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1. PUREDATA DOCUMENTATION MAC OS
2. PUREDATA DOCUMENTATION ANDROID
3. PUREDATA DOCUMENTATION SOFTWARE
4. PUREDATA DOCUMENTATION CODE

Living up to Pd's name, data structures enable Pd users to create arbitrarily complex static as well as dynamic or animated graphical representations of musical data. These can be used in a large variety of ways, from composing musical scores, sequencing events, to creating visuals to accompany Pd patches or even extending Pd's GUI. One of the key innovations in Pd over its predecessors has been the introduction of graphical data structures. Data can be loaded from file, read in from an audio board, MIDI, via Open Sound Control (OSC) through a FireWire, USB, or network connection, or generated on the fly, and stored in tables, which can then be read back and used as audio signals or control data. Pd's native objects range from the basic mathematical, logical, and bitwise operators found in every programming language to general and specialized audio-rate DSP functions (designated by a tilde (~) symbol), such as wavetable oscillators, the Fast Fourier transform (fft~), and a range of standard filters. A special type of message with null content called a bang is used to initiate events and push data into flow, much like pushing a button. Messages are composed of one or more atoms and provide instructions to objects. Atoms are the most basic unit of data in Pd, and they consist of either a float, a symbol, or a pointer to a data structure (in Pd, all numbers are stored as 32-bit floats). Pd supports four basic types of text entities: messages, objects, atoms, and comments. Control messages and audio signals generally flow from the top of the screen to the bottom between "objects" connected via inlets and outlets. As with most DSP software, there are two primary rates at which data is passed: sample (audio) rate, usually at 44,100 samples per second, and control rate, at 1 block per 64 samples. Like Max, Pd is a dataflow programming language. The text strings to the right of the boxes are comments.

PUREDATA DOCUMENTATION CODE

Modular, reusable units of code written natively in Pd, called "patches" or "abstractions", are used as standalone programs and freely shared among the Pd user community, and no other programming skill is required to use Pd effectively. However, Pd is also a programming language. This makes the program arbitrarily extensible through a public API, and encourages developers to add their own control and audio routines in the C programming language, or with the help of other externals, in Python, Scheme, Lua, Tcl, and many others. Like Max, Pd has a modular code base of externals or objects which are used as building blocks for programs written in the software.

PUREDATA DOCUMENTATION SOFTWARE

Pd code forms the basis of David Zicarelli's MSP extensions to the Max language to do software audio processing. Unlike the original version of Max, however, Pd was always designed to do control-rate and audio processing on the host central processing unit (CPU), rather than offloading the sound synthesis and signal processing to a digital signal processor (DSP) board (such as the Ariel ISPW which was used for Max/FTS). In Pure Data and Max, functions or "objects" are linked or "patched" together in a graphical environment which models the flow of the control and audio. Dataflow languages model a program as a directed graph of the data flowing between operations. Pure Data and Max are both examples of dataflow programming languages. Pd is natively designed to enable live collaboration across networks or the Internet, allowing musicians connected via LAN or even in disparate parts of the globe to create music together in real time.

PUREDATA DOCUMENTATION MAC OS

With the addition of the Graphics Environment for Multimedia (GEM) external, and externals designed to work with it (like Pure Data Packet / PiDiP for Linux, Mac OS X), framestein for Windows, GridFlow (as n-dimensional matrix processing, for Linux, Mac OS X, Windows), it is possible to create and manipulate video, OpenGL graphics, images, etc., in realtime with extensive possibilities for interactivity with audio, external sensors, etc. They may be collectively discussed as members of the Patcher family of languages. Pd is very similar in scope and design to Puckette's original Max program, developed while he was at IRCAM, and is to some degree interoperable with Max/MSP, the commercial predecessor to the Max language.

PUREDATA DOCUMENTATION ANDROID

It runs on Linux, MacOS, iOS, Android and Windows. While Puckette is the main author of the program, Pd is an open-source project with a large developer base working on new extensions. Pure Data ( Pd) is a visual programming language developed by Miller Puckette in the 1990s for creating interactive computer music and multimedia works.