RTcmix is a real-time software language for doing digital sound synthesis and signal-processing. It is written in C/C++, and is distributed open-source, free of charge. In certain respects, it is similar in function to other extant unit-generator-based software languages such as CSOUND, SuperCollider and (to a lesser extent) JSyn and Max/MSP -- they do share a common heritage, after all.

RTcmix currently includes the following components:

• a library of low-level C/C++ functions and objects for performing most contemporary digital audio and signal-processing tasks
• a substantial set of pre-coded "instruments" instantiating a variety of DSP and sound-synthesis algorithms
• a fully-featured command-parsing langauge to allow easy incorporation of algorthmic control procedures in sound generation
• an option to allow the perl or python programming languages to be used as the control/command-parsing environment for RTcmix
• a robust and sample-accurate scheduler for timing and arbitrary event-scheduling
• an 'imbedded' RTcmix object and associated library to enable the entire RTcmix language (scheduler too!) to be compiled and used seamlessly within other C/C++ applications
• a TCP/IP socket interface for external control of RTcmix from other processes or machines
• the physical model and PhISEM routines from Perry Cook and Gary Scavone's Synthesis ToolKit (STK) as well as affiliated RTcmix instruments using the stk routines
• the ability to read/write most contemporary soundfile formats by via Bill Schottstaedt's sndlib
• a package of examples showing RTcmix use with MIDI, X11/motif, wxWindows, Lisp, Open Sound Control (OSC), OpenGL, etc.
• a set of command-line utility programs for playing and manipulating soundfiles
• a Max/MSP rtcmix~ object, available for both Mac OSX and Windows XP versions of max/msp
  
  recently completed:
• VST plugin authoring capability (via max/msp "pluggo")
• dynamic p-field modification (in version 4.0)
  
  almost completed:
• "pull"-model for audio i/o (JACK, PortAudio, etc.)