Re: [chuck-users] Non-random random number
Apparently, the non-random bug does not happen after declaration of all STK instruments, just some of them: BlowBotl, BlowHole, Clarinet, Flute, Saxofony, StifKarp, VoicForm And the problem occurs with both Std.rand2 and Std.rand2f (I haven't conducted any more tests yet to see under what other conditions it might happen.) david
Forgive me if this was already discussed on the list before. I am puzzled about a non-random random number. When the random number is calculated right after an STK instrument is declared, the result is not random. It is the same number every time. However, if the same code occurs without an STK declaration before it, the result is random.
while (true) { StifKarp stu => dac; int randy; Std.rand2(0,10) => randy; <<<"here are three random numbers", Std.rand2(0,10), Std.rand2(0,10),Std.rand2(0,10), "and NON-random Randy", randy >>>;
Std.rand2(0,10) => randy; <<<"here are three more random numbers", Std.rand2(0,10), Std.rand2(0,10),Std.rand2(0,10), "and random Randy", randy >>>; 1000::ms => now; }
david
David Loberg Code School of Music Western Michigan University 1903 W Michigan Ave Kalamazoo, MI 49008-5434 code at wmich.edu
Does it do it with Math.random too?
-Jeff
--
Jeffrey Albert, Ph.D.
Assistant Professor of Music Industry Technology
Loyola University New Orleans
College of Music and Fine Arts
6363 St. Charles Ave.
Campus Box 8
New Orleans, LA 70118
Office: Communications/Music Complex 428P
Office Phone: (504) 865-2606
Voice & Text: (504) 315-5167
jvalbert@loyno.edu
http://www.loyno.edu/~jvalbert
On Oct 9, 2013, at 4:40 PM, David Code
Apparently, the non-random bug does not happen after declaration of all STK instruments, just some of them: BlowBotl, BlowHole, Clarinet, Flute, Saxofony, StifKarp, VoicForm
And the problem occurs with both Std.rand2 and Std.rand2f (I haven't conducted any more tests yet to see under what other conditions it might happen.)
david
Forgive me if this was already discussed on the list before. I am puzzled about a non-random random number. When the random number is calculated right after an STK instrument is declared, the result is not random. It is the same number every time. However, if the same code occurs without an STK declaration before it, the result is random.
while (true) { StifKarp stu => dac; int randy; Std.rand2(0,10) => randy; <<<"here are three random numbers", Std.rand2(0,10), Std.rand2(0,10),Std.rand2(0,10), "and NON-random Randy", randy >>>;
Std.rand2(0,10) => randy; <<<"here are three more random numbers", Std.rand2(0,10), Std.rand2(0,10),Std.rand2(0,10), "and random Randy", randy >>>; 1000::ms => now; }
david
David Loberg Code School of Music Western Michigan University 1903 W Michigan Ave Kalamazoo, MI 49008-5434 code at wmich.edu
_______________________________________________ chuck-users mailing list chuck-users@lists.cs.princeton.edu https://lists.cs.princeton.edu/mailman/listinfo/chuck-users
Upon a quick check it appears that Math.random is fine. I guess I just need to retro-fit my older ChucK files. david
Does it do it with Math.random too?
-Jeff
-- Jeffrey Albert, Ph.D. Assistant Professor of Music Industry Technology Loyola University New Orleans College of Music and Fine Arts 6363 St. Charles Ave. Campus Box 8 New Orleans, LA 70118
Office: Communications/Music Complex 428P Office Phone: (504) 865-2606 Voice & Text: (504) 315-5167 jvalbert at loyno.edu http://www.loyno.edu/~jvalbert
On Oct 9, 2013, at 4:40 PM, David Code
wrote: Apparently, the non-random bug does not happen after declaration of all STK instruments, just some of them: BlowBotl, BlowHole, Clarinet, Flute, Saxofony, StifKarp, VoicForm
And the problem occurs with both Std.rand2 and Std.rand2f (I haven't conducted any more tests yet to see under what other conditions it might happen.)
david
On Oct 9, 2013, at 5:40 PM, David Code wrote:
Apparently, the non-random bug does not happen after declaration of all STK instruments, just some of them: BlowBotl, BlowHole, Clarinet, Flute, Saxofony, StifKarp, VoicForm
And the problem occurs with both Std.rand2 and Std.rand2f (I haven't conducted any more tests yet to see under what other conditions it might happen.)
david
Forgive me if this was already discussed on the list before. I am puzzled about a non-random random number. When the random number is calculated right after an STK instrument is declared, the result is not random. It is the same number every time. However, if the same code occurs without an STK declaration before it, the result is random.
while (true) { StifKarp stu => dac; int randy; Std.rand2(0,10) => randy; <<<"here are three random numbers", Std.rand2(0,10), Std.rand2(0,10),Std.rand2(0,10), "and NON-random Randy", randy >>>;
Std.rand2(0,10) => randy; <<<"here are three more random numbers", Std.rand2(0,10), Std.rand2(0,10),Std.rand2(0,10), "and random Randy", randy >>>; 1000::ms => now; }
david
David Loberg Code School of Music Western Michigan University 1903 W Michigan Ave Kalamazoo, MI 49008-5434 code at wmich.edu
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Jeffrey Albert