SoundSoap 4: New Version Adds Powerful New Cleaning Capabilities Posted 11/04/2014 at 14:26 UTC in Mac by gnye@amdesign.net | Permalink | Tweet Audio technology company, Soundness today announces SoundSoap 4, an update to their award-winning audio noise reduction software for Mac and Windows. SoundSoap solves audio noise problems like unwanted hiss and background noises, clicks, pops, crackles, electrical hum, rumble, clipping, and low volume. It works as a standalone app or as an audio software plug-in for use in popular applications. This new version of the venerable SoundSoap software adds several important new features.