October 2013 - chuck-users - lists.cs.princeton.edu

Non-random random number
by David Loberg Code 09 Oct '13

09 Oct '13

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(a)wmich.edu

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minor bug when saving an example with "save as"
by Steve Morris 08 Oct '13

08 Oct '13

Hi. I'm new to ChucK and love it but I would like to report what I think is a minor bug. I'm on a Mac running OSX 10.8.5. miniAudicle "about" reports: version 1.3.0 (gidora) Copyright (c) Spencer Salazar ChucK: version 1.3.2.0 (chimera) 64-bit Copyright (c) Ge Wang and Perry Cook http://chuck.cs.princeton.edu/ Bug report: Note: this is clearly low priority and minor, more in the category of an annoyance. I opened an example then saved it with "save as." Then I edited it then tried to save the changes. A dialog reported the file was read only. I checked the file with info and the file has Read & Write permission. I can overwrite it with "Save As" but Save refuses to save. I suspect that the example was read only and it kept that attribute in some file state variable. If true this is wrong in two ways, first it should have updated the local state to match what it wrote and second it should not depend on historical information. Even if the file was read-only when opened that may have changed. This is a multitasking system and some other task (me in finder for example) might have changed the permissions since the file was opened. I believe the correct behavior would have been to attempt to write the file and check the error status of the write. Best regards and thanks for a wonderful tool. -Steve Morris aka zencuke

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Wah-Wah "pedal"
by Perry Cook 08 Oct '13

08 Oct '13

Hey all, There was some recent discussion over on the STK users list, about implementing a Wah-Wah pedal. I hacked together a simple one based on experiments and data that Julius O. Smith did using his own personal CryBaby Pedal. For more on that: > https://ccrma.stanford.edu/realsimple/faust_strings/faust_strings.pdf Here's my quick version in ChucK, using just his three data points, interpolating between. Enjoy!! I'm going to hook it up to a MIDI pedal shortly.

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WvOut2 bit depths
by Dan Trueman 06 Oct '13

06 Oct '13

hey, i'm wanting to use WvOut2 to write 24bit or higher sound files, but am not finding a way to do it, though the documentation says it is possible. well, it seems to write Matlab files to high bit depths, so if anyone knows how to convert those to wav or air, that would also get me where i need to be. any ideas? thanks! dan

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1.3.2.0 (chimera) released
by Spencer Salazar 05 Oct '13

05 Oct '13

Howdy, chuck 1.3.2.0 + miniAudicle 1.3.0 have been released: http://chuck.stanford.edu/release/ Our first release in a year is an exciting one. In anticipation of a number of ChucK-based computer music education initiatives (the forthcoming book "Programming for Musicians and Digital Artists" and Coursera course of the same name), we have added a number of conspicuously absent features and libraries, alongside cleaning up a large number of The most significant change is to formally release chuck as an installer package on Mac OS X and Windows platforms. These installer packages include chuck, miniAudicle, related example files, and the standard set of chugins. (Separate installation of these components is possible but discouraged and not necessarily supported.) Linux, for the time being, is still released as separate source distributions. SerialIO will allow ChucK programmers to easily interact with serial-based hardware devices such as Arduino. A number of string processing utilities have been added. Furthermore, the clear.vm command will enable more dynamic on-the-fly development with public classes. In miniAudicle, the underlying application core on Windows/Linux has been completely rewritten in Qt, greatly improving stability and overall experience. A number of other features and improvements have been added. Special thanks to Ajay Kapur, Kassen, Mark Morris, Bruce Lott, Fernando Lopez-Lezcano, and Romain Michon. Best regards, Spencer, Ge, and the ChucK team. chuck 1.3.2.0 --- - (added) --clear.vm flag instructs remote VM to remove all shreds and clear public user types - (added) Std.ftoi(float f) Function for converting float to int - (added) ASCII char literals - 'c' converted to int with ASCII value - (added) book/digital-artists example programs for forthcoming book: "Programming for Musicians and Digital Artists" (Manning Publications) (very special thanks to Mark Morris and Bruce Lott for sample production) - (added) new functions - me.path() equivalent to me.sourcePath() - me.dir() equivalent to me.sourceDir() - me.dir(int N) return Nth-level parent of source directory - Shred.fromId(int id) return Shred object corresponding to specified id - (added) new functions for string objects - .charAt(int index) return character of string at index - .setCharAt(int index, int ch) set character of string at index to ch - .substring(int pos) return new string with characters from pos to end of string - .substring(int pos, int len) return new string with characters from pos of length len - .insert(int pos, string str) insert str at pos - .erase(int pos, int len) remove len characters from string, beginning at pos - .replace(int pos, string str) replace characters of string at pos with str - .replace(int pos, int len, string str) replace len characters of string with str, starting at pos - .find(int ch) search for character ch in string, return index of first instance - .find(int ch, int pos) search for character ch in string, return index of first instance at or after index pos - .find(string str) search for string str in string, return index of first instance - .find(string str, int pos) search for string str in string, return index of first instance at or after index pos - .rfind(int ch) search for character ch in string, return index of last instance - .rfind(int ch, int pos) search for character ch in string, return index of last instance at or before index pos - .rfind(string str) search for string str in string, return index of last instance - .rfind(string str, int pos) search for string str in string, return index of last instance at or before index pos - (added) MidiFileIn class Class for parsing + handling MIDI input from a file. See examples/midi/playmidi.ck for example usage. - .open(string filename) Open file at specified path - .read(MidiMsg inMsg) Get next message in first track - .read(MidiMsg inMsg, int trackNo) Get next message in trackNo - (added) SerialIO class (extends IO) Class for communicating with serial devices, e.g Arduino. See examples/serial/ for example usage. - .list() (static) return array of strings corresponding to available serial IO devices - .open(int i, int baud, int mode) open device with index i. baud can be a constant specifying which standard serial baud rate is used (e.g. SerialIO.B9600). mode can be SerialIO.ASCII or SerialIO.BINARY to specify ASCII or binary interpretation of serial data. - .onLine() - .onByte() - .onBytes(int num) - .onInts(int num) - .onFloats(int num) chuck to now to wait for that type of data to arrive (in the specified quantity). E.g. serial.onLine() => now; will wait for 1 newline-terminated string to arrive from the serial device. - .getLine() .getByte() retrieve data requested as above as string/byte - .getBytes() .getInts() .getFloats() retrieve data requested using the onLine()/etc. above. as array of data type - .baudRate() .baudRate(int baud) get/set baud rate - SerialIO.B2400 SerialIO.B4800 SerialIO.B9600 SerialIO.B19200 SerialIO.B38400 SerialIO.B7200 SerialIO.B14400 SerialIO.B28800 SerialIO.B57600 SerialIO.B115200 SerialIO.B230400 available baud rates - (added) Regex class Class for regular expression matching and replacing in strings. Regex style is POSIX-extended. - RegEx.match(string pattern, string str) Return true if match for pattern is found in str, false otherwise - RegEx.match(string pattern, string str, string matches[]) Same as above, but return the match and sub-patterns in matches matches[0] is the entire matched pattern, matches[1] is the first sub-pattern (if any), and so on. - RegEx.replace(string pat, string repl, string str) Replace the first instance of pat in str with repl, returning the result. - RegEx.replaceAll(string pat, string repl, string str) Replace all instances of pat in str with repl, returning the result. - (fixed) --adc:<N> now works as expected - (fixed) FileIO => string bug - (fixed) LiSa.sync/LiSa.track now works when set to 1 (playhead follows input, normalized/rectified to [0,1]) 2 (playhead follows input, non-normalized/rectified) affects examples/special/LiSa-track*.ck - (fixed) LiSa interpolation bug - (fixed) .clear() function of arrays properly removes all items of the array - (fixed) != properly handles comparison between a string and literal null - (fixed) multichannel refcounting bug - (fixed) WvOut performs IO writes on separate thread, significantly minimizing audio underruns - (fixed) crash in Chorus destructor - (fixed) crash in Mandolin destructor - (fixed) ADSR correctly initialized in "DONE" state miniAudicle --- 1.3.0 - (added) chuck-1.3.2.0 - (added)(Win/Linux) completely new GUI architecture based on Qt - (added) Clear VM function -- remove all shreds and reset public user types - (added) export as WAV + Ogg + M4A (Mac only) + MP3 (if lame exe present) - (added) examples browser - (added) editor tabs - (added) complex/polar type names highlighted - (added) highlight chout/cherr - (added) Class/UGen type names highlighted - (added)(Windows) .ck file association and double-click to open in shell - (fixed) better read-only file handling - (fixed)(Mac) chugin browser icons not appearing in 10.5/10.6 - (fixed)(Mac) better MAUI stability - (fixed)(Windows) Windows XP emulation mode no longer required on Vista/7

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Princeton position
by Dan Trueman 03 Oct '13

03 Oct '13

hi all, for those who might be interested (and note that we have extended the deadline to November 1). please spread the word, thanks! dan >>>>>>> The Department of Music at Princeton University invites applications for a position in Music Composition. This is a tenure-track appointment beginning September 2014 with a three-year renewable term as Assistant Professor. Teaching responsibilities will include instruction at the graduate and undergraduate levels in composition and other areas related to the special interests of the instructor. These areas might include, but are not limited to: theory, music technology, world music, performance, improvisation, or music for film, theater or dance. A Ph.D. or comparable professional experience is required. You may apply online at jobs.princeton.edu (req. # 1300657) Please include the following in your application: 1. Curriculum vitae, including a list of compositions, performances, activities, or any items that demonstrate your central musical concerns. 2. Letters of reference from three people who know your work. 3. One to three pieces of your music, with scores (if appropriate for your work), and one sample of any additional material you feel is relevant (for instance, an essay or academic paper, a course syllabus, documentation of related work such as performance/improvisation, instrument building, or other invention; anything that demonstrates the range of your work and interests). We may request additional material. Materials presented online (via webpage, SoundCloud, DropBox, or similar) are strongly preferred (in which case your letter should include the appropriate links), though hard-copy will be accepted (hard copies will be returned if a stamped, self-addressed envelope is included with your application). Review of applications will begin November 1, 2013. >>>>>>>

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composition faculty job, Columbia University
by Brad Garton 02 Oct '13

02 Oct '13

Please feel free to repost this -- thanks! Brad Garton http://music.columbia.edu/~brad ---------------------------- The Department of Music at Columbia University invites applications for a full-time tenure-track position in Composition at the rank of Assistant Professor, to begin July 1, 2014. The appointee will be expected to carry out creative work; teach composition at undergraduate and graduate levels; teach in music theory or some other area of intellectual interest, as well as in the undergraduate Core Curriculum; and participate actively in the development of the Department's programs. We seek candidates who, through their composing, research, teaching, and service, can contribute to the diversity and excellence of the academic community at Columbia. An appropriate doctorate or its professional equivalent must be in hand at the time of the appointment. Significant achievement and potential as a composer is the most important qualification. We are open to a wide range of aesthetic and technical orientations. A candidate's potential for working closely with the Computer Music Center would be viewed as an advantage, as would any involvement that would expand the scope of compositional possibility at Columbia. Through Columbia University's online application system, please upload a letter of application, curriculum vitae, and the names and contact information for three references. To apply and for more information, please go to: https://academicjobs.columbia.edu/applicants/Central?quickFind=58269 Review of applications will begin on December 1, 2013 and will continue until the position is filled. Columbia University is an Affirmative Action/Equal Opportunity Employer. Women and minorities are especially encouraged to apply.

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ChucK on a Beaglebone Black
by meino.cramer＠gmx.de 01 Oct '13

01 Oct '13

Hi, I managed to compile chuck on a beaglebone black (using Gentoo). Most of the example files play well, but there are some files, which produce a somehow interrupted sound. If this would be due to too less processing power of the CPU (ARMv7 Processor rev 2 (v7l) at 1GHz) -- how can I verify it? What else could produce this problem? Best regards, mcc

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