Studio Clean 1.5

Studio Clean is a DirectX and VST compatible plug-in suite that can be use in host applications such as audio editing or processing software. It consists of four plug-ins for noise reduction and quality enhancements:

StudioDenoiser is a plug-in for broadband noise reduction. Because the algorithm takes the perceptual properties of the human hearing into account it achieves a high level of noise reduction with a minimum of artifacts.
StudioDeclicker contains two different algorithms. The actual click filter eliminates larger clicks and pops in the recording, while the crackle filter eliminates very frequent, but short clicks.
StudioDeclipper restores recordings that suffer from analog or digital clipping.
StudioRebirth adds synthesized high frequency harmonics to give life to old and dull sounding recordings.