Restoration VPI's  -  DeCrackler

DeCrackler has been optimized to remove up to 8000 disturbances per second. The latest adaptive algorithms have been employed, significantly simplifying user operation.

With the latest version of the DeCrackler a user can switch between four different detection algorithms, facilitating an even better adaptation to click problems. In addition to the existing 'Standard' mode there is a variant called 'Complex' which has a more sophisticated analysis model. In Complex mode, disturbances can be separated from the desired signal more accurately and they can be removed without any artifacts.

There are two new 'specialty' algorithms as well. The first is 'Voice/ Brass', which facilitates the removal of clicks from signals with "voice or brass like" program. The second is 'Noise Bursts', an algorithm that removes longer lasting disturbances having smaller amplitudes. These lower level noise bursts are heard only after a first pass decrackling process for older recordings like shellac. This new algorithm simplifies noise burst removal.

Once an algorithm is set, there are only two parameters required for manual operator control. The 'Threshold' control sets the level at which the DeCrackler begins to operate. The 'Reduction' parameter sets the amount of removed disturbances. An intuitive display monitors the real-time progress of the DeCrackler, displaying the number of disturbances removed at various click durations. An 'Audition' mode allows the operator to listen to the removed disturbances in real-time - even while parameters are adjusted.