DC Offset Removal
The DC Offset Removal plug-in removes DC offset from your audio files. The term "DC offset" describes a specific type of audio artifact that might appear in digital audio signals.
The DC Offset plug-in can be identified in a waveform overview because it appears to have a near-vertical fade-in with a constant or "steady-state" offset from zero when the file is actually "silent" (it contains no audible audio). The DC Offset plug-in can help remove (or at least reduce) the DC offset from your source audio files.