--- In logic-users@yahoogroups.com, Maurits van de Kamp <maurits@...> wrote: > > > On Jan 30, 2006, at 8:34 PM, rOLf peCHUkas wrote: > > > there is an ALGORITHM involved > > Yes, x=a+b I believe that you are incorrect here. It is not aquestion of just addition, at least not in floating point calculations. Please see post no. 7 on this thread: http://www.3daudioinc.com/3db/showthread.php?tY10 > Have you never wondered why .. nowhere in ANY daw can you choose a > "summing algorithm"? It's because there is only one. The link above refutes this. Also, you can choose different algorithms by using a different DAW. Tracktion has 64 bit in the box summing. Maybe there is a difference. Maybe we should have the option of 80 bit offline summing in Logic, if the Metric Halo is really so close to a real SSL as some have suggested. > > Funnily enough, Pro Tools summing has been proven to be identical to > Logic summing in the DAWSum project. > This test was made in 2001 I think, if we are looking at the same board. Logic 5 came out in the middle of that year and offered 24/96 for the first time. I can't see which version the tests are done with, but if 16 bit then yes it would be exact, but if 24 bit I think it would not. I could be wrong here as I am not a mathematician, but the link above delves into the math as does say that floating point summing is NOT just addition. C