There are two wave windows in the main screen. The upper window displays the waveform of the audio file always in its full length - it is useful for knowing where you are in the file, and you can click it to quickly jump to a new area of the waveform. The lower window shows the waveform of the audio based on the zoom level. To move the lower window side to side, use the horizontal scroll bar just under the lower window. Clicking and dragging the waveform will create a selection.
Menu - Contains every action available within WavePad. To hide the menu, click the arrow button to the left of the Help icon, which is located on the right side of the toolbar.
Tabs - Organize WavePad's features onto tabs to streamline your workflow. Click a tab to see the features and tools related to that tab.
Command Bar - Contains links to the most-used features in WavePad. You can minimize sections you don't use often by clicking the heading, or close the Command Bar entirely by clicking the red X in its upper right corner. To control the Command Bar's appearance, click the View menu and then Command Bar.
A. Zoom Out - Click on this button to zoom out the lower window view of the waveform.
B. Zoom In - Click on this button to zoom in.
C. Show Entire Region - Click on this button to zoom out to display the entire file length.
D. Zoom To Selection - Click on this button to zoom to the region you have just selected.
E. Vertical Zoom - Click on this button to increase the amplitude of the display (to see softer sounds).
There is also a zoom track bar slider control between the Zoom Out and Zoom In buttons that provides infinitely variable zoom.
F. Sample Edit Mode - Allows you to modify the individual audio samples in the waveform using the computer's mouse.
G. Display + up / - down - This combines the left and right channels into one waveform.
H. Display left channel up / right channel down - Displays the left channel on the upper side of the center line and the right channel on the lower side of the center line.
I. Display channels separately - Left and right channels are displayed in separate waveforms.
J. Separate channel editing - Allows you to edit left and right channels separately.
K. Linear scale frequency spectogram - Show the frequency spectogram with a linear scale.
L. Logarithmic scale frequency spectogram - Show the frequency spectogram with a logarithmic scale.
M. Display decibel markers - Show decibel markers of the waveform.
N. Wave Selection Info - See below for more info.
Information of the selected region of the wave. Shown in the letter N of the diagram above. (Note: To select a region, you can either click on the wave window and drag to the position you want or hold down the Shift key and press the left or right arrow buttons)
Start - The start position of the selected region.
End - The end position of the selected region.
Sel Length - The length of the selected region.
File Length - The length of the entire file.
O. Sound slider - Adjust volume of playback.
P. Sound Mixer Settings - Show the Windows Sound Mixer Settings.