Restoration VPI's  -  DeNoiser

DeNoiser is a broadband, single-ended noise reduction VPI that is optimized for real-time tape-hiss removal.

While program is playing, the noise floor is constantly analyzed. A large filter set is automatically created and shaped to the noise estimate contour. The filters' various properties (threshold, slopes, etc.) are dynamically changed in real-time as the noise floor is tracked. A specific "noise signature" is not required - DeNoiser can differentiate between program and noise components. Attenuation of broadband noise can be as much as 20 dB. The overall filter-set threshold "Offset" can be manually defined. A clever "look-ahead" mechanism can manipulate the release time and attenuation of filters in specific frequency ranges to minimize the loss of ambience or room tone.