May 2010 - chuck-users - lists.cs.princeton.edu

Scale & diatonic
by Hans Aberg 12 Oct '11

12 Oct '11

I have made a program, scale.ck, that admits one to work with scales, including tuning stretch, céleste tremulant, retune them, and then save to a file, with a line of code that can be pasted back into the source, available at next program startup. Scale tunings can be put into tuning banks, and otherwise defined by your favorite method. Details in the file. I have also updated my program for diatonic tuning systems, diatonic.ck. Just a few changes: adding some common tunings, fixing typos. The files are available here: http://www.math.su.se/~haberg/tuning_systems/ Hans

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Re: [chuck-users] bug in miniAudicle?
by Maurits Lamers 27 May '10

27 May '10

Hi, I'll try to give an example as soon as I have the time to do so :) greets Maurits > From: Kassen <signal.automatique(a)gmail.com> > Date: 25 May 2010 22:53:32 GMT+02:00 > To: ChucK Users Mailing List <chuck-users(a)lists.cs.princeton.edu> > Subject: Re: [chuck-users] bug in miniAudicle? > Reply-To: ChucK Users Mailing List <chuck- > users(a)lists.cs.princeton.edu> > > > Tom; > > > Do you have an example? I've never seen this problem. This works for > me: > > > I'm sure; as noted it "worked" like that in my little LAC workshop. > > This was running on OSX (not sure about the version) with a stock > version of the mini, freshly downloaded for the occasion. Maurits > had some Java experience so he started using block-comments on his > own. I actually assumed this must be a common/known bug on OSX, that > was just unknown to me as I don't have a OSX machine but still > suggested a bug-report as that was a nice chance to go into bug > reporting as a essential ChucKist skill. > > Yours, > Kas.

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Filters blowing up: any news?
by Tomasz Kaye's brain 25 May '10

25 May '10

At the end of November last year I posted to the list about a problem experiencing where chucks filters (lp, bpf etc) 'blow up' under certain conditions. Here's the archived post: https://lists.cs.princeton.edu/pipermail/chuck-users/2009-November/005045.h… I wondered if anyone has made any progress with finding a solution and/or figuring out exactly what was causing this. In a couple of months I'll be performing with a synthesis environment that I was part way through creating in ChucK before I ran into the filter bug. I'm hoping that I don't have to switch back to max/msp to go further (i much prefer the chuck environment), so I thought i'd give this one more bump on the list to see if there may be a fix in SCM, or otherwise in the pipeline somehow. If anyone is able to fix this I'd be extremely grateful!

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bug in miniAudicle?
by Maurits Lamers 25 May '10

25 May '10

Hi, I ran into a strange issue with miniAudicle on Mac during the ChucK workshop given by Kassen at the LAC. It turns out that the block comment is not working in the way it works on Linux. The bug seems to be that a block comment signs /* and */ need semicolons behind them to actually work. Leave them out and the Virtual Machine returns a syntax error. Is this a know problem? greets Maurits

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"switch" statements?
by Andrew C. Smith 23 May '10

23 May '10

Hey team, "switch" shows up as a keyword in the mini, but it's undocumented. Any ideas? I tried the java syntax (since ChucK seems to be like java) but can't seem to not get syntax errors. Thanks. Andrew

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Emptying two arrays with the same object causes "failed assertion `m_ref_count > 0'"
by Stefan Blixt 23 May '10

23 May '10

Here's some code: ------------------------------------- class MyThing { int x; } // Two identical arrays, typewise MyThing arga[0]; MyThing argb[0]; // Create an instance MyThing thing; 5 => thing.x; // Push it into arga arga << thing; // Push it into argb argb << thing; <<< "n=", arga[0].x >>>; <<< "n=", argb[0].x >>>; // clear arga 0 => arga.size; // clear argb - crash! 0 => argb.size; ------------------------------------- when I run it I get: ------------------------------------- $ chuck test. ck n= 5 n= 5 chuck_oo.cpp:120: failed assertion `m_ref_count > 0' Abort trap ------------------------------------- It seems that that 0 => arga.size decrements a reference count for thing, causing it to be freed, and then when the same thing is attempted for argb, it crashes. Possibly some reference increment missing when doing argb << thing ? /Stefan -- Release me, insect, or I will destroy the Cosmos!

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reading stereo file with WvIn
by Atte André Jensen 22 May '10

22 May '10

Hi I'm trying to do something with WvIn. As SndBuf WvIn seems to be mono, however the old trick of using to SndBuf's each with different (0/1 IIRC) chucked to channel, doesn't seem to work with WvIn. Any ideas? -- Atte http://atte.dk http://modlys.dk

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Flush ChucK IO
by Tom Aizenberg 21 May '10

21 May '10

Hi All, I am trying to make a visualization program for ChucK programs. For the communication between ChucK and the C++ code I'm writing, I use a pipe. I'd rather use a socket but I cannot see how this works in ChucK (?). When I write to chout I need to flush the buffer, just to read in the output using my own program. When I try to do this (i.e. my_IO_object.flush()) I get the following message: "(IO): internal error! inside an abstract function! help! note: please hunt down someone (e.g., Ge) to fix this..." The command I use is: chuck-1.2.1.3-exe\bin\chuck.exe chuckVis\chuckFiles\random1.ck, on Windows Vista 32-bits. Without the .flush() the script works fine, but I need the flush functionality. Has anybody got a clue how to fix this? Or maybe how to use ChucK to send messages through a socket? Greetings, Tom Aizenberg

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PItShift and SndBuff .rate = Scrubbing?
by Brutus Gates 21 May '10

21 May '10

Hi, Sorry I didn't see the obvious... But I still wanted to know if I'm on the right track: I would use: # .rate - ( float , READ/WRITE ) - set/get playback rate ( relative to file's natural speed ) To "get" the playback rate (I'm guessing it some kind of ratio???) I would then use that info to pitch shift the sound file using PitShift. Am I on the right track? B.

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LOrknet and recent PLOrk doc
by Daniel Trueman 20 May '10

20 May '10

hi everyone, a couple links for y'all: 1. Mark Cerqueira's recent research with wireless networking and laptop orchestras: http://lorknet.cs.princeton.edu/ 2. audio/video doc of the recent April 3 Princeton Laptop Orchestra performance: http://www.music.princeton.edu/~nbritt/PLOrk-Spring2010/ yep! dt

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