: default".) Now audacity records and plays back via !PulseAudio, and with this you can also use !PulseAudio's features (such as e g recording monitoring streams).
==== Intrepid (8.10) ====
In order to get the "ALSA: pulse" device as mentioned above, David Henningsson has built fixed packages; they can be installed by adding his PPA as described in https://edge.launchpad.net/~diwic/+archive. 
=== Suspend PulseAudio ===
If the above solution does not work for you, start audacity with this terminal command:
"pasuspender -- audacity"
This will temporarily pause !PulseAudio while running audacity (causing other applications to stop sound input/output). 
== Troubleshooting xruns ==
XRuns are drop-outs and/or clicks in recording or playback that are caused by your computer doing other things than handling soundcard input/output buffers. In the Audacity layer you can try to increase the latency (edit -> preferences -> recording). 
== Locating libmp3lame.so When Exporting MP3 Files ==
By default, the library libmp3lame.so is not installed in Ubuntu. Use the table below to find the name of the package you have to install depending on your Ubuntu version. (For more information on installing packages, see [[UbuntuHelp:InstallingSoftware|InstallingSoftware]].)
* Dapper (6.06), Hardy (8.04): package <code><nowiki>liblame0</nowiki></code> from the <code><nowiki>Multiverse</nowiki></code> software channel.
* Intrepid (8.10), Jaunty (9.04), Karmic (9.10): package <code><nowiki>libmp3lame0</nowiki></code> from the <code><nowiki>Multiverse</nowiki></code> software channel.
* Lucid (10.04): package <code><nowiki>liblame0</nowiki></code> from the <code><nowiki>Multiverse</nowiki></code> software channel. Please note that Lucid regains the <code><nowiki>liblame0</nowiki></code> package name. This is just a virtual package provided by the real <code><nowiki>libmp3lame0</nowiki></code> package.
You can verify Audacity finds the library going to: Edit -> Preferences... -> Libraries -> MP3 Export Library.
When Audacity asks you to locate libmp3lame.so, you will be able to locate it in <code><nowiki>/usr/lib</nowiki></code> and export MP3 files.
== Old / outdated information ==
I believe the information below is old and outdated. It could apply if you're running 7.10 or earlier.
=== Troubleshooting ===
After installation, you may receive the error message "''Error Initializing Audio''" with the explanation "''There was an error initializing the audio i/o layer. You will not be able to play or record audio. Error: Host error.''"
To start Audacity without this error, press the <code><nowiki>Alt + F2</nowiki></code> keys on your keyboard and type the following into the box which appears:
<pre><nowiki>
gksudo audacity
</nowiki></pre> 
If Audacity now starts without the error message, you can alter its menu entry with the new command by using the Alacarte Menu Editor. To start Alacarte, select ''Applications -> Accessories -> Alacarte Menu Editor''. Note that you will need to install Alarte first. See [[UbuntuHelp:InstallingSoftware|InstallingSoftware]].
If this method does not work, you can alternatively press the <code><nowiki>Alt + F2</nowiki></code> keys on your keyboard and type: 
<pre><nowiki>
aoss audacity
</nowiki></pre>
This will run Audacity through the ALSA sound wrapper, instead of Audacity's default, OSS. For more information, see [[UbuntuHelp:alsa-oss|alsa-oss]].
=== Installing the Audacity Beta Version ===
If you're running the 1.2.x version of Audacity and like to install the beta version of Audacity, see [[UbuntuHelp:InstallingAudacityBeta|InstallingAudacityBeta]].
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[[category:CategorySoftware]] [[category:CategoryAudio]]

[[category:UbuntuHelp]]