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Ircam: CataRT
Workshop by Diemo Schwarz, Mikhail Malt (IRCAM), Christopher Trapani, Aaron Einbond and Alexis Baskind

With selection process
For this workshop there are still places available. Interested participants of the Darmstadt Summer Course may please e-mail

Dates: 17 – 21 July, 10.00–13.00 & 14.30–17.30, Mornewegschule (Mensa)

Participants: Composers, Improvisers, Sound Artists, Performers, Instrumentalists, Media Artists
Participants must be enrolled for the Darmstadt Summer Course!

Prior Knowledge: good knowledge of Max
Topics: concatenative synthesis, mosaicing, live electronics, digital musical instruments, audio descriptors, timbre space navigation, composing with sound archives, granular synthesis
More information:


CataRT is a technology devoted to structuring sound grains obtained from large sound data bases of any kind according to sound characteristics automatically analyzed and chosen by the user. Thus, sound databases and archives may be explored quickly and intuitively for use in the areas of musical composition, sound design, live performance and improvisation. The workshop will be mainly devoted to presenting the technology and giving participants the chance to use it via “hands-on” sessions in order to acquire the skills necessary for creating compositions, installations, digital instruments and personalized creative tools. At the end of the workshop performances will take place for presenting the participants projects as well as works by invited artist Alexis Baskind. This workshop will be led by Diemo Schwarz, Mikhail Malt (IRCAM), Christopher Trapani (Columbia University, New York) and will be limited to 16 participants having a good knowledge of Max programming.


– computer with the following software installed:
– Max (at least version 6.1)
– Mubu package installed from Max package manager, or forumnet
– catart-mubu patches from
– bach, cage packages from Max package manager
– headphones (obligatory)
– if desired: instruments, controllers (MIDI or other), microphone and audio interface


Diemo Schwarz

Diemo Schwarz is a researcher–developer at IRCAM, and a musician and creative programmer.
His scientific research on sound analysis and synthesis and gestural control of interaction with music is the basis of his artistic work, and allows to bring advanced and fun musical interaction to the general public via installations like the dirty tangible interfaces (DIRTI) and augmented reality (Topophonie mobile).
As a musician, he performs on his own digital musical instrument based on his CataRT open source software, exploring different collections of sound with the help of gestural controllers that reconquer musical expressiveness and physicality for the digital instrument, bringing back the immediacy of embodied musical interaction to the rich sound worlds of digital sound processing and synthesis. He interprets and performs improvised electronic music as member of the 30-piece ONCEIM improvisers orchestra, or with musicians such as Frédéric Blondy, Richard Scott, Gael Mevel, Pascal Marzan, Massimo Carrozzo, Nicolas Souchal, Fred Marty. He also composes for dance, performance, video, and installation.
As creative programmer, Diemo collaborates with artists Sylvie Fleury, Franck Leibovici, Cécile Babiole, Christian Delecluse, Françoise Tartinville on interactive installations involving live sound generation and processing, or motor control. In 2017 he was DAAD Edgar-Varèse guest professor for computer music at TU Berlin.

Mikhail Malt

Researcher in the Musical Representations team of IRCAM, Computer Music Designer Teacher (within the IRCAM Department of Pedagogy), Associate Research Director at Sorbonne University and Composer. Have a scientific and musical background (Engineering, composition and conducting) and his research focuses mainly on the theme of computer-assisted music writing (computer-assisted composition) and musical formalization. Since his arrival at IRCAM (October 1990 as a student and 1992 as a research composer) his main activity has been between research and teaching (especially in the composition and computer music curriculum). Currently, his work is developing on three axes: Modeling and musical representation (The study of the expressivity of formal models in computer-assisted composition, and in real-time generative music, and the modeling of open works), the development of interfaces and tools (for computer-assisted composition, musical analysis and computer-assisted musical performance) and musical creation (electroacoustic and mixed music).

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© ️Philippe Barbosa