The Synthesis ToolKit in C++ (STK)

By Perry R. Cook and Gary P. Scavone, 1995-2004.

v4.2.0: (4 October 2004)
- simultaneous multiple audio APIs supported at compile time
- fixed hidden overloaded virtual functions
- new Asymp exponential envelope class
- various changes to better conform to standard C++ programming practices
- MY_FLOAT type converted to StkFloat and changed throughout (use treesed utility to search/replace in old files)
- most example programs rewritten to use an audio callback paradigm (which works better in OS-X)
- new StkFrames class for vectorized multichannel data and associated new tick() functions making use of StkFrames
- new RtMidi class with MIDI output capabilities (API changes)
- new MidiFileIn class for reading MIDI files
- revised Filter classes to use std::vectors for coefficients (API changes)
- revised Messager class (now queues messages for retrieval) (API changes)
- new abstract parent Effect class for various effects
- added setT60 function to all reverbs
- new abstract parent Generator class for various signal sources
- new abstract parent Function class for tables and various non-linear functions
- Skini class completely rewritten (simplified) using the C++ STL (API changes)
- WvOut classes now clip to -1.0 to +1.0 and report out of range
- new Mutex class
- turned Nagle algorithm off by default in Socket class
- error reporting standardized in all classes

v4.1.3: (22 March 2004)
- bug fix in RtAudio for Windows DirectSound output only support

v4.1.2: (15 March 2004)
- added Linux JACK support to RtAudio
- added optional doNormalize argument to WvIn to allow specification of data normalization or not
- added volume control to demo program and various tcl scripts
- added support for dynamic rawwavePath() setting
- WaveLoop bug fix
- fixed bug in ADSR::setReleaseTime() method
- fixed missing initialization of apInput in non-default constructor of DelayA class
- added time seeding of random number generator to Noise constructor
- update to the contentsAt() method of Delay class
- WAV file fixes (8-bit) in WvIn and WvOut classes
- configure changes
- updated <iostream> include statements and appended "std::" as necessary throughout for compatibility with gcc 3

v4.1.1: (24 October 2002)
- bug fix in RtAudio for Macintosh OS X and Windows ASIO duplex operation
- windows ASIO fix in Stk.h
- documentation updates
- expanded tutorial
- fixed RtDuplex omission in src Makefile

v4.1: (8 October 2002)
- Macintosh OS X support added
- new Whistle class
- added Voicer, SingWave, and VoicForm classes
- improvements/fixes to the banded waveguide instruments
- demo program now uses Voicer, allowing polyphony
- demo tcl/tk scripts changed to use SKINI PitchChange instead of PitchBend
- demo program response to PitchBend modified to octave up/down
- several RtAudio fixes and improvements (OS X and Windows ASIO support added)
- added nextOut() method to Delay classes
- documentation fixes for Reverb classes
- RAWWAVE_PATH changed to include the "rawwave" directory
- "configure" support added for unix systems
- multivoice flag (-n NUMBER) added as command line option to demo program
- sample rate flag added as command line option to all example programs
- socket port number added as command line option to all example programs

v4.0: (April 2002)
- new documentation and tutorial
- several new instruments, including Saxofony, BlowBotl, and StifKarp
- new Stk base class, replacing Object class
- new Filter class structure and methods
- extensive modifications to WvIn and WvOut class structures and methods
- looping functionality moved to WaveLoop (subclass of WvIn)
- automatic file type detection in WvIn ... hosed WavWvIn, AifWvIn, RawWavIn, SndWavIn, and MatWvIn subclasses
- new file type specifier argument in WvOut ... hosed WavWvOut, AifWvOut, RawWavOut, SndWavOut, and MatWvOut subclasses
- some simplifications of Messager class (was Controller)
- new independent RtAudio class
- extensive revisions in code and a significant number of API changes

v3.2: (13 November 2000)
- new control handling class (Controller)
- added AIFF file input/output support
- stklib.a Makefile in src directory
- added C++ error handling capabilities
- added input/output internet streaming support (StrmWvIn/StrmWvOut)
- added native ALSA support for linux
- added optional "device" argument to all "Rt" classes (audio and MIDI) and printout of devices when argument is invalid
- WvIn classes rewritten to support very big files (incremental load from disk)
- changed WvIn/WvOut classes to work with sample frame buffers
- fixed looping and negative rate calculations in WvIn classes
- fixed interpolation bug in RtWvIn
- windoze RtAudio code rewritten (thanks Dave!)
- simplified byte-swapping functions (in-place swapping)
- new FIR filter class (thanks Julius!)
- "stereo-ized" RagaMatic
- probably a bunch more fixes that I've long since forgotten about


v3.1: (13 March 2000)
- new RagaMatic project!!!
- added "microphone position" to Mandolin in STKdemo
- fixed MIDI system message exclusion under Irix
- added a few bitmaps for the Shaker instruments
- made destructors virtual for Reverb.h, WvIn.h and Simple.h
- fixed bug setting delay length in DLineA when value too big
- fixed bug in WinMM realtime code (RTSoundIO)
- added tick() method to BowTabl, JetTabl, and ReedTabl (same as lookup)
- switched to pthread API on SGI platforms
- added some defines to Object.h for random number generation, FPU overflow checking, etc...
- a lot of minor changes, some bug fixes ... can't remember all of them


v3.0: (10 October 1999)
- new #define flags for OS and realtime dependencies (this will probably cause problems for most everyone, but it was necessary to make future ports easier)
- fixed Linux MIDI input bug
- fixed MIDI status masking problem in Windows
- OS type defines now in Makefile
- new RAWWAVE_PATH define in Object.h
- syntmono pulled out to separate directory and cleaned up
- socketing capabilities under Unix, as well as Windoze
- multiple simultaneous socket client connections to STK servers now possible
- MD2SKINI now can merge MIDI and piped messages under Irix and Linux (for TCL->MD2SKINI->syntmono control)
- defined INT16 and INT32 types and fixed various WvIn and WvOut classes
- updated MatWvIn and MatWvOut for new MAT-file documentation from Matlab
- new demo GUI
- minor fixes to FM behavior
- added record/duplex capabilities to RTSoundIO (Linux, SGI, and Windoze)
- fixed bugs in WavWvOut and MatWvOut header specifications
- added RawWvOut class
- new WvIn class with RawWvIn, SndWvIn, WavWvIn, MatWvIn, and RTWvIn subclasses
- removed RawWave, RawShot, RawInterp, and RawLoop classes (supplanted by RawWvIn)
- multi-channel data support in WvIn and WvOut classes using MY_MULTI data type (pointer to StkFloat) and the methods mtick() and mlastOutput()
- now writing to primary buffer under Windoze when allowed by hardware
- cleaned up Object.h a bit
- pulled various utility and thread functions out of syntmono.cpp (to aid readability of the code)


v2.02: (16 November 1998)
- created RawWave abstract class, with subclasses of RawLoop (looping rawwave oscillator), RawShot (non-looping, non-interpolating rawwave player ... used to be RawWvIn), and RawInterp (looping or non-looping, interpolating rawwave player ... used to be RawWave).
- modified DrumSynt to correctly handle sample rates different than 22050 Hz.
- modified syntmono parsing vs. tick routine so that some ticking occurs between each message.  When multiple messages are waiting to be processed, the time between message updates is inversely proportional to the number of messages in the buffer.
- fixed DirectSound playback bug in Win distribution.  Sound was being played at 8-bit, 22 kHz in all cases.  Playback is now 16-bit and dependent on SRATE.
- fixed bug in MD2SKINI which prevented some NoteOff statements from being output.


v2.01: (27 July 1998)
- Corrected extraneous ^M line return characters that were incompatible with SGI.


v2.0: (20 July 1998)
- The first true release by Gary, with unified capabilities across SGI, Linux, and Win platforms.  See WWW pages (http://www-ccrma.stanford.edu/CCRMA/Software/STK/) for more info.


v1.1:
- More linux support and other changes that happened so long ago that I can't remember anymore.  Never officially released.


v1.0:
- Linux support added with the help of Tim Stilson.  Never officially released.


v0.8:
- One of (if not THE) original distributions for SGI, NeXTStep, and basic Win support.  I think this came out in 1996.
