| ►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 output stream parameters |
| 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 |