> Compare the frequences of coincidents and calculate the difference, and finally present the resulting data in terms of bbs. > > Does this sound do-able ? I know very little about electronics or computer programming but I have watched EDTs evolve from useless to useful. Frequency counters take several seconds to a few minutes to get a reliable sample to display. The lower the frequency the higher the display time. Modern EDTs display the _difference_ in _phase_ between the internal 'standard' to the incoming, highly filtered, signal. Filtering is an electronic or programming system to exclude other frequencies to time shorten and enhance display. A program could be set up to compare the phases of two incoming 'signals' but the human would have to tell the program which partials to compare. If you want to compare fifths or fourths you will have to wait an amount of time that would make the measurements almost meaningless. Yes, it could be done but I don't want to wait for 50 to 75 seconds for a fourth to display or 15 to 20 seconds for a third to display. So, OK, you have a number. THis number is useless unless you have an adequate number of other samples for comparison. What are you going to do with the numbers. Beats represent the difference between to frequencies and if you change one all the other beats in all the other related intervals change as well. You are talking about a massive amount of information that is difficult to acquire and not as informative as you might think because EDTs think in terms of cents and beats represent frequencies. The two are NOT linearly linked. Steve Fairchild has worked out a spread sheet to do just what you suggest but peering at several columns of numbers representing 'theoretical' number are, in my view, useless in a practical sense. I think you would find yourself mired in numbers the confuse and a time investment that is of no value to you except as an intellectual exercise. Get in touch with Steve Fairchild if you want to find out what he has done. Jim Colemen, Sr. is far more familiar with the of Steve than am I. IM not so HO. (Opinions are like are pits, everyone has them and most are unpleasant.) Newton
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