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EditingAudio

Last modified at 8/23/2012 12:45 PM by Manasse,Dalyns

Editing Audio

Depending on what needs to be done, Audacity has a myriad of tools for almost every possible problem you will encounter. The most basic and often most used tools are explained below. Tips on making your audio louder and removing background noise can be found here as well.

 

Basic Editing Toolbar

Image:Tools.jpg

 

A. Cut

As shown below, left click and drag over the portion you wish to delete, and either click the Cut icon or press the Delete key on your keyboard to remove the selected portion.

Image:Cut.jpg


B. and C. Copy/Paste

As shown below, left click and drag over the portion you wish to copy, click the Copy icon, select where you wish to place the copied selection, and then click Paste.

Image:Copy.jpg


D. Trim outside selection

As shown below, left click and drag over the portion you wish to keep, and click the Trim outside selection icon in order to delete the rest.

Image:Trim outside.jpg


E. Silence selection

As shown below, left click and drag over the portion you wish to silence and click the Silence selection icon. However, I do not recommend this as it creates a unnatural silence with no noise whatsoever. You may find it easier to just Cut out the part that does not fit.

Image:Silence.jpg


F. Undo

This will undo the last editing operation you performed to your project. Audacity supports full unlimited undo - meaning you can undo every editing operation back to when you opened the window.


G. Redo

This will redo any editing operations that were just undone. After you perform a new editing operation, you can no longer redo the operations that were undone.

H. Zoom In

Zooms in on the current track you have selected.

I. Zoom Out

Zooms out of the current track you have selected.

J. Fit selection in window

As shown below, left click and drag over the portion you wish to zoom in on, and click the Fit selection in window icon to magnify your selected portion.

Image:Fitselect.jpg

 

K. Fit project in window

As shown below, simply click the Fit project in window icon to magnify your audio track to the full project window.

Image:Fitwindow.jpg



Amplifying Volume
Amplify allows you to either reduce the volume of a certain portion of audio, or increase it.In order to do so, first left click and drag over the portion you would like to amplify (or press CTRL + A to select the entire track).

Then, go to Effect > Amplify and the window as shown below will appear. If the Amplification (db) is greater than zero, the volume will be increased, if it is less than zero, the volume will be decreased.You may also drag the center bar in order to increase or decrease the volume.

Click Preview to test the volume of the selected portion. When you are finished testing, click OK.

Image:Amplify3.jpg



Removing Background Noise
Noise removal allows you to clean up noise from a recording. It works best when the audio signal is much louder than the background noise. First, select a small piece of audio that is silent except for the background noise.

Then, go to Effect > Noise Removal and click on the "Get Noise Profile" button as shown below.

Image:Noise1.jpg


Next, select all of the audio you want filtered, go toEffect > Noise Removal. The window below will then appear. You can experiment with the slider to try to remove more or less noise, some audio distorsion may happen as a result.

Click Preview to test the volume of the selected portion. When you are finished testing, click Remove Noise.

Image:Noise2.jpg



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