BIAS Sound Soap (Windows/Macintosh) Just use the easy user interface to reduce or remove unwanted hiss, room noise, rumble, electrical hum, and other background noise -- all you do is spin two little baby knobs Intelligent design enables the software to learn the difference between noise and desired audio Easily remove the common electrical buzzing background noise that occurs in digital audio, with the twist of a knob Export your newly cleaned-up sound to any Flash file, Powerpoint display or any computer file or folder Create the professional-quality audio you want for your home production with Sound Soap!