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All examples are tested on Csound 5.11 on Linux, Mac OSX and Windows XP.
If you have problems running any of the examples please check the following:
Some examples require the use of a sound file or analysis file in addition to the Csound .csd file. Download the required files and place them in your defined SSDIR, SADIR or present working directory.
Some examples include the option of using a MIDI input and include the -M flag within the CsOptions part of the .csd. If your computer has no MIDI device the file will not run. Either delete the -M flag and lose the MIDI functionality or use the virtual MIDI device by including the flags -M0 -+rtmidi=virtual.
If using QuteCsound, select the 'Run In Term'(inal) option.
If you are still not able to run examples please email me.

2nd July 2010, added 'MouseBass.csd', 'MouseChord.csd' and 'MouseKeyboard.csd'.
29th June, added 'trigger.csd'
5th May, added 'wguide2.csd'
4th May, added '13Delays.csd' in Delays section
29th April, added 'mode.csd' in Sound Generators section


The entire catalogue of 249 example .csd files can be downloaded here: CsoundRealtimeExamples.zip Sound files, analysis files etc. can be downloaded here: SourceMaterials.zip

Individual examples are as follows:

• 3D Audio
  
  • hrtfer_hrtfmove_hrtfmove2_hrftstat.csd - Creates binaural 3D effects. Demonstrates the opcodes 'hrtfer', 'hrtfmove', 'hrtfmove2' and 'hrtfstat'. Uses the HRTF data files HRTFcompact, hrtf-44100-left.dat and hrtf-44100-right.dat and the sound file Bounce.wav.
• Additive Synthesis
  
  • HarmonicAdditiveSynthesis1.csd - Simple 10 harmonic additive synthesis.
  • HarmonicAdditiveSynthesis2.csd - 30 harmonic additive synthesis with additional features .
  • InharmonicAdditiveSynthesis.csd - 10 partial inharmonic additive synthesis with individual envelopes on each partial.
  • AdditiveSynthesisSpectralSketching.csd - An experimental method of sketching sound spectra on an XY panel.
• Convolution
  
  • pconvolve.csd - a demonstration of the 'pconvolve' opcode. Convolution between an audio signal and a short impulse sound file stored on the hard drive. Ideally suited to real-time convolution. Uses the sound files StairwellL.wav, StairwellR.wav, dishL.wav and dishR.wav.
  • convolve.csd - a demonstration of the 'convolve' opcode. Convolution between an audio signal and an impulse file created beforehand using csound's cvanal utility. Uses the cvanal files StairwellL.wav, StairwellR.wav, dishL.cv and dishR.cv.
  • dconv.csd - a demonstration of the 'dconv' opcode. Direct convolution between an audio signal and an impulse sound file loaded into a function table. Uses the sound files Wood.wav and Mug.wav.
• Delays - effects that utilise digital delays
  
  • 01delayw_delayr_deltap.csd - Demonstration of the delayw, delayr and deltap opcodes to create a simple delay. Uses the sound file 808loop.wav.
  • 02delayportamento.csd - The above example with portamento applied to the delay time parameter to create pitch bending effects. Uses the sound file 808loop.wav.
  • 03delayfeedback.csd - The above example with the addition of a feedback loop. Uses the sound file 808loop.wav.
  • 04delayfiltersinloop.csd - The above example with the addition of filters within the feedback loop. Uses the sound file 808loop.wav.
  • 05delayflanger.csd - Demonstration of how to create a flanger effect using a tapped delay with feedback and an LFO. Uses the sound file 808loop.wav.
  • 06delayThruZeroFlanger.csd - Demonstration of how to create a 'through zero' flanger effect. Uses the sound file Loop.wav.
  • 07delayStereoChorus.csd - Demonstration of how to create a stereo chorus effect using modulated delays.
  • 08delaySimplePitchShifter.csd - Demonstration of how to create a simple pitch shifter effect using a modulated delay. Uses the sound file AndItsAll.wav.
  • 09delayCompletedPitchShifter.csd - A more refined pitch shifter effect using dual modulated delays. Uses the sound file AndItsAll.wav.
  • 10DelayDoppler.csd - A spinning doppler effect.
  • 11StereoPingPongDelay.csd - A stereo 'ping-pong' delay.
  • 12MultitapDelay.csd - A stereo multi-tap delay with four taps.
  • 13Delays.csd - A multi-tap delay in which the user can specify the number of taps (up to 128 but could easily be extended further) in real time. Delay tap time spacings and tap amplitudes can be warped.
• Distortion Effects
  
  • distort1.csd - Demonstration of the distort1 opcode which applies modified hyperbolic tangent distortion to an audio signal. Uses the sound file 808loop.wav
  • fold.csd - Demonstration of the fold opcode which can be used to apply an artificial foldover (sample rate reduction) to an audio signal. Uses the sound files 808loopmono.wav and AndItsAll.wav
  • BitDepthReduction.csd - Demonstration of a method that creates the effect of bit depth reduction on an audio signal. Uses the sound files 808loopmono.wav and AndItsAll.wav
  • clip.csd - Demonstration of the clip opcode. Uses the sound file 808loopmono.wav
  • distort.csd - Demonstration of the distort opcode. Uses the sound file 808loopmono.wav
  • powershape.csd - Demonstration of the powershape opcode. Uses the sound file 808loopmono.wav
• FFT
  
  • pvoc.csd - Demonstration of the pvoc opcode. Uses the analysis files AndItsAll.pvx and loop.pvx.
  • pvadd.csd - Demonstration of the pvadd opcode. Uses the analysis files AndItsAll.pvx and 808loopMono.pvx.
  • 01pvsanal_pvsynth.csd - Performs simple analysis and resynthesis of an audio signal as an introduction to Csound's streaming pv opcodes. Uses the sound file AndItsAll.wav.
  • 02pvsfread.csd - Performs resynthesis of a PVOC-EX analysis file giving the user time pointer control. Uses the analysis files AndItsAll.pvx and loop.pvx.
  • 03pvscale.csd - Demonstrates the opcode pvscale by performing frequency scaling on a streaming pv signal. Uses the sound files AndItsAll.wav and loop.wav.
  • 04pvshift.csd - Demonstrates the opcode pvshift by performing frequency shifting on a streaming pv signal. Uses the sound files AndItsAll.wav and loop.wav.
  • 05pvshift_pvscale.csd - Combines the opcodes pvscale and pvshift in series. Uses the sound files AndItsAll.wav and loop.wav.
  • 06pvsfreeze.csd - Demonstration of the pvsfreeze opcode which allows the user to freeze the frequency stream or the amplitude sream (or both) of a streaming pv signal. Uses the sound files AndItsAll.wav and loop.wav.
  • 07pvsblur.csd - Demonstration of the pvsblur opcode which performs averaging on frequency and amplitude streams to create a blurring effect on a pv stream. Uses the sound files AndItsAll.wav and loop.wav.
  • 08pvsmooth.csd - Demonstration of the pvsmooth opcode which performs smoothing on a pv stream. Smoothing can be applied independently on frequency and amplitude streams. Uses the sound files AndItsAll.wav and loop.wav.
  • 09pvsarp.csd - Demonstration of the pvsarp opcode which performs spectral arpeggiation on a pv stream. Uses the sound file AndItsAll.wav.
  • 10pvsvoc.csd - Demonstration of the pvsvoc opcode which combines the spectral envelope of one fsig with the excitation (frequencies) of another. The exitation signal, a simple synthesizer, can be played from a MIDI keyboard. Uses the analysis files AndItsAll.pvx. and loop.pvx.
  • 11pvscross.csd - Demonstration of the pvscross opcode which performs cross-synthesis between two pv streams. One of the streaming pv signals, a simple synthesizer, can be played from a MIDI keyboard. Uses the analysis files AndItsAll.pvx. and loop.pvx.
  • 12pvsbufread.csd - Demonstration of Victor Lazzarini's 'pvsbuffer' and 'pvsbufread' opcodes. Live audio is stored as fsig data in a continuous buffer. The buffer can be read from and subsequently transformed as any other fsig can. This example allows realtime timestretch/compression and pitch shifting, all with feedback.
  • 13pvsbandp.csd - Demonstration of the 'pvsbandp' opcode - an band-pass filter for fsigs. Uses the sound files Songpan.wav and loop.wav.
  • 14pvsbandr.csd - Demonstration of the 'pvsbandr' opcode - an band-reject filter for fsigs. Uses the sound files Songpan.wav and loop.wav.
  • 15pvscross.csd - Demonstration of the 'pvscross' opcode - cross-synthesis for fsigs. Uses the sound files synthpad.wav and loop.wav.
  • 16pvsfilter.csd - Demonstration of the 'pvsfilter' opcode - one fsig is filtered according to the changing spectral envelope of another. Uses the sound files Songpan.wav and loop.wav.
  • 17pvsmorph.csd - Demonstration of the 'pvsmorph' opcode - allows morphing between two simultaneously streamed fsigs. Uses the sound files synthpad.wav, Songpan.wav and loop.wav.
  • 18pvsadsyn.csd - Demonstration of the 'pvsadsyn' opcode which resynthesizes an f-signal but with more user definable options than 'pvsynth'. This opcode is similar to the opcode 'pvadd' and can be thought of as a version of that opcode for streaming f-signals. Uses the sound files Songpan.wav and loop.wav.
• Filters
  
  • areson.csd - Demonstration of the areson band reject filter opcode. Uses the sound file Seashore.wav.
  • atone.csd - Demonstration of the atone high pass filter opcode. Uses the sound file Seashore.wav.
  • atonex.csd - Demonstration of the atonex high pass filter filter opcode. Uses the sound file Seashore.wav.
  • bqrez.csd - Demonstration of the bqrez multi-mode filter opcode. Uses the sound file Seashore.wav.
  • butterbp.csd - Demonstration of the butterbp band pass filter opcode. Uses the sound file Seashore.wav.
  • butterbr.csd - Demonstration of the butterbr band reject filter opcode. Uses the sound file Seashore.wav.
  • butterhp.csd - Demonstration of the butterhp high pass filter opcode. Uses the sound file Seashore.wav.
  • butterlp.csd - Demonstration of the butterlp low pass filter opcode. Uses the sound file Seashore.wav.
  • clfilt.csd - Demonstration of the clfilt multi-mode filter opcode. Uses the sound file Seashore.wav.
  • lowpass2.csd - Demonstration of the lowpass2 low pass filter opcode. Uses the sound file Seashore.wav.
  • lowres.csd - Demonstration of the lowres low pass filter opcode. Uses the sound file Seashore.wav.
  • lowresx.csd - Demonstration of the lowresx low pass filter opcode. Uses the sound file Seashore.wav.
  • lpf18.csd - Demonstration of the lpf18 low pass filter opcode.
  • moogladder.csd - Demonstration of the moogladder low pass filter opcode.
  • moogvcf.csd - Demonstration of the moogvcf low pass filter opcode.
  • reson.csd - Demonstration of the reson band pass filter opcode. Uses the sound file Seashore.wav.
  • tbvcf.csd - Demonstration of the tbvcf low pass filter opcode.
  • tone.csd - Demonstration of the tone low pass filter opcode. Uses the sound file Seashore.wav.
  • tonex.csd - Demonstration of the tonex low pass filter opcode. Uses the sound file Seashore.wav.
  • vlowres.csd - Demonstration of the vlowres lowpass filter opcode. Uses the sound file Seashore.wav.
  • pareq.csd - Demonstration of the pareq parametric equalization opcode. Uses the sound file Seashore.wav.
  • statevar.csd - Demonstration of the statevar filter opcode which provides a digital emulation of an analogue state-variable filter. Uses the sound file Seashore.wav.
  • FormantFilter.csd - 5 reson filters are used to create a filtering effect that imitates the filtering effect of the human mouth expressing a range of vowel sounds. Uses the sound file Seashore.wav.
  • hilbert.csd - Demonstration of the hilbert filter opcode, used to implement frequency shifting. Uses the sound files anditsall.wav, loop.wav and songpan.wav.
  • rbjeq.csd - Demonstration of the rbjeq multi-mode filter opcode. Uses the sound file Seashore.wav.
  • reson_resonr_resonz.csd - Demonstration and comparison of the opcodes reson, resonr and resonz. Uses the sound file Seashore.wav.
  • resony.csd - Demonstration of the resony filter opcode, which implements a stack of second order band-pass filters. Uses the sound file Seashore.wav.
  • rezzy.csd - Demonstration of the rezzy filter opcode, an implementation of a resonant low or high-pass filter. Uses the sound file Seashore.wav.
  • svfilter.csd - Demonstration of the svfilter filter opcode, a 2nd order resonant filter that simultaneously creates low-pass high-pass and band-pass outputs. Uses the sound file Seashore.wav.
• FLTK
  
  • 01FLPanel.csd - Demonstration of how to create an FLTK panel.
  • 02FLSlider.csd - Demonstration of how to create an FLTK slider.
  • 03FLKnob.csd - Demonstration of how to create an FLTK knob.
  • 04FLRoller.csd - Demonstration of how to create an FLTK roller.
  • 05FLtext.csd - Demonstration of how to create a modifiable FLTK number field.
  • 06FLjoy.csd - Demonstration of how to create an FLTK X-Y joystick panel.
  • 07FLcount.csd - Demonstration of how to create an FLTK counter.
  • 08FLtabsFLgroup.csd - Demonstration of how to create an FLTK tabs. Also introduces the FLgroup and FLgroupEnd.
  • 09FLsetVal_i.csd - Demonstration of how to set the initial value of an FLTK valuator.
  • 10FLbutton.csd - Demonstration of how to create and use FLTK buttons.
  • 11FLbox.csd - Demonstration of how to create an FLTK text box.
  • 12FLscroll.csd - Demonstration of how to create FLTK scroll bars.
  • 13FLvalue.csd - Demonstration of how to create an FLTK value readout box.
  • 14FLsetColor.csd - Demonstration of how to colorize FLTK widgets.
  • 15FLbutBank.csd - Demonstration of how to create a bank of FLTK buttons using the FLbutBank opcode.
  • 16FLvslidBnk.csd - Demonstration of how to create a bank of vertical FLTK sliders using the FLslidBank opcode.
  • 17FLkybd.csd - Demonstration of how to create virtual MIDI keyboard within an FLTK panel using the FLkybd opcode.
  • MIDI&FLTK_Combined.csd - Demonstration of how to simultaneously use implement FLTK and MIDI control of the same parameter.
  • RandomMovingSlider.csd - An automated FLTK slider is driven by random functions.
  • RandomMovingXY.csd - An automated FLTK XY Panel is driven by random functions.
  • SliderMultiVariable.csd - A single slider outputs 3 simultaneous different ranges.
  • SliderNonLinear.csd - An FLTK slider's output is rescaled to provide an irregularly moving output.
  • SlidersHorizontal.csd - A look at the different horizontal sliders on offer.
  • SlidersVertical.csd - A look at the different vertical sliders on offer.
  • Snapshots.csd - A demonstration of how to implement FLTK snapshots.
  • xyin.csd - Demonstration of the xyin opcode, used to sense mouse position. (May require the use of the '--displays' command line flag.)
  • FLxyin.csd - Demonstration of the FLxyin opcode, used to sense mouse position within an FLTK panel.
  • PositionSensitveFLbutton.csd - Demonstration of how to use FLxyin to create a position sensistive FLTK button.
  • FLmouse1.csd - Demonstration of the FLmouse opcode, used to sense mouse position over an FLTK panel and the status of the three mouse buttons.
  • FLmouse2.csd - A practical implementation of the FLmouse opcode.
  • FLmouse3.csd - A different practical implementation of the FLmouse opcode that also makes use of the sndwarp opcode. Uses the sound file loop.wav.
• Frequency Modulation (FM) Synthesis, Phase Modulation (PM) Synthesis, Ring Modulation and Amplitude Modulation
  
  • 01FMSynthesisVibratoToSideBands.csd - Demonstration of how FM synthesis sidebands emerge from an implementation of vibrato upon a sine wave.
  • 02SimpleModulatorCarrier.csd - Simple implementation of an FM synthesis carrier-modulator pair.
  • 03ModulatorCarrier.csd - A more refined implementation of an FM synthesis carrier-modulator pair that introduces the typical parameters of FM synthesis.
  • 04ModulatorCarrierWithEnvelopes.csd - An FM synthesis carrier-modulator pair with user definable envlopes on FM index and carrier amplitude. MIDI controllable.
  • 05_2xModulatorCarrierWithEnvelopes.zip - An implementation of a two modulators and a single carrier FM algorithm. MIDI controllable. Includes a file of snapshots.
  • 06FMModModCar.csd - An implementation of a modulator modulating another modulator which in turn modulates a carrier.
  • 07FMModModCarEnvelopes.csd - An implementation of a modulator modulating another modulator which in turn modulates a carrier with envelopes.
  • 08FM2ModCar.csd - An implementation of a 2 parallel modulators modulating the same carrier.
  • 09FM3ModCar.csd - An implementation of a 3 parallel modulators modulating the same carrier.
  • 10FMMod2Car.csd - An implementation of a single modulator modulating two independent carriers.
  • 11FMModCarModCar.csd - An implementation of two parallel modulator-carrier pairs.
  • 12PhaseModulationSynthesisCf.csd - Phase Modulation Synthesis: a single oscillator with a phase modulation feedback loop.
  • 13PhaseModulationSynthesisMfC.csd - Phase Modulation Synthesis: a modulator-carrier pair with a feedback loop around the modulator.
  • 14PhaseModulationSynthesisMCf.csd - Phase Modulation Synthesis: a modulator-carrier pair with a feedback loop around the pairing.
  • 15PhaseModulationSynthesisMM_C.csd - Phase Modulation Synthesis: Two parallel modulators modulating a single carrier.
  • 16PhaseModulationSynthesisMMM_C.csd - Phase Modulation Synthesis: Three parallel modulators modulating a single carrier.
  • 17PhaseModulationSynthesisMMC.csd - Phase Modulation Synthesis: a modulator modulating another modulator which in turn modulates a carrier.
  • 18PhaseModulationSynthesisMMMC.csd - Phase Modulation Synthesis: Three modulators in series, the third of which modulates a carrier.
  • RingModulationAmplitudeModulation.csd - Demonstration of the techniques of amplitude modulation and ring modulation to produce sidebands. Uses the sound files 808loop.wav and Songpan.wav
  • foscil_foscili.csd - Demonstration of the opcodes foscil and foscili, used to quickly create FM synthesis modulator-carrier pairs.
  • TX81Z.csd - Demonstration the opcodes fmb3, fmbell, fmmetal, fmpercfl, fmrhode, fmvoice and fmvoice which are implmentations of 4-operator FM synthesis algorithms from the Yamaha TX81Z sound module. Uses the sound files twopeaks.aiff and fwavblnk.aiff.
• Granular Synthesis
  
  • fof.csd - Simple demonstration of the fof opcode.
  • fofx6.csd - Full demonstration of the fof opcode used to imitate the vocal vowel sounds of various voices. MIDI controllable.
  • fog.csd - Demonstration of the fog opcode. Uses the sound files AndItsAll.wav, loop.wav and ClassicalGuitar.wav.
  • grain3.csd - Demonstration of the grain3 opcode. Uses the sound file AndItsAll.wav.
  • granule.csd - Demonstration of the granule opcode. Uses the sound file AndItsAll.wav.
  • sndwarp.csd - Demonstration of the sndwarp opcode. Uses the sound file AndItsAll.wav.
  • syncgrain.csd - Demonstration of the syncgrain opcode. Uses the sound file AndItsAll.wav.
  • fof.csd - Demonstration of the fof opcode. Uses the sound files AndItsAll.wav and 808loop.wav.
  • MorphingPresets.zip - Morphing between four user definable presets using an FLTK XY panel. This example uses the 'grain3' opcode. Uses the sound file AndItsAll.wav. Includes a text file of presets used by the example.
  • SchedkwhenGranulation.csd - Implements granular synthesis using realtime event generation from within the orchestra using the schedkwhen opcode. Illustrates the advantages that this approach offers. Uses the sound file ClassicalGuitar.wav
  • syncloop.csd - Demonstration of the synclooop opcode (similar to syncgrain). Uses the sound files ClassicalGuitar.wav and 808loop.wav.
• Head Mouse - examples that were originally written for users of a head movement tracking mouse or iris tracking computer. Example still work with a conventional mouse and may be of general interest. May also be relevant to users of touch screens and drawing tablets. Instructions and additional user controls are provided within the .csd file itself.
  
  • new! MouseBass.csd - A mouse controlled bass guitar. Uses the sound file BassGuitarC.wav.
  • new! MouseChord.csd - A mouse controlled means of playing sustained chords. Uses the sound files violins.wav, choir.wav and flute.wav.
  • new! MouseKeyboard.csd - A mouse controlled keyboard. Uses the sound files violins.wav, choir.wav and flute.wav.
• Live Audio Input and Processing
  
  • 01ins.csd - Introduction of the ins opcode used to read the computer's live audio input.
  • 02meters.csd - Adds amplitude meters, amplitude value readouts, independent channel gain controls and independent channel panning controls to the previous example.
  • 03follow2gate.csd - Uses the follow2 opcode to implement a simple amplitude gating effect.
  • follow2EnvelopeFilter.csd - Uses the follow2 opcode to implement envelope following filter effect using also the moogladder resonant low pass filter. Uses either the live input or the sound file loop.wav.
  • pitch.csd - Demonstration of the pitch opcode which is used for pitch and amplitude following.
  • pitchamdf.csd - Demonstration of the pitchamdf opcode which is used for pitch and amplitude following.
  • MIDIKeyboardControlledPitchShifter.csd - A live input pitch shifter effect which dynamically adds transposing voices depending upon notes played on a connected MIDI keyboard.
• Live Sampling
  
  • TableRecBasic.csd - This example records live audio to a function table which can then be played back either once or as a loop. Playback speed can be modulated as can the start and end points.
  • MultiTableRec.csd - Six independent function tables can be recorded to and played back from with speed control.
  • DynamicTriggeredRecord.csd - Recording is automatically triggered whenever the dynamics of the input signal crosses a defined threshold. Recording stops when the dynamics drops below another threshold. Playback can be automatic once recording has completed as can the record ready function.
  • DiskRecAndPlayback.csd - Recording and playback from disk. This method is suited to situations where recording of long pieces of audio is required.
  • sndloop.csd - Demonstration of the sndloop opcode, that allows quick recording and looped playback of live sampled audio. This example implements MIDI modulation of playback speed.
• MIDI Input and MIDI Synthesizer Designs
  
  • 01MIDIInstrActivate.csd - Basic demonstration of Csound instrument activation via MIDI.
  • 02MIDIReadPitchAndVelocity.csd - Demonstration of reading pitch and key velocity into a Csound instrument from a MIDI keyboard using the cpsmidi and ampmidi opcodes.
  • 03MIDILinsegrEnvelope.csd - Demonstration of how to design an envelope with a MIDI controlled release stage using the linsegr opcode.
  • 04MIDIController.csd - Demonstration of how to read data from a MIDI continuous controller using the ctrl7 opcode.
  • 05MIDIControllerInitialisation.csd - Demonstration of how to give a MIDI controller derived variable in Csound an initial value.
  • 06MIDIOneControllerTwoOutputs.csd - Multiple instances of ctrl7 creates two independent variables in Csound.
  • 07MIDIRescaledController.csd - A MIDI controller's output is rescaled within a Csound to produce a non-linear response to fader movement.
  • 08MIDIPitchBend.csd - Demonstration of how to read MIDI pitch bend information into Csound using the pchbend opcode and implement it as pitch bend in a Csound synthesizer.
  • 09PitchBendDiskin1.csd - Pitch bend is implemented in the playback of a sound file using diskin. Uses the sound files 808loopMono.wav. and AndItsAll.wav.
  • 10PitchBendDiskin2.csd - Another method of using pitch bend in the playback of a sound file using diskin. Uses the sound files 808loopMono.wav. and AndItsAll.wav.
  • 11cpstmid.csd - Demonstration of the cpstmid opcode which allows the user to define alternative tuning systems triggerable via MIDI.
  • BasicMonophonicSynth.csd - Demonstration of how to design a basic monophonic MIDI controlled synthesizer with portamento and legato and non-legato envelopes.
  • MonophonicSynth.csd - A more elaborate monophonic MIDI controlled synthesizer with a multi-mode oscillator, filter, pitch and amplitude envelopes, an LFO and a ping-pong delay.
  • PolyphonicSynth.csd - A polyphonic version of the above synthesizer.
  • LiveQuantize.csd - A demonstration of how to quantize an incoming MIDI stream in realtime along with a sounding metronome.
  • MIDITapTempo.csd - Note taps on a MIDI keyboard are interpretted as a tempo and applied to a delay effect.
  • MonoOverlaps.csd - Demonstration how to design a monophonic MIDI instrument that allows note releases to overlap with the next note. This could be used to prevent clicks. This technique could be equally applicable to non-MIDI instruments when using realtime score generation.
• Miscellaneous
  
  • fout.csd - Demonstration of how to use the fout opcode to simultaneously monitor and record the output of a realtime Csound session.
  • waveset.csd - Demonstration of the waveset opcode which performs timestretching on streaming audio signals by repeating wavelets. Uses the sound files 808loopmono.wav. and AndItsAll.wav.
  • DistanceEmulator.csd - An FLTK slider controls multiple parameters to create a more complexing morphing of the sound. This example emulates a sound receding into the distance. Uses the sound file Songpan.wav.
  • date_dates.csd - Opcodes that output the date since 1st January, 1970.
  • timeinsts.csd - An opcode that reports the time elapsed since an instrument was called.
  • rtclock.csd - An opcode that reports the time elapsed since the beginning of the current Csound performance.
  • ftsave_ftload.csd - FLTK slider data is stored to function tables and also as a file on disk using the 'ftsave' and 'ftload' opcodes. This presents an alternative and possibly more powerful method of storing FLTK presets.
  • pan2.csd - Demonstration of the 'pan2' opcode.
  • DbToAmp.csd - Conversion between 'amplitude' and 'decibel' formats for sound intensity. The user can observe and investigate both the numerical and the acoustical relationship between the two formats.
  • Theremin.csd - An FLTK 'theremin'.
  • risset_rhythms.csd - A demonstration of the effect called 'Risset Rhythms'. Uses the sound files 808loopMono.wav, loop.wav, MFEM.wav and sine.wav.
  • limit_mirror_wrap.csd - Demonstration of the opcodes 'limit', 'mirror' and 'wrap', useful in dealing with variables going beyond user defined maxima and minima in a variety of ways.
  • PianoPhaseDemo.csd - A interactive demonstration of the technique behind Steve Reich's piece 'Piano Phase'. This implementation includes several features Steve didn't think of. Uses the analysis files PPhase1.pvx and PPhase2.pvx.
  • Rhythmicon.csd - An implementation of Leon Theremin's 'Rhythmicon' as commissioned by Henry Cowell.
  • ShuffleTableContents.csd - How to shuffle a function table's contents as in shuffling a deck of cards.
  • beating.csd - An exploration of the phenomenon of 'beating'.
  • TuningSystems.csd - An exploration of the equal temperament, just intonation and pythagorean tuning systems.
  • new! Trigger.csd - A demonstration of the trigger opcode, used to sense when a signal crosses a threshold.
• Physical Models
  
  • bamboo.csd - Demonstration of the bamboo opcode. A physical model of a bamboo shaker.
  • dripwater.csd - Demonstration of the dripwater opcode. A physical model of a drip of water.
  • guiro.csd - Demonstration of the guiro opcode. A physical model of a guiro.
  • sekere.csd - Demonstration of the sekere opcode. A physical model of a sekere shaker.
  • sleighbells.csd - Demonstration of the sleighbells opcode. A physical model of a sleighbells instrument.
  • tambourine.csd - Demonstration of the tambourine opcode. A physical model of a tambourine.
  • wgbow.csd - Demonstration of the wgbow opcode. A physical model of a bowed string.
  • wgbowedbar.csd - Demonstration of the wgbowedbar opcode. A physical model of a bowed bar.
  • wgclar.csd - Demonstration of the wgclar opcode. A physical model of a clarinet.
  • wgflute.csd - Demonstration of the wgflute opcode. A physical model of a flute.
  • wgpluck2.csd - Demonstration of the wgpluck2 opcode. A physical model of a plucked string using the Karpluss-Strong algorithm.
  • pluck.csd - Demonstration of the pluck opcode. A physical model of a plucked string using the Karpluss-Strong algorithm.
  • PrePiano.csd - A physical model of a 'Cagian' prepared piano. Original model written by Stefan Bilbao.
  • barmodel.csd - A physical model of a struck metal bar. Original model written by Stefan Bilbao.
  • cabasa.csd - A physical model of a cabasa.
  • crunch.csd - A physical model of a crunch sound.
  • gogobel.csd - A physical model of an agogobel sound. Uses the sound files marmstk1.wav and bounce.wav.
  • mandol.csd - A physical model of a mandolin sound. Uses the sound file mandpluk.aiff.
  • marimba.csd - A physical model of a marimba sound. Uses the sound files marmstk1.wav and Songpan.wav.
  • moog.csd - A physical model of a Moog synthesizer tone. Uses the sound files impuls20.aiff and mandpluk.aiff.
  • repluck.csd - A physical model of a plucked string using the Karpluss-Strong algorithm. Uses the sound file Songpan.wav.
  • sandpaper.csd - A physical model of the sound of rubbed sandpaper.
  • shaker.csd - A physical model of a shaker sound.
  • stix.csd - A physical model of the sound of sticks being struck.
  • vibes.csd - A physical model of a vibraphone sound. Uses the sound files marmstk1.wav and Songpan.wav.
  • wgbrass.csd - A physical model of the sound of a brass instrument.
  • wgpluck.csd - A physical model of a plucked string using the Karpluss-Strong algorithm. Uses the sound file Songpan.wav.
• Realtime Score Generation
  
  • SimpleSchedkwhenNoteGenerator.csd - Demonstration of the schedkwhen opcode which, in this example, is used to generate streams of algorithmically defined note events which are fed to another instrument within Csound.
  • DrunkWalk.csd - Demonstration of the 'Drunk Walk'. A popular method of data generation in algorithmic composition.
  • timedseq.zip - Demonstration of how to play back stored sequences of notes using the 'timedseq' opcode.
  • SimpleDrumSequencer.csd - A simple loop drum sequencer.
  • DrumSequencerVariableLength.csd - A looping drum sequencer with loops of different, metrically related, length.
  • NoteClusters.csd - Generates aleatoric clusters of notes. The number of notes in each cluster can be defined by the user in realtime. This example also serves to demonstrate looping constructions in Csound code.
• Reverbs
  
  • babo.csd - Demonstration of the babo 'ball in a box' reverb opcode. Uses the sound file 808loop.wav.
  • freeverb.csd - Demonstration of the freeverb reverb opcode. Uses the sound file 808loop.wav.
  • nreverb.csd - Demonstration of the nreverb reverb opcode. Uses the sound file 808loop.wav.
  • reverb.csd - Demonstration of the reverb reverb opcode. Uses the sound file 808loop.wav.
  • screverb.csd - Demonstration of the screverb reverb opcode. Uses the sound file 808loop.wav.
  • comb.csd - Demonstration of the comb opcode - a basic comb filter audio processor. Uses the sound file Seashore.wav.
  • vcomb.csd - Demonstration of the vcomb opcode - a comb filter audio processor with realtime variable loop time. Uses the sound file Seashore.wav.
• Sound Generators
  
  • buzz.csd - Demonstration of the buzz opcode.
  • gbuzz.csd - Demonstration of the gbuzz opcode.
  • vco.csd - Demonstration of the vco opcode.
  • vco_with_PWM_LFO_and_LPF.csd - Demonstration of the vco opcode with the addition of a pulse width modulation LFO and a moogvcf resonant low pass filter.
  • WhiteNoisePinkNoise.csd - Demonstration of the noise and pinkish opcodes, using to generate white and pink noise respectively.
  • hsboscil.csd - Demonstration of the hsboscil opcode, an oscillator which takes tonality and brightness as arguments. Includes an implementation of the Risset Glissando (Shepard Tones).
  • pdhalf.csd - Demonstration of the opcodes pdhalf and pdhalfy, used to implement phase distortion synthesis, a method of synthesis used by Casio in their CZ range of synthesizers in the late 1980s.
  • mode.csd - Demonstration of the mode opcode and modal synthesis.
• Sound File Playback
  
  • flooper2.csd - Demonstration of the flooper2 looping sound file playback opcode. Uses the sound files AndItsAll.wav and 808loop.wav.
  • loscil_loscil3.csd - Demonstration of the loscil and loscil3 opcodes - Csound's sampling building blocks. Both opcodes include sustain and release loops. Uses the sound files 808loopMono.wav. and AndItsAll.wav.
  • table_tablei_table3.csd - Demonstration of the table, tablei and table3 opcodes, used to read stored samples. These opcodes are slightly more awkward to use than loscil but utimately offer greater flexibility. Loop start and end points are modifiable in realtime. Uses the sound files 808loopMono.wav. and AndItsAll.wav.
  • bbcut.csd - Demonstration of the bbcut opcode which performs break beat style cut-ups on an audio stream or drum loop. Uses the sound file loop.wav.
  • lposcilsa.csd - Demonstration of the lposcilsa opcode, used to play back a sound file stored in a function table with looping. The loop points are variable at k-rate. Uses the sound file Songpan.wav.
• Specialized Filters
  
  • Phaser1.csd - Demonstration of the phaser1 complex filtering opcode. Uses the sound file Seashore.wav.
  • Phaser2.csd - Demonstration of the phaser2 complex filtering opcode. Uses the sound file Seashore.wav.
• Waveguides
  
  • streson.csd - Demonstration of the streson opcode which filters an audio stream through a string resonator model. Uses the sound file Seashore.wav
  • wguide1.csd - Demonstration of the wguide1 opcode which filters an audio stream through a simple delay and lowpass filter algorithm. Similar to streson and the effect of comb filtering. Uses the sound file Seashore.wav
  • wguide2.csd - Demonstration of the wguide2 opcode which simulates the resonance of a metal plate. Uses the sound file Seashore.wav

All additional required materials (sound files, analysis files etc.): SourceMaterials.zip

Last update 2nd July, 2010

Please report errors and comments to i_mccurdy@hotmail.com