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Originally Posted by frans Time aligned looks good, but peak heaped on peak...pfwrrr...you either loose headroom or the overall signal gets too low. (by the way, how do you time align, say, 2mm if you have a too low sampling rate - calculate the length a single sample delay on the DAW has with your sample frequency!)
Phase align, well...let's say you have your ORTF on and then bring the spot mic on the kettledrum up, slowly. Maybe you are hearing a "smear" in a certain range of the fade - hit the phase button. If the kettledrum sounds more solid with the phasebutton in, your spot mic is out of phase with the ORTF. This could happen, it depends on mic placement and the room. Nothing new, so far.
Instead of explaining everything with nearfield/diffuse/room theories/facts ...just move the spotmic a little and try again - if you hear phasetrouble in the low bass prepare for moving it more than a little. In extreme cases, I would move the kettledrum alltogether. Imagine a whole sea of waves, just like in the ocean - you don't want your spot mic to be in a place where the water ebbs away every time it rises in the ORTF. At exactly which place in time the spot mic is doesn't matter (milliseconds-wise!) as long as it is in the "flow". What could be irritating is, if you hear the spot mic before the orchestra, so hit your delay in case...but again watch out for the ebb and flow. More mics, more trouble.... |
True, but phase is rarely absolute, therefore in-phase at one particular frequency is going to be out at other frequencies hence the comb filtering effect.
Obviously "less is best", but often balance issues may outweight this being the best overall solution. I for one follow the philosophy that if it sounds good it is good.
Regards to all
Roland
