| ►Nstk | The STK namespace | 
| CADSR | STK ADSR envelope class | 
| CAsymp | STK asymptotic curve envelope class | 
| CBandedWG | Banded waveguide modeling class | 
| CBeeThree | STK Hammond-oid organ FM synthesis instrument | 
| CBiQuad | STK biquad (two-pole, two-zero) filter class | 
| CBlit | STK band-limited impulse train class | 
| CBlitSaw | STK band-limited sawtooth wave class | 
| CBlitSquare | STK band-limited square wave class | 
| CBlowBotl | STK blown bottle instrument class | 
| CBlowHole | STK clarinet physical model with one register hole and one tonehole | 
| CBowed | STK bowed string instrument class | 
| CBowTable | STK bowed string table class | 
| CBrass | STK simple brass instrument class | 
| CChorus | STK chorus effect class | 
| CClarinet | STK clarinet physical model class | 
| CCubic | STK cubic non-linearity class | 
| CDelay | STK non-interpolating delay line class | 
| CDelayA | STK allpass interpolating delay line class | 
| CDelayL | STK linear interpolating delay line class | 
| CDrummer | STK drum sample player class | 
| CEcho | STK echo effect class | 
| CEffect | STK abstract effects parent class | 
| CEnvelope | STK linear line envelope class | 
| CFileLoop | STK file looping / oscillator class | 
| CFileRead | STK audio file input class | 
| CFileWrite | STK audio file output class | 
| CFileWvIn | STK audio file input class | 
| CFileWvOut | STK audio file output class | 
| CFilter | STK abstract filter class | 
| CFir | STK general finite impulse response filter class | 
| CFlute | STK flute physical model class | 
| CFM | STK abstract FM synthesis base class | 
| CFMVoices | STK singing FM synthesis instrument | 
| CFormSwep | STK sweepable formant filter class | 
| CFreeVerb | Jezar at Dreampoint's FreeVerb, implemented in STK | 
| CFunction | STK abstract function parent class | 
| CGenerator | STK abstract unit generator parent class | 
| CGranulate | STK granular synthesis class | 
| CGuitar | STK guitar model class | 
| CHevyMetl | STK heavy metal FM synthesis instrument | 
| CIir | STK general infinite impulse response filter class | 
| CInetWvIn | STK internet streaming input class | 
| CInetWvOut | STK internet streaming output class | 
| CInstrmnt | STK instrument abstract base class | 
| CJCRev | John Chowning's reverberator class | 
| CJetTable | STK jet table class | 
| CLentPitShift | Pitch shifter effect class based on the Lent algorithm | 
| CMandolin | STK mandolin instrument model class | 
| CMesh2D | Two-dimensional rectilinear waveguide mesh class | 
| CMessager | STK input control message parser | 
| CMidiFileIn | A standard MIDI file reading/parsing class | 
| CModal | STK resonance model abstract base class | 
| CModalBar | STK resonant bar instrument class | 
| CModulate | STK periodic/random modulator | 
| CMoog | STK moog-like swept filter sampling synthesis class | 
| CMutex | STK mutex class | 
| CNoise | STK noise generator | 
| CNRev | CCRMA's NRev reverberator class | 
| COnePole | STK one-pole filter class | 
| COneZero | STK one-zero filter class | 
| CPercFlut | STK percussive flute FM synthesis instrument | 
| CPhonemes | STK phonemes table | 
| CPitShift | STK simple pitch shifter effect class | 
| CPlucked | STK basic plucked string class | 
| CPoleZero | STK one-pole, one-zero filter class | 
| CPRCRev | Perry's simple reverberator class | 
| CRecorder | A recorder / flute physical model | 
| CReedTable | STK reed table class | 
| CResonate | STK noise driven formant filter | 
| CRhodey | STK Fender Rhodes electric piano FM synthesis instrument | 
| CRtWvIn | STK realtime audio (blocking) input class | 
| CRtWvOut | STK realtime audio (blocking) output class | 
| CSampler | STK sampling synthesis abstract base class | 
| CSaxofony | STK faux conical bore reed instrument class | 
| CShakers | PhISEM and PhOLIES class | 
| CSimple | STK wavetable/noise instrument | 
| CSineWave | STK sinusoid oscillator class | 
| CSingWave | STK "singing" looped soundfile class | 
| CSitar | STK sitar string model class | 
| ►CSkini | STK SKINI parsing class | 
| CMessage | A message structure to store and pass parsed SKINI messages | 
| CSocket | STK internet socket abstract base class | 
| CSphere | STK sphere class | 
| CStifKarp | STK plucked stiff string instrument | 
| CStk | STK base class | 
| CStkError | STK error handling class | 
| CStkFrames | An STK class to handle vectorized audio data | 
| CTapDelay | STK non-interpolating tapped delay line class | 
| CTcpClient | STK TCP socket client class | 
| CTcpServer | STK TCP socket server class | 
| CThread | STK thread class | 
| CTubeBell | STK tubular bell (orchestral chime) FM synthesis instrument | 
| CTwang | STK enhanced plucked string class | 
| CTwoPole | STK two-pole filter class | 
| CTwoZero | STK two-zero filter class | 
| CUdpSocket | STK UDP socket server/client class | 
| CVector3D | STK 3D vector class | 
| CVoicer | STK voice manager class | 
| CVoicForm | Four formant synthesis instrument | 
| CWhistle | STK police/referee whistle instrument class | 
| CWurley | STK Wurlitzer electric piano FM synthesis instrument | 
| CWvIn | STK audio input abstract base class | 
| CWvOut | STK audio output abstract base class | 
| ►CRtAudio | Realtime audio i/o C++ classes | 
| CDeviceInfo | The public device information structure for returning queried values | 
| CStreamOptions | The structure for specifying stream options | 
| CStreamParameters | The structure for specifying input or ouput stream parameters | 
| CRtAudioError | Exception handling class for RtAudio | 
| CRtMidi | An abstract base class for realtime MIDI input/output | 
| CRtMidiError | Exception handling class for RtMidi | 
| CRtMidiIn | A realtime MIDI input class | 
| CRtMidiOut | A realtime MIDI output class |