Download Audacity, Peak or Soar audio editor programs (see Resources) and install the application on your computer. If you already have an audio editor, you can skip this step.
Drag or import the audio file into your audio editing program. Audacity supports drag and drop functions, but not all audio editing programs do.
Select a few seconds of audio that are static only. You can do this by clicking on the wave file and without letting go of the left mouse button dragging to the end of the static section.
Enter the "Effect" menu and select "Noise Removal..." A dialog box will appear, select "Get Noise Profile." The dialog box will close and the file analyzed.
Open the "Noise Removal" option again. This time, select "OK." This will process the audio file and remove static.
Open "Compressor" from the "Effect" menu. Don't change any of the settings and click "OK." This will compress the audio file and help to remove some of the higher-pitched static frequency and lower rumblings.