Mot-clé : DSP

2018

Building Faust with CMake

International Faust Conference, 2018, Mainz, Germany

This paper describes the new Faust building system that is now based on CMake. This new building system preserves the previous Makefile approach as much as possible while offering far more flexibility and above all, a platform independent solution for compiling the various faust components. The paper gives practical information to address basic uses of the building system as well as for advanced and custom settings.

Dominique Fober, Yann Orlarey, Stéphane Letz

Mots-clés :
DSP, Ecosystem, FAUST

MENDING BELLS AND CLOSING BELFRIES WITH FAUST

International Faust Conference, 2018, Mainz, Germany

Finite Element Analyses (FEA) was used to predict the resonant modes of the Tsar Kolokol, a 200 ton fractured bell that sits outside the Kremlin in Moscow. Frequency and displacement data informed a physical model implemented in the Faust programming language (Functional Audio Stream). The authors hosted a concert for Tsar bell and Carillon with the generous support of Meyer Sound and a University of Michigan bicentennial grant. In the concert, the simulated Ts... read_more

Finite Element Analyses (FEA) was used to predict the resonant modes of the Tsar Kolokol, a 200 ton fractured bell that sits outside the Kremlin in Moscow. Frequency and displacement data informed a physical model implemented in the Faust programming language (Functional Audio Stream). The authors hosted a concert for Tsar bell and Carillon with the generous support of Meyer Sound and a University of Michigan bicentennial grant. In the concert, the simulated Tsar bell was triggered by the keyboard and perceptually fused with the bourdon of the Baird Carillon on the University of Michigan campus in Ann Arbor.

John Granzow, Tiffany Ng, Chris Chafe, Romain Michon

Mots-clés :
DSP, Ecosystem, FAUST

In this paper, we present faust2smartkeyb, a tool to create musical apps for Android and iOS using the FAUST programming language. The use of musical instrument physical models in this context through the FAUST Physical Modeling Library is emphasized. We also demonstrate how this system allows for the design of interfaces facilitating skills transfer from existing musical instruments.

Romain Michon, Julius Smith, Chris Chafe, Matthew Wright

Mots-clés :
DSP, Ecosystem, FAUST

This paper demonstrates how FAUST, a functional programming language for sound synthesis and audio processing, can be used to develop efficient audio code for the Web. After a brief overview of the language, its compiler and the architecture system allowing to deploy the same program as a variety of targets, the generation of WebAssembly code and the deployment of specialized WebAudio nodes will be explained. Several use cases will be presented. Extensive bench... read_more

This paper demonstrates how FAUST, a functional programming language for sound synthesis and audio processing, can be used to develop efficient audio code for the Web. After a brief overview of the language, its compiler and the architecture system allowing to deploy the same program as a variety of targets, the generation of WebAssembly code and the deployment of specialized WebAudio nodes will be explained. Several use cases will be presented. Extensive benchmarks to compare the performance of native and WebAssembly versions of the same set of DSP have be done and will be commented

Stéphane Letz, Yann Orlarey, Dominique Fober

Mots-clés :
Audio, Compilation, Domain Specific Language, DSP, FAUST, Signal processing, Webassembly, Webaudio

An Overview of the FAUST Developer Ecosystem

International Faust Conference, 2018, Mainz, Germany

The FAUST language has been designed to provide developers an alternative to C/C++ code, to easily develop and deploy DSP algorithms, effects, instruments etc. The ecosystem is composed of the language and its compiler, as well as different components that help test, benchmark and optimize, and run the resulting code on a large variety of platforms. In this paper we present various architectures files, optimization and testing tools, that have been developed ov... read_more

The FAUST language has been designed to provide developers an alternative to C/C++ code, to easily develop and deploy DSP algorithms, effects, instruments etc. The ecosystem is composed of the language and its compiler, as well as different components that help test, benchmark and optimize, and run the resulting code on a large variety of platforms. In this paper we present various architectures files, optimization and testing tools, that have been developed over the years as part of the FAUST ecosystem, in order to expand the use of the compiler on various targets, and help developers optimize their DSP code. Some of them were publicly announced and can help when deploying DSPs, some are more experimental to be tested by more adventurous developers.

Stéphane Letz, Yann Orlarey, Dominique Fober

Mots-clés :
Faust, Ecosystem, DSP

This paper introduces the FAUST Physical Modeling Library, an environment to create physical models of musical instruments in a modular way in the FAUST programming language. Low and high level elements can be combined to implement existing or completely novel instruments. Various examples of physical models are provided. The combined use of mesh2faust, a tool to generate FAUST physical models from 3D drawings, and of the FAUST Physical Modeling Library is also... read_more

This paper introduces the FAUST Physical Modeling Library, an environment to create physical models of musical instruments in a modular way in the FAUST programming language. Low and high level elements can be combined to implement existing or completely novel instruments. Various examples of physical models are provided. The combined use of mesh2faust, a tool to generate FAUST physical models from 3D drawings, and of the FAUST Physical Modeling Library is also demonstrated through the implementation of a marimba physical model.

Romain Michon, Julius Smith, Chris Chafe, Ge Wang, Matthew Wright

Mots-clés :
FAUST, Ecosystem, DSP

2017

Faust audio DSP language for JUCE

Linux Audio Conference, 2017, Saint-Etienne, France. pp.61-68

Faust [Functional Audio Stream] is a functional programming language specifically designed for real- time signal processing and synthesis [1]. It consists of a compiler that translates a Faust program into an equivalent C++ program, taking care of generat- ing the most efficient code. JUCE is an open-source cross-platform C++ application framework devel- oped since 2004, and bought by ROLI1 in Novem- ber 2014, used for the development of desktop and mobile appl... read_more

Faust [Functional Audio Stream] is a functional programming language specifically designed for real- time signal processing and synthesis [1]. It consists of a compiler that translates a Faust program into an equivalent C++ program, taking care of generat- ing the most efficient code. JUCE is an open-source cross-platform C++ application framework devel- oped since 2004, and bought by ROLI1 in Novem- ber 2014, used for the development of desktop and mobile applications. A new feature to the Faust environnement is the addition of architectures files to provide the glue between the Faust C++ output and the JUCE framework. This article presents the overall design of the architecture files for JUCE.

Adrien Albouy, Stéphane Letz

Mots-clés :
Audio, Domain Specific Language, DSP, FAUST, JUCE, Real-time

2015

Faust audio DSP language in the Web

Linux Audio Conference, 2015, Mainz, Germany. pp.29-36

With the advent of both HTML5 and the Web Audio API (a high-level JavaScript API for audio process- ing and synthesis) interesting audio applications can now be developed for the Web. The Web Audio API offers a set of fast predefined audio nodes as well as customizable ScriptProcessor node, allowing developers to add their own javascript audio processing code. Several projects are developing abstractions on top of the Web Audio API to extend its capabilities, a... read_more

With the advent of both HTML5 and the Web Audio API (a high-level JavaScript API for audio process- ing and synthesis) interesting audio applications can now be developed for the Web. The Web Audio API offers a set of fast predefined audio nodes as well as customizable ScriptProcessor node, allowing developers to add their own javascript audio processing code. Several projects are developing abstractions on top of the Web Audio API to extend its capabilities, and offer more complex unit generators, DSP effects libraries, or adapted syntax. This paper brings an- other approach based on the use of the Faust audio DSP language to develop additional nodes to be used as basic audio DSP blocks in the Web Audio graph. Different methods have been explored: going from an experimental version that embeds the complete Faust native compilation chain (based on libfaust + LLVM) in the browser, to more portable solutions using JavaScript or the much more efficient asm.js version. Embedding the Faust compiler it- self as a pure JavaScript library (produced using Emscripten) will also be described.The advantages and issues of each approach will be discussed and some benchmarks will be given.

Stéphane Letz, Sarah Denoux, Yann Orlarey, Dominique Fober

Mots-clés :
Domain Specific Language, DSP, FAUST, Real-time, Web Audio API

2012

Les recherches décrites ici abordent la problématique de la préservation à long terme du processus temps réel dans la création contemporaine utilisant le numérique. En effet, nous avons développé une stratégie d' abstraction, laquelle consiste à générer automatiquement une documentation mathématique qui explicite la sémantique d'un processus, représentée uniquement à l'aide de la notation mathématique et du langage naturel. L'objectif et lénjeu de cette approch... read_more

Les recherches décrites ici abordent la problématique de la préservation à long terme du processus temps réel dans la création contemporaine utilisant le numérique. En effet, nous avons développé une stratégie d' abstraction, laquelle consiste à générer automatiquement une documentation mathématique qui explicite la sémantique d'un processus, représentée uniquement à l'aide de la notation mathématique et du langage naturel. L'objectif et lénjeu de cette approche sont à situer dans le statut auto-suffisant de cette documentation, en tant que support autonome pour la réimplémentation.

The Faust Online Compiler is a PHP/JavaScript based web application that provides a cross-platform and cross-processor programming environment for the Faust language. It allows to use most of Faust features directly in a web browser and it integrates an editable catalog of examples making it a platform to easily share and use Faust objects.

FAUST est un langage de programmation fonctionnel pour le traitement du signal et la synthèse de sons en temps réel. Grâce à un système de fichiers d’architectures, un seul et unique programme FAUST peut être utilisé pour générer du code pour un ensemble de types d’applications et de plug-ins. Le compilateur en ligne de FAUST ici présenté est une application Web écrite en PHP et en JavaScript offrant un environnement de développement multiplateforme et multipro... read_more

FAUST est un langage de programmation fonctionnel pour le traitement du signal et la synthèse de sons en temps réel. Grâce à un système de fichiers d’architectures, un seul et unique programme FAUST peut être utilisé pour générer du code pour un ensemble de types d’applications et de plug-ins. Le compilateur en ligne de FAUST ici présenté est une application Web écrite en PHP et en JavaScript offrant un environnement de développement multiplateforme et multiprocesseur pour le langage FAUST. Cet outil rend possible l’utilisation de la plupart des fonctionnalités de FAUST dans un navigateur Web et intègre un catalogue d’exemples évolutif faisant de lui une plate-forme pour utiliser et échanger facilement tout objet FAUST. Le fonctionnement du compilateur en ligne de FAUST est présenté en détail dans cet article. Les possibilités offertes par cet outil sont discutées et une brève ouverture sur les enjeux de l’utilisation des technologies Web pour l’informatique musicale est faite.

Romain Michon, Yann Orlarey

Mots-clés :
DSP, FAUST, Programming, Web

2011

Auto-documentation mathématique pour le traitement du signal avec Faust

Journées d'Informatique Musicale, 2011, Saint-Etienne, France

L'article aborde le problème de la préservation à long terme des processus numériques temps réel utilisés dans la création musicale contemporaine. Nous présentons une stratégie de préservation par abstraction mathématique. Elle consiste à générer automatiquement une documentation mathématique qui décrit de manière précise la sémantique complète de tels processus.

Karim Barkati, Yann Orlarey

Mots-clés :
DSP, FAUST, Heritage, Preservation, Programming

2002

An Algebraic approach to Block Diagram Constructions

Journées d'Informatique Musicale, 2002, Marseille, France. pp.151-158

We propose an algebraic approach to block diagram construction as an alternative to the classical graph approach inspired by dataflow models. This block diagram algebra is based on three binary operations : sequential, parallel and recursive constructions. These operations can be seen as high level connection schemes that set several connections at once in order to combine two block diagrams to form a new one. Such algebraic representations have interesting app... read_more

We propose an algebraic approach to block diagram construction as an alternative to the classical graph approach inspired by dataflow models. This block diagram algebra is based on three binary operations : sequential, parallel and recursive constructions. These operations can be seen as high level connection schemes that set several connections at once in order to combine two block diagrams to form a new one. Such algebraic representations have interesting applications for visual languages based on block diagrams. In particular they are very useful to specify the formal semantic of these languages.

Yann Orlarey, Dominique Fober, Stéphane Letz

Mots-clés :
Algebra, Block-diagram, Dataflow, Denotational, DSP, Graph, Semantic

An Algebra for Block Diagram Languages

International Computer Music Conference, 2002, Gothenburg, Sweden. pp.542-547

We propose an algebraic approach to block diagram construction as an alternative to the classical graph approach inspired by dataflow models. The proposed algebra is based on three binary operations of construction : sequential, parallel and recursive constructions. These operations can be seen as high level connection schemes that set several connections at once in order to combine two block diagrams to form a new one. Algebraic representations have interestin... read_more

We propose an algebraic approach to block diagram construction as an alternative to the classical graph approach inspired by dataflow models. The proposed algebra is based on three binary operations of construction : sequential, parallel and recursive constructions. These operations can be seen as high level connection schemes that set several connections at once in order to combine two block diagrams to form a new one. Algebraic representations have interesting application for visual languages based on block diagrams and are useful to specify the formal semantic of these languages.

Yann Orlarey, Dominique Fober, Stéphane Letz

Mots-clés :
Algebra, Block-diagram, Dataflow, Denotational, DSP, Graph, Semantic