If the full duration of a pop cannot be removed then increasing the SENSITIVITY will help. The SENSITIVITY allows fine-tuning in determining whether a piece of audio is detected as a pop.
The SOFT knob is a secondary function and allows control over the duration of the de-pop process, where increasing the value will repair pops of longer duration. Higher settings of the THRESHOLD may cause distortion. It may be that with some material, the lowest setting is all that is necessary. Then, whilst the programme material is passing, the THRESHOLD is moved up until the pops are no longer discernable. The THRESHOLD slider is the primary control for the de-pop process and should be taken to the bottom of its travel as a starting point. The SOFT and SENSITIVITY knobs default to a 50% setting which is a good starting point. (The CLICKS IN button should normally be left turned off until pops are have been delt with.) Work should start with the the the POPS IN button selected along with the large rectangular IN button, which allows insertion and audition of the full DECLICK process. The POPS IN button allows insertion and audition of the pop removal process. But also to provide the more experienced operator with enough control in order to optimise results, exactly to his or her requirements. The aim of the Oxford Restoration Tools is to provide quick, high quality restoration with little intervention. Even severely damaged copies of recordings, which would otherwise be unlistenable, can be salvaged. Recordings with moderate damage can be restored with no trace of the disturbances left. The Oxford Restoration Tools plug-in is a collection of three applications designed to improve the sound of digital audio recordings which are impaired by clicks, noise and buzz.