CANONICAL CSOUND REFERENCE MANUAL PDF

This article is about developing aspects of musical expression, utilizing a number of existing Csound opcodes. Csound has many features through opcodes which provide controls to manipulate the sound at a detailed level, allowing for expressive and dynamic music making. By implementing expressive features, the rendered audio can have qualities which evolve and change over time, in order to achieve a result which can help with the gestures of expression. Versions used for this article were Csound 6.

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Reference Orchestra Opcodes and Operators! ATSbufread — reads data from and ATS data file and stores it in an internal data table of frequency, amplitude pairs. FLloadsnap — Loads all snapshots into the memory bank of the current orchestra. FLmouse — Returns the mouse position and the state of the three mouse buttons. FLsavesnap — Saves all snapshots currently created into a file.

FLslidBnkGetHandle — gets the handle of last slider bank created. FLslidBnkSet — modify the values of a slider bank. FLslidBnkSetk — modify the values of a slider bank. FLslidBnk2Set — modify the values of a slider bank. FLslidBnk2Setk — modify the values of a slider bank. FLupdate — Same as the FLrun opcode. FLxyin — Senses the mouse cursor position in a user-defined area inside an FLpanel.

The opcode works independently as an efficient, flexible reverberator. This opcode will send note events from a source machine to one destination. This opcode will send note events from a source machine to many destinations. JackoAudioIn — Receives an audio signal from a Jack port. JackoAudioOut — Sends an audio signal to a Jack port. JackoFreewheel — Turns Jack's freewheeling mode on or off. JackoInfo — Prints information about the Jack system.

JackoInit — Initializes Csound as a Jack client. JackoOn — Enables or disables all Jack ports. JackoTransport — Control the Jack transport. Or converts an a-rate value to a k-rate value by down-sampling. The morph is performed by linearly interpolating the parameter envelopes frequency, amplitude, and bandwidth, or noisiness of the bandwidth-enhanced partials according to control-rate frequency, amplitude, and bandwidth morphing functions.

All arguments must be passed on the right-hand side. Outputs are returned in the argument. This opcode will broadcast the midi events to all the machines involved in the remote concert. This opcode will send midi events from a source machine to one destination. MixerSetLevel — Sets the level of a send to a buss. MixerGetLevel — Gets the level of a send to a buss.

MixerSend — Mixes an arate signal into a channel of a buss. MixerReceive — Receives an arate signal from a channel of a buss. MixerClear — Resets all channels of a buss to 0.

Has a sync input to sychronize its internal grain scheduler clock to an external clock source. Also known as pvs2array. The call is perfomed in the global environment, and the result the returning value is copied into the Csound output variables specified.

STKShakers — STKShakers is an instrument that simulates environmental sounds or collisions of multiple independent sound producing objects. Also known as pvsfromarray. GEN02 — Transfers data from immediate pfields into a function table. GEN03 — Generates a stored function table by evaluating a polynomial. GEN04 — Generates a normalizing function.

GEN05 — Constructs functions from segments of exponential curves. GEN06 — Generates a function comprised of segments of cubic polynomials. GEN07 — Constructs functions from segments of straight lines. GEN08 — Generate a piecewise cubic spline curve.

GEN09 — Generate composite waveforms made up of weighted sums of simple sinusoids. GEN10 — Generate composite waveforms made up of weighted sums of simple sinusoids. GEN11 — Generates an additive set of cosine partials.

GEN12 — Generates the log of a modified Bessel function of the second kind. GEN13 — Stores a polynomial whose coefficients derive from the Chebyshev polynomials of the first kind. GEN14 — Stores a polynomial whose coefficients derive from Chebyshevs of the second kind. GEN15 — Creates two tables of stored polynomial functions. GEN16 — Creates a table from a starting value to an ending value. GEN17 — Creates a step function from given x-y pairs. GEN18 — Writes composite waveforms made up of pre-existing waveforms.

GEN19 — Generate composite waveforms made up of weighted sums of simple sinusoids. GEN20 — Generates functions of different windows. GEN21 — Generates tables of different random distributions. GEN23 — Reads numeric values from a text file. GEN24 — Reads numeric values from another allocated function-table and rescales them.

GEN25 — Construct functions from segments of exponential curves in breakpoint fashion. GEN27 — Construct functions from segments of straight lines in breakpoint fashion. GEN28 — Reads a text file which contains a time-tagged trajectory.

GEN30 — Generates harmonic partials by analyzing an existing table. GEN31 — Mixes any waveform specified in an existing table. GEN33 — Generate composite waveforms by mixing simple sinusoids. GEN34 — Generate composite waveforms by mixing simple sinusoids. GEN40 — Generates a random distribution using a distribution histogram. GEN41 — Generates a random list of numerical pairs.

GEN42 — Generates a random distribution of discrete ranges of values. GEN51 — This subroutine fills a table with a fully customized micro-tuning scale, in the manner of Csound opcodes cpstun , cpstuni and cpstmid.

GEN52 — Creates an interleaved multichannel table from the specified source tables, in the format expected by the ftconv opcode.

GENtanh — Generate a table with values on the tanh function. GENexp — Generate a table with values on the exp function. GENsone — Generate a table with values of the sone function. GENwave — Generates a compactly supported wavelet function.

GENpadsynth — Generate a sample table using the padsynth algorithm. Decodes an ambisonic B format signal. Codes a signal into the ambisonic B format. Writes audio output to a disk file. The Utility Programs Directories. Soundfile Formats. List of examples B. Pitch Conversion C. Sound Intensity Values D. Formant Values E. Modal Frequency Ratios F. Window Functions G. SoundFont2 File Format H.

Csound Double bit vs. Float bit Glossary.

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Documentation

Reference Orchestra Opcodes and Operators! ATSbufread — reads data from and ATS data file and stores it in an internal data table of frequency, amplitude pairs. FLloadsnap — Loads all snapshots into the memory bank of the current orchestra. FLmouse — Returns the mouse position and the state of the three mouse buttons. FLsavesnap — Saves all snapshots currently created into a file.

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HOW TO USE THIS MANUAL

The Canonical Csound Reference Manual. Other Contributors. Reference Orchestra Opcodes and Operators! FLjoy FLkeyb - Experimental, no documentation exists. May be deprecated in future versions. FLlabel FLloadsnap - Loads all snapshots into the memory bank of the current orchestra. FLloadsnap flooper - Function-table-based crossfading looper.

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The goal of this manual is to provide a readable introduction to Csound. In no way is it meant as a replacement for the Canonical Csound Reference Manual. It is intended as an introduction-tutorial-reference hybrid, gathering together the most important information you will need to work with Csound in a variety of situations. In many places links are provided to other resources such as The Canonical Csound Reference Manual , the Csound Journal , example collections and more. It is not necessary to read each chapter in sequence, feel free to jump to any chapter that interests you, although bear in mind that occasionally a chapter may make reference to a previous one. BASICS provides a general introduction to key concepts about digital sound, vital to understanding how Csound deals with audio. SAMPLES outlines various ways you can record and playback audio samples in Csound; an area that might be of particular interest to those intent on using Csound as a real-time performance instrument.

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