Composers Desktop Project Forum

Have you looked at Trevor's Sound Loom Guide already?
Its a pdf file called twSoundLoomGuide.pdf and it should be inside your CDP installation somewhere. I found that really useful and much better than a video.

I just tried posting to this forum and got the following error:
Not Implemented
GET to /cdpforum/index.php not supported.
Additionally, a 501 Not Implemented error was encountered while trying to use an ErrorDocument to handle the request

upon retrying several times I got blocked by the provider's firewall.
Your connection to this server has been blocked in this server's firewall.
You need to contact the server owner for further information.
Your blocked IP address is XXX.XXX.XXX.XXX
This server's hostname is cpanel07.myhostcenter.com

some of the .HTM files in the excellent html documentation is not found by my browser as I am on a case-sensitive unix filesystem. I had to convert the uppercase .HTM filenames to lowercase to make it work.
This should be done to the docs in one of the next releases perhaps. Let me know if/how I can help.

Hi,

I would like to use the length of a soundfile as a paramter in another cdp program and would like to do this automatically in a (Unix) shell script. sfprops lists the Duration as
File type:  soundfile
Format         :  Standard WAVE format
Sample Rate    :  44100
Channels       :  1
Sample Frames  :  874292
sample type:   :  16-bit
duration       :  19.8252 secs
no peak data in this infile

and I can grep the duration using
cdp_sfprops infile.wav | grep duration | cut -f 2 -d":" | cut -f 3- -d " " | cut -f 1 -d " "
which gives only
19.8252

Is there a quicker/leaner/shorter way to do this which possibly also works on Windows?

Thank you!

You are right: The following computer music software projects use a mailing list (+archive) as their primary means of communication:
CSound: http://csound.1045644.n5.nabble.com/mailing_list/MailingListOptions.jtp?forum=1093014
Pure Data: https://lists.puredata.info/listinfo/pd-list
SoX: https://lists.sourceforge.net/lists/listinfo/sox-users
IRCAM runs multiples: http://listes.ircam.fr/sympa
GNU Octave: https://lists.gnu.org/mailman/listinfo/help-octave

Dear Loganmcbroom
No need to tell me about the shortcomings of a web forum that requires authentication. After all that's why the poll is here. Problem is, I would like to hear a word from the people responsible for CDP, for this forum and others before I go off and create a mailing list. Thank you for your oppinion, which sure gets things moving again.

To anyone else following this thread (yes, one can subscribe to threads in this forum) it would be great to hear more oppinions.

In addition I am in contact with two mailing list providers to see if they can host a cdp-users list.

Please do not start a facebook group. Vote on this thread. It has an option for voting for Facebook. If you want to help, let us know here and you could for example become a mailing list admin (low volume).

Dear HH

unzip the mac documentation from
http://unstablesound.net/downloads/CDPR7Documentation-MAC.zip
and look therein, the SpiralDeskRefR7.pdf should have all algorithms that matter.

Dear Mr. Rutz,

does the output file exist already perhaps? CDP does not overwrite output files.

Hi,

I would like to ask this community if members would be fine moving all discussion to a mailing list rather than a web based forum.

Good reasons to switch are
1.) It integrates better with many users daily communication work flow as they might be subscribed to other mailing lists as well.
2.) People can chose their own user interface (eg. Mail reader/client).
3.) Automatic notification of new postings.
4.) Easy archival, also off-site (in a user's personal directory)
5.) No need to authorise to a webpage to reply, just hit the reply button.
6.) Easier to read and maneuver on mobile devices.

Upon a successful vote for a mailing list I would be willing to find a server/institution to host it and could offer my services as one (of possibly multiple) mailing list adminitrators.

Hi uuuuv,

That's pretty much what I do. I take the comprehensive list of the programs and their modi from SpiralDeskRefContentsR7.pdf and SpiralDeskRefR7.pdf. Usage is explained on the shell itself as mentioned before. Fun starts once you put them into shell scripts of course, which is my number one motivation to use CDP on the shell only.
It makes sense to try to relate some program+modi to the illustrations in the Audible Design appendix, eg. the waveset/wavecycle transformations and to take notes of programs that you already used successfully to better remember in a month from now.

Oh, and I do prefix all CDP binaries on my system with cdp_ to better differentiate them from other unix binaries. I put them all inside a folder called ~/bin/cdpl and then in ~/bin I run
       for a in cdpl/*; do ln -s "$a" cdp_"`basename $a`"; done
to get symlinks to the actual binaries which are all prefixed with cdp_ eg. cdp_distort

I had your error regarding Audacity before, and in my case it helped to start Audacity setting an environment variable before starting it:
LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu/ audacity
which I have in a shell alias as
       alias audacity='LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu/ audacity'
For all questions regarding general Linux audio question I recommend you ask on the Linux Audio mailing list http://lists.linuxaudio.org/listinfo/

Good choice!

So does the above info help you? Or are you looking for something different?

Hi uuuuv,

instead of an IRC I would like to have a proper mailing list over a web forum for communication. I would have replied much earlier if I could have had done it by simple email.

On which operating system are you on?

I find that executing the individual commands from the shell without arguments gives you already a quite clear idea of their useage, different modes and parameters. So in my case I would do something like

analysis of wave file into spectral file
$ pvoc anal 1 infile.wav infile.ana

spectral blurring operation in its 'blur' mode over 16 windows
$ blur blur infile.ana outfile.ana 16

listen to the result (optionally)
$ pvplay outfile.ana

convert to time domain
$ pvoc synth outfile.ana outfile.wav

This syntax can be derived from the useage information the individual programs give you on the shell.

Thanks,

downloading again didn't solve the problem, but running
tar xvfa CDPrelease71src.zip
did, while unzip does still produce the same error.

Peter

Hi Simon,

Trying to unzip the file I am getting the below error message. Is anyone capable of unzipping it?
I am on Debian. Thank you! Peter

$ unzip CDPrelease71src.zip
Archive:  CDPrelease71src.zip
  End-of-central-directory signature not found.  Either this file is not
  a zipfile, or it constitutes one disk of a multi-part archive.  In the
  latter case the central directory and zipfile comment will be found on
  the last disk(s) of this archive.
unzip:  cannot find zipfile directory in one of CDPrelease71src.zip or
        CDPrelease71src.zip.zip, and cannot find CDPrelease71src.zip.ZIP, period.