48-hour hackathon to ideate and prototype timbre tools for the digital instrument maker
    Music technologists, Audio and AI developers, Interaction designers and engineers; Researchers in musical interaction, timbre, AI
  • WHEN
    16* & 23-25 February 2024
    We are the Communication Acoustics Lab (COMMA) at the Centre for Digital Music (C4DM), part of Queen Mary University of London (QMUL)
    QMUL’s Mile End campus
    & anywhere on earth

Timbre Tools for the Digital Instrument Maker

The traditional luthier will select rosewood to create a dark and complex guitar sound. The analog synth designer may choose optical components for crafting warm tones. Yet timbre — or tone, texture, sound colour — is conspicuously absent from the digital instrument maker’s toolbox. Making digital musical instruments (DMIs) is still based on concepts from early analog and digital synthesis, and relies on classical tools like oscilloscopes and signal generators.

We seek to shift this perspective of DMI design to a more sound-based, timbre-first practice. Timbre Tools will augment and enrich the digital luthier’s workbench. Through building instruments using flexible, open-ended tools for timbral design, amongst other tools, makers and artists can learn about sound technologies, become more aware of timbre phenomena, and craft compelling new instruments.

Why a hackathon? Who is it for?

The Timbre Tools Hackathon aims to bring together practitioners and researchers in the fields of music technology, audio programming, deep learning, interaction and design engineering, and timbre studies (acoustics, perception, aesthetics). A hackathon is an opportunity to learn from one another, share methods and tools, explore risky ideas, foster collaboration, and innovate across disciplines and communities.

This is an interdisciplinary initiative. Participants from all stages of practice and research are welcome.

What is a Timbre Tool?

It supports the timbral design of digital musical instruments. It is a tool for instrument makers, composers, performers (who make their own bespoke instruments), and even live coders. We are currently engaging with these communities to produce creative prompts for the hackathon.

It is not a tool for musicians (who are not makers) and audiences. We are not looking to build new instruments, but to create new tools that aid the creative process of instrument making. Although we believe all musicians and audiences will ultimately benefit from Timbre Tools!

It can encapsulate one or several notions of the timbre gestalt: tone, sonority, texture, noise, resonances, harmonics, fluctuations, modulations, spectrograms, semantics, metaphor, crossmodality, embodiment, gesture, sensing, material, "the illusory stuff of our dreams" in Schoenberg's words, you name it!

It can be designed from scratch or based on available maker tools. It can be about sensor design and fabrication, interfacing between the physical and digital worlds, or enabling expressive control at multiple levels of meaningful abstraction, amongst many other ideas that we hope to co-develop with hackathon participants.

Machine learning and AI provide interesting opportunities to interface with sound via timbre, and can be a point of entry for creating a Timbre Tool. SP-Tools and the FluCoMa Toolkit are good examples, as are approaches to interactive exploration of latent space in neural audio synthesis.


The Timbre Tools Hackathon will take place at the Mile End campus of Queen Mary University of London (QMUL) and anywhere on earth – remote participation is possible and encouraged – in 4 phases:

    2–8 PM Friday 16 February 2024
    Release of creative prompts and warm-up workshops about SP-Tools with Rodrigo Constanzo, neutone.space with Christopher Mitcheltree, SignalFlow with Daniel Jones, and Bela with Teresa Pelinski and Andrew McPherson. Recordings of the workshops will be streamed and shared online for those who are not able to attend. For those who can attend, socialising and connecting will continue in a pub nearby.
    8 PM Friday 16 to 5 PM Friday 23 February 2024
    A link will be posted to a shared communication board where interested individuals can post project ideas and form collaborations.
    4 PM Friday 23 to 5 PM Sunday 25 February 2024
    Following opening remarks and team sign-up completion (4–5 PM), the hacking period will run for 48 hours. Physical space and materials will be available at QMUL for those joining us in London, but teams can choose to work in any format they see fit. We encourage participants to sleep, eat, and go outside, and not spend all this time hacking.
    5–8 PM Sunday 25 February 2024
    Depending on the number of submissions received, we may demo all submitted projects, or just the highest voted ones. The top 3 voted projects will receive prizes. In any case, a link to all submitted projects will be provided.

We have started putting together a living document of resources for working with and designing timbre. Closer to the Hackathon we will publish a list of physical materials for instrument making that we can provide to teams.


Participants are encouraged to form small teams (up to 5) to collaborate on projects. Solo teams are also welcome. In order to be included in voting, all teams must prepare:

  • A short two minute presentation of their project and ideas. This can be presented in-person on Sunday evening or pre-recorded and submitted as a video.
  • A public repository of source code (or instructions on how to recreate your project) under an Apache-2.0 or compatible licence. Open sharing of ideas is a primary objective of the Timbre Tools Hackathon and permissive licenses will help foster further work in this area.

Interactive demos, websites, audio plug-ins are all welcomed in submissions, but are not required to be considered for voting.


This site will be updated with further information as the hackathon approaches, and all registered participants will be updated via email. In the meantime, if you have any comments or questions, please email c (dot) saitis (at) qmul (dot) ac (dot) uk.