July 2012 - chuck-users - lists.cs.princeton.edu

Ramping Sine and other Inputs
by Perry Cook 13 Jul '12

13 Jul '12

> Jordan Orelli <jordanorelli(a)gmail.com> Wrote: > there's no way to use this to ramp an arbitrary variable, > like the frequency of a SinOsc, for example, is there? > Cause I do stuff like this and find it kinda annoying: Hey Jordan, Not for any arbitrary UG, but for SineOsc, Phasor, and some others, there is a .sync() method that instructs them to look at anything ChucKed to their input as a frequency. Here's a silly example with SinOsc: SinOsc s => dac; 0 => s.sync; Step blah => Envelope freq => s; 1.0 => blah.next; 0.5 :: second => freq.duration; 1 => freq.keyOn; while (1) { Std.rand2f(0.1,1.0) :: second => now; Std.rand2f(100.0,1000.0) => freq.target; }

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working with strings
by Atte André Jensen 12 Jul '12

12 Jul '12

Hi Is it possible to split a string into an array of chars? Or work with parts of strings in other ways? src/util_string.h mentions these string related functions: std::string itoa( t_CKINT val ); std::string ftoa( t_CKFLOAT val, t_CKUINT precision ); std::string tolower( const std::string & val ); std::string toupper( const std::string & val ); std::string trim( const std::string & val ); std::string ltrim( const std::string & val ); std::string rtrim( const std::string & val ); I couldn't find some of them (like ltrim) in the manual, although they were mentioned in examples. Shouldn't they be mentioned in the manual? -- Atte http://atte.dk http://modlys.dk

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Getting the status of running shreds *into* chuck
by Atte André Jensen 09 Jul '12

09 Jul '12

Hi I'm working on my chuck live setup again, and have a question I'm fairly sure I asked a (long) while ago: Is it possible to get the status of the VM inside a piece of chuck code? Machine.status() does the same as chuck --status, which is printing the info I need, but unfortunately to a terminal outside of chuck. The thing is, I'm sporking a lot of files from my code, and I need to keep track of which of them are still running at certain points... If this is not directly possible, does anyone have an idea for a hack? If anything else fails I think I might roll up my sleeves and hack in the chuck source, but that the last resort, since I'm not really speaking C++ that fluently... -- Atte http://atte.dk http://modlys.dk

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J. S. Bach. Prelude in C major
by Antanas Budriūnas 08 Jul '12

08 Jul '12

Hi, as an excercise I coded a well known piece. Maybe it would fit into ChucKing_Scores section of the Wiki page. Feel free to comment, criticize etc. Antanas

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CPU performance and Jack
by Matt Bard 07 Jul '12

07 Jul '12

Hello all, So, I'm doing a bit of heavier crunching and was wondering what aspects of CPU performance are the most critical the JACK's DSP percentage? I've not been able to find a very clear answer and was wondering if this group might know? Does running the dual core version of JACK make more sense with a slightly slower processor, or is speed the real winner in this case? To clarify, I'm basically just heavily crunching incoming audio. Thanks for any insight! -Matt

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