On Mon, Jul 20, 2009 at 10:50 -0700, francibal wrote: > > Hi Mr. Alexander, > i've tryed your examples and work well. I'm on vista with csound 5.10, but i > don't believe this is important in this case. Are you sure that was same > seed value ? Hello, francibal. Yes, I am sure. I change the seed to 1061022902 and csound used 1061022912. I can't explain why. And not only in this case; any time I set the seed to a prefered value, csound uses a value that differs and thus produces a different trajectory. Thanks for your answer Best Regards Alexandros