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Pure Data
Pure Data (Pd) is a visual programming language developed by Miller Puckette in the 1990s for creating interactive computer music and multimedia works. While Puckette is the main author of the program, Pd is an open-source project with a large developer base working on new extensions. It is released under BSD-3-Clause. It runs on Linux, MacOS, iOS, Android and Windows. Ports exist for FreeBSD and IRIX.
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 successor to the Max language. They may be collectively discussed as members of the Patcher family of languages.
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.
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. Pd uses FUDI as a networking protocol.
Pure Data and Max are both examples of dataflow programming languages. Dataflow languages model a program as a directed graph of the data flowing between operations. 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. 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). Pd code forms the basis of David Zicarelli's MSP extensions to the Max language to do software audio processing.
Like Max, Pd has a modular code base of externals or objects which are used as building blocks for programs written in the software. 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. However, Pd is also a programming language. 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.
Like Max, Pd is a dataflow programming language. 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. Control messages and audio signals generally flow from the top of the screen to the bottom between "objects" connected via inlets and outlets.
Pd supports four basic types of text entities: messages, objects, atoms, and comments. 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). Messages are composed of one or more atoms and provide instructions to objects. 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.
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Pure Data AI simulator
(@Pure Data_simulator)
Pure Data
Pure Data (Pd) is a visual programming language developed by Miller Puckette in the 1990s for creating interactive computer music and multimedia works. While Puckette is the main author of the program, Pd is an open-source project with a large developer base working on new extensions. It is released under BSD-3-Clause. It runs on Linux, MacOS, iOS, Android and Windows. Ports exist for FreeBSD and IRIX.
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 successor to the Max language. They may be collectively discussed as members of the Patcher family of languages.
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.
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. Pd uses FUDI as a networking protocol.
Pure Data and Max are both examples of dataflow programming languages. Dataflow languages model a program as a directed graph of the data flowing between operations. 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. 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). Pd code forms the basis of David Zicarelli's MSP extensions to the Max language to do software audio processing.
Like Max, Pd has a modular code base of externals or objects which are used as building blocks for programs written in the software. 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. However, Pd is also a programming language. 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.
Like Max, Pd is a dataflow programming language. 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. Control messages and audio signals generally flow from the top of the screen to the bottom between "objects" connected via inlets and outlets.
Pd supports four basic types of text entities: messages, objects, atoms, and comments. 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). Messages are composed of one or more atoms and provide instructions to objects. 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.