an open-source digital signal processing and sound synthesis language
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Standalone RTcmix

This page describes procedures for use of RTcmix in the command line environment. RTcmix compiles and runs on most Unix-like systems, including various flavors of Linux, Mac OSX, IRIX, and FreeBSD. RTcmix is also available to run in Max and Pd via the rtcmix~ object and the iRTcmix library is available to use in iOS apps (iPhone, iPad, iPod Touch).

Getting RTcmix

The RTcmix source code lives on GitHub. There are two ways to download it.
  1. Go to the RTcmix Releases page, and download the most recent (or other) release, using the "Source code (zip)" or "Source code (tar.gz)" buttons. Unpack this archive, if necessary, by double-clicking its icon. This should produce a folder called "RTcmix-4.1.0" (or a similar version number). Then move this folder into the place where you keep RTcmix source code. The usual place for such things is /usr/local/src, but it can be anywhere.


  2. Assuming you are conversant with git, navigate to a directory where you would like the source code to live, and give this command in the shell:
    git clone

Compiling RTcmix

In the RTcmix source code directory ("RTcmix/"), type the shell command:
There are options you may wish to use with the configure command for your installation -- Perl, Python, X-Windows, fftw-lib, etc. See the INSTALL file in the "RTcmix/" directory for a discussion of these.

After running the configure command (with any appropriate options), then type (in that same "RTcmix/" directory):

	make && make install
RTcmix should compile, install, and off you go!

A Note on the command path

All RTcmix executable commands, including the CMIX command, are placed in the "RTcmix/bin" directory. To access these commands, you can copy/move them to a directory like "/usr/local/bin" or "/usr/bin". These directories are probably already on your command search path. To see your command search path, type the command:
	echo $path
	echo $PATH
and you should see a listing of all directories that are searched for executable commands.

You can also simply add the "RTcmix/bin" directory to your command search path. You will probably need to edit or create a ".tcshrc: or ".cshrc" or equivalent shell initialization file to do this. An example of a line in a ".tcshrc" that accomplishes this is:

	set path=(~/bin $path /usr/local/bin /usr/local/src/RTcmix/bin ".")
Once you do this, you will need to start a new Terminal or Shell window (or use the unix source command) to reflect the change you have made. See the documentation for "tcsh" or "csh" or "bash" for more information.

If all else fails, you can type the whole pathname as a prefix to the RTcmix executable command you want:

	/usr/local/src/RTcmix/bin/sfprint somefile.aiff
	/usr/local/src/RTcmix/bin/cpspch 8.07