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