靜音、複製並貼上、分離

將不要的部分靜音
此項操作會將選取範圍的振幅抹平. 可以說是將選取範圍，但這段時間不刪除. 與比較的話，音訊的一秒鐘，你會將這秒鐘刪除；但如果是的話，只是這秒鐘變為無聲.

When silencing parts between vocal lines, please keep in mind that a sudden drop in background ambiance can have an bad effect, so at the very least fade the area around the silenced part, to minimize that effect. Rules to start with are, fade in quickly and fade out slowly.

Alternately, use the envelope tool to lower the volume in that area. That way, you can comfortably change it later.

快速鍵：

複製並貼上
此項操作會將選取範圍複製一份，產生一個新音軌，然後將複製的選取範圍貼上至新音軌相同的時間位置.

以下是複製並貼上的圖例：

http://audacity.sourceforge.net/manual-1.2/images/duplicate.png

複製並貼上的好處有很多，其中之一就是拿來實驗效果器的套用效果.

Some of you may say "I can do that with the original track too". But you can't change the volume of your effect and original audio separately. If you put some Reverb on to your audio, you can only lower that processed audio in volume later on. If you duplicate the audio first and use the reverb on that(with 100% reverb and 0% original signal), you can freely change the volume for both the original and reverb signal.

Also, you can do weird and wonderful things to your duplicates to create special effects. You'll have two pieces of the same audio to work with. Silence parts, reverb another, phase a third, filter another and see how that sounds. It is so easy to duplicate a piece of audio and do weird things to it, so try it. Combining sounds produces magic.

A special note on performance : The new piece of audio isn't actually copied on the hard disk. Audacity will still play from the original audio file(s) until you change a piece of it.

快速鍵：

分離
此項操作與很像，但會將原本的選取範圍靜音，然後選取範圍會貼上至新音軌. 以下一樣是圖例：

http://audacity.sourceforge.net/manual-1.2/images/split.png

有很多很好用的用法，在下一節會有更多介紹.

快速鍵：