I use an audio interface to send my sounds in cubase to a pod, wah wah, distortion or EQ (hardware) so I use varying cable lengths depending on what I do so when I put it back in with the dry, it sounds out of phase, moving the wet forward by 4 milliseconds seems to be working nicely but I want to be precise as on some things I don't want any phasing like drums. So how do I know how long the delay is from the sound going out to when it comes back in?