I recorded a nice set the other night and in the process of making a matrix. Anyhow, on the board tape there is plenty of cracks/pops on the vocals. Not sure of the cause, but looking for suggestions to clean it up. I played around with Audicity's low pass filter and got some improvement, but not much. I also have an older version of Wavelab (4.0) running on my old computer I could work with.