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It is useful to note the difference between the block diagram and the generated C++ code. As stated, the key idea here is not to compile the block diagram literally, but the mathematical function it denotes. Modern C/C++ compilers also don't compile programs literally. But because of the complex
762:, a FAUST program can be used to produce code for a variety of platforms and plug-in formats. These architecture files act as wrappers and describe the interactions with the host audio and GUI system. As of 2021, more than 30 architectures are supported and new ones may be implemented by anyone.
376:. Instead of compiling a program literally, it compiles the mathematical function it denotes. This may promote component reuse. Moreover, having access to the exact semantics of a FAUST program can simplify preservation issues.
917:
semantics of C/C++ (due to side effects, pointer aliasing, etc.) they can't go very far in that direction. This is a distinct advantage of a purely functional language: it allows compilers to do very advanced optimisations.
727:
can be used to create block diagrams with cycles (that include an implicit one-sample delay). Here is an example of an integrator that takes an input signal X and computes an output signal Y such that Y(t) = X(t) + Y(t−1):
300:
Block diagrams, even if purely textual as in FAUST, promote a modular approach to signal processing that complies with sound engineers' and audio developers' habits.
1095:
The Arrow combinators are more restrictive than their FAUST counterparts, e.g., the nesting of parallel composition is preserved, and inputs of the operands of
257:, or standalone applications. A FAUST program denotes a signal processor: a mathematical function that is applied to some input signal and then fed out.
508:
takes two input signals: X (the signal to be delayed) and D (the delay to be applied), and produces an output signal Y such that Y(t) = X(t − D(t)).
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913:
A useful option makes it possible to generate the block diagram representation of the program as one or more SVG graphic files.
488:
Most FAUST primitives are analogous to their C counterpart on numbers, but lifted to signals. For example, the FAUST primitive
1441:
1386:
1587:
1372:
Orlarey, Yann; Fober, Dominique; Letz, Stéphane (2009). "Faust: an
Efficient Functional Approach to DSP Programming".
75:
53:
46:
190:
1263:
Barthélemy, Jérôme; Bonardi, Alain; Orlarey, Yann; Lemouton, Serge; Ciavarella, Raffaele; Barkati, Karim (2010).
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operator that arranges its left and right expressions in parallel. This is analogous to a stereo cable.
1498:
Orlarey, Yann; Fober, Dominique; Letz, Stéphane (2004). "Syntactical and
Semantical Aspects of Faust".
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205:
663:
These operators can be arbitrarily combined. The following code multiplies an input signal with 0.5:
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The semantics of FAUST is driven to be simple and well-defined. It allows the FAUST compiler to be
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1129:"Faust-STK: a Set of Linear and Nonlinear Physical Models for the Faust Programming Language"
290:
769:
Screenshot of mixer.dsp (available in the FAUST distribution) using the jack-qt architecture
353:
The generated code works at the sample level. It is therefore suited to implement low-level
528:
411:
function in most programming languages. The following is an example that produces silence:
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FAUST is a textual language but block diagram oriented. It combines two approaches:
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to each sample X. All C numerical functions have their counterpart in FAUST. Some
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type class. However, the Arrow type class is not bound to signal processors.
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Technical
Repports of Centre de Recherche en Informatique de MINES ParisTech
1265:"First Steps Towards an Organology of Virtual Instruments in Computer Music"
297:, used to combine signal processors together, as third order functions, etc.
1405:
Proceedings of the 2010 International
Computer Music Conference (ICMC-2008)
1272:
Proceedings of the 2010 International
Computer Music Conference (ICMA-2010)
1168:
Proceedings of the 11th Int. Conference on
Digital Audio Effects (DAFx-11)
1152:
Proceedings of the 11th Int. Conference on
Digital Audio Effects (DAFx-11)
1136:
Proceedings of the 11th Int. Conference on
Digital Audio Effects (DAFx-11)
523:
where the user does manual connections, FAUST primitives are assembled in
430:
The second example copies the input signal to the output. It involves the
350:, which may then interface with other C++ code to produce a full program.
1476:
Proceedings of the 9th Int. Conference on
Digital Audio Effects (DAFx-09)
1325:
Jouvelot, Pierre; Orlarey, Yann (2009). "Semantics for
Multirate Faust".
246:
104:
94:
1288:
Proceedings of the 7th Sound and Music Computing Conference (SMC-2010)
1256:
Proceedings of the 8th International Linux Audio Conference (LAC-2010)
1460:
Proceedings of the 4th International Linux Audio Conference (LAC2006)
1421:
Proceedings of the 5th International Linux Audio Conference (LAC2007)
765:
304:
A FAUST program doesn't describe a sound or a group of sounds, but a
281:
The functional programming approach provides a natural framework for
695:
369:. It has a very deterministic behavior and a constant memory size.
340:
286:
1553:
Proceedings of International Computer Music Conference (ICMA-2002)
504:
primitives are specific to FAUST. For example, the delay operator
457:
Another example sums a stereo signal into a mono signal using the
407:
function that operates on incoming data. This is analogous to the
365:. It is self-contained and does not depend on any DSP library or
1262:
1233:"Work Stealing Scheduler for Automatic Parallelization in Faust"
1177:"Dependent Vector Types for Data Structuring in Multirate Faust"
1512:
Scaringella, Nicolas; Orlarey, Yann; Fober, Dominique (2003).
1249:"Term rewriting extension for the Faust programming language"
344:
171:
159:
1217:"Automatic Parallelization of Audio Applications with Faust"
1467:
Trausmuth, Robert; Dusek, Christian; Orlarey, Yann (2006).
484:
Block diagrams generated by Faust from some simple programs
195:
Functional programming language for audio signal processing
183:
175:
1493:. Vol. 2005. Computer Music Association. p. 286.
1490:
Proceedings of the International Computer Music Conference
1569:
1544:
Orlarey, Yann; Fober, Dominique; Letz, Stéphane (2002).
1528:
Orlarey, Yann; Fober, Dominique; Letz, Stéphane (2002).
1483:
Orlarey, Yann; Fober, Dominique; Letz, Stephone (2005).
1434:
Introduction to Digital Filters: With Audio Applications
1396:
Orlarey, Yann; Letz, Stéphane; Fober, Dominique (2008).
1339:
Orlarey, Yann; Fober, Dominique; Letz, Stéphane (2009).
1309:
Orlarey, Yann; Letz, Stéphane; Fober, Dominique (2009).
1231:
Letz, Stéphane; Orlarey, Yann; Fober, Dominique (2010).
1215:
Orlarey, Yann; Letz, Stéphane; Fober, Dominique (2010).
1143:
Fober, Dominique; Orlarey, Yann; Letz, Stéphane (2011).
1028:
type class, but is specific to signal processing arrows
216:
1511:
1530:"An Algebraic Approach to Block Diagram Constructions"
1574:, online compiler, support, documentation, news, etc.
1466:
1451:
Gräf, Albert; Kersten, Stefan; Orlarey, Yann (2006).
634:
Here is an example of parallel composition using the
1318:
Proceedings of the Linux Audio Conference (LAC-2009)
1240:
Proceedings of the Linux Audio Conference (LAC-2010)
1485:"Demonstration of Faust Signal Processing Language"
1450:
1341:"Parallelization of Audio Applications with Faust"
925:The Faust semantics is almost the same as that of
1453:"DSP Programming with Faust, Q and SuperCollider"
936:Equivalences between FAUST and Arrow combinators
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1371:
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1224:Proceedings of the Congrès Français d'Acoustique
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293:that operate on them, and FAUST's block diagram
1430:"Appendix K. Digital Filtering in Faust and PD"
1375:New Computanionals Paradigms for Computer Music
1324:
1278:
1174:
753:
308:. The program source is organized as a set of
1537:Journée de l'Informatique Musicale (JIM-2002)
1521:Journée de l'Informatique Musicale (JIM-2003)
1159:Smith, Julius O. III; Michon, Romain (2011).
1127:Michon, Romain; Smith, Julius O. III (2011).
1281:"Depandant Vector Types for Multirate Faust"
1184:Computer Languages, Systems & Structures
1145:"Faust Architectures Design and OSC Support"
908:
774:Some architecture files available for FAUST
538:Simple examples of block diagram composition
511:
312:with at least the definition of the keyword
99:Yann Orlarey, Dominique Fober, Stéphane Letz
19:"FAUST" redirects here. For other uses, see
1311:"Adding Automatic Parallelization to Faust"
1161:"Nonlinear Allpass Ladder Filters in Faust"
1158:
1126:
527:by using a set of high-level block diagram
109:GRAME, Centre National de Création Musicale
1398:"Multicore Technologies in Jack and Faust"
593:Using the sequential composition operator
1427:
1202:
76:Learn how and when to remove this message
1546:"An Algebra for Block Diagram Languages"
1279:Jouvelot, Pierre; Orlarey, Yann (2010).
1175:Jouvelot, Pierre; Orlarey, Yann (2011).
920:
764:
533:
479:
39:This article includes a list of general
492:operates on a signal X by applying the
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571:Sequential composition (precedence 2)
555:Recursive composition (precedence 4)
1411:
1246:
1116:Releases · grame-cncm/faust · GitHub
563:Parallel composition (precedence 3)
25:
723:The recursive composition operator
139:2.60.3 / June 14, 2023
13:
1514:"Automatic Vectorization in Faust"
1469:"Using Faust for FPGA Programming"
1436:. W3K Publishing. pp. 417–?.
1414:"Interfacing Pure Data with Faust"
1205:"Audio Signal Processing in Faust"
902:Polyphonic VST Instrument plug-in
894:Monophonic VST Instrument plug-in
45:it lacks sufficient corresponding
14:
1599:
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587:Merge composition (precedence 1)
579:Split composition (precedence 1)
285:. Digital signals are modeled as
395:of five composition operations.
30:
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398:
232:(Functional AUdio STream) is a
1109:
694:The above may be rewritten in
601:can be routed to the input of
391:. For that, FAUST relies on a
289:of time, signal processors as
1:
1428:Smith III, Julius O. (2007).
1203:Smith III, Julius O. (2011).
1102:
822:iPhone and iPad applications
343:translates FAUST code into a
814:CoreAudio application + QT4
754:Generating full applications
521:visual programming languages
387:, which are constructed via
7:
1588:Audio programming languages
434:primitive that denotes the
260:
10:
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1086:with appropriate function
1065:with appropriate function
18:
16:Audio programming language
1290:: 345–352. Archived from
909:Generating block diagrams
512:Block diagram composition
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1196:10.1016/j.cl.2011.03.001
1084:f>>^h>>>g
1063:f>>^h>>>g
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463:
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403:FAUST programs define a
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1024:is not a method of the
838:JACK application + QT4
830:JACK application + GTK
790:ALSA application + QT4
782:ALSA application + GTK
361:. The code may also be
60:more precise citations.
1359:Cite journal requires
878:Supercollider plug-in
770:
539:
485:
381:functional programming
291:second order functions
271:functional programming
1412:Gräf, Albert (2007).
1247:Gräf, Albert (2010).
921:Arrows-like semantics
798:Android applications
768:
545:composition operators
537:
483:
393:block diagram algebra
295:composition operators
1381:. Edition Delatour.
1099:must match exactly.
389:function composition
240:programming language
937:
870:Q language plug-in
806:Audio Unit plug-in
775:
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374:semantically driven
316:(the equivalent of
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1073:in special cases)
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760:architecture files
543:The block diagram
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287:discrete functions
95:Original author(s)
88:
1443:978-0-9745607-1-7
1388:978-2-7521-0054-2
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875:supercollider.cpp
862:Puredata plug-in
819:ios-coreaudio.cpp
591:
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502:signal processing
436:identity function
359:recursive filters
283:signal processing
267:programming model
244:signal processing
242:for implementing
237:purely functional
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1301:2011-10-11
1274:: 369–372.
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1103:References
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339:The FAUST
265:The FAUST
247:algorithms
156:Written in
143:2023-06-14
66:March 2015
41:references
990:^>>
927:Haskell's
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496:function
251:libraries
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363:embedded
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212:Website
201:License
180:Windows
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230:FAUST
217:faust
172:Linux
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1438:ISBN
1383:ISBN
1365:help
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318:main
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