Tag: programming

https://audio.dev/ -- @audiodevcon​
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ESP32-based Open-Source Audio Platform, CTAG-TBD - Robert Manzke - ADCx Copenhagen 2026
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CTAG-TBD is an open-source embedded audio platform for low-latency real-time DSP, rapid algorithm prototyping, and deployment in Eurorack and standalone musical instruments. Developed within the Creative Technologies Arbeitsgruppe at HAW Kiel, the project builds on earlier ESP32-based audio work and provides a modular C++ architecture with dynamically loadable plugins and a simulator for hardware-independent development.

The platform explores the practical limits of commodity microcontrollers for deterministic audio processing. Implementations across ESP32, ESP32-S3, and ESP32-P4 address constraints including shared FPU resources, cache stalls during flash access, limited IRAM, PSRAM bandwidth, memory fragmentation, and cross-core interference. TBD’s real-time architecture isolates non-deterministic services such as the web UI, hardware control, and API handling from the audio path by assigning a dedicated core to DSP execution and using queues, atomics, IRAM-resident code, and custom arena allocation for robust runtime plugin management.

Recent ESP32-P4-based prototypes demonstrate substantially improved computational and memory performance, dual-core floating-point execution, SD-card-hosted UI assets, and stable sub-millisecond audio latency with dynamically loadable DSP modules. Combined with a CMake-based workflow, JSON-defined interfaces, an integrated DSP library, and VCV Rack support, CTAG-TBD provides a practical research and development platform for embedded audio, open musical instrument design, and musician-centered interaction.
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Robert Manzke

Robert is Professor of Computer Science at HAW Kiel, where he focuses on ubiquitous computing, creative technologies, and music technology. With a background in electrical engineering, DSP, and a Ph.D. in computational imaging sciences, his work bridges signal processing, algorithm development, and interactive embedded systems. His lifelong interest in synthesis and electronic music led him to found CTAG, the Creative Technologies Arbeitsgruppe at HAW Kiel, in 2013 as a university R&D group for student-driven projects in the domain of technology for creativity.
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ADC is an annual event celebrating all audio development technologies, from music applications and game audio to audio processing and embedded systems. ADC’s mission is to help attendees acquire and develop new audio development skills, and build a network that will support their audio developer career.
Annual ADC Conference - https://audio.dev/
https://www.linkedin.com/company/audiodevcon

https://facebook.com/audiodevcon
https://instagram.com/audiodevcon
https://www.reddit.com/r/audiodevcon/
https://mastodon.social/@audiodevcon
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Streamed & Edited by Digital Medium Ltd: https://online.digital-medium.co.uk
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Organized and produced by JUCE: https://juce.com/
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Special thanks to the ADC Team:

Bence Kovacs
Martin Swanholm
Sophie Carus
Derek Heimlich
Andrew Kirk
Bobby Lombardi
Tom Poole
Ralph Richbourg
Jim Roper
Jonathan Roper
Prashant Mishra

#adc #audiodev #dsp #audio #conferenceaudio #audioprocessing #audioproduction #audioprogramming #sound #music #musictech #soundtech #audiotech #audiotechnology

https://audio.dev/ -- @audiodevcon​
ADC Bristol ​- 9th - 11th November
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Doodads & Doohickeys - A Guide to Theory-Crafting & Modelling a Fictional Acoustic Instrument - Syl Morrison - ADC 2025
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Physical modelling is a theory-dense and complex area of plugin design, which tries its utmost to remain faithful to the real-world mechanics of the modelled instrument. But what if that instrument doesn't exist?

This talk aims to explore this concept, prioritising a ""this sounds fun"" approach, rather than a ""this is accurate and actually real maths"" approach, in a hand-wavy, conversational and engaging way. Its purpose is less to give practical modelling advice, and more to encourage experimentation, and to celebrate the art of exploring bizarre-fever-dream plugin ideas.
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Slides: https://data.audio.dev/talks/2025/doodads-and-doohickeys.pdf
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Syl Morrison

A self-taught audio software developer fascinated by eldritch, abstract and unconventional effects, based in Dublin, Ireland.
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ADC is an annual event celebrating all audio development technologies, from music applications and game audio to audio processing and embedded systems. ADC’s mission is to help attendees acquire and develop new audio development skills, and build a network that will support their audio developer career.
Annual ADC Conference - https://audio.dev/
https://www.linkedin.com/company/audiodevcon

https://facebook.com/audiodevcon
https://instagram.com/audiodevcon
https://www.reddit.com/r/audiodevcon/
https://mastodon.social/@audiodevcon
---

Streamed & Edited by Digital Medium Ltd: https://online.digital-medium.co.uk
---

Organized and produced by JUCE: https://juce.com/
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Special thanks to the ADC25 Team:

Sophie Carus
Derek Heimlich
Andrew Kirk
Bobby Lombardi
Tom Poole
Ralph Richbourg
Jim Roper
Jonathan Roper
Prashant Mishra

#adc #audiodev #dsp #audio #conferenceaudio #audioprocessing #audioproduction #audioprogramming #sound #music #musictech #soundtech #audiotech #audiotechnology

https://audio.dev/ -- @audiodevcon​
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Reshaping the Voice - Real-Time Neural Audio Effect - Anders Bargum - ADCx Copenhagen 2026
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In this presentation, Anders Bargum introduces Reshaping the Voice, a real-time neural audio effect designed for voice conversion and speech modification. Voice conversion involves altering a speaker's vocal identity while keeping the underlying words and linguistic content intact. While state-of-the-art voice generation models achieve highly realistic results, they are heavily constrained by high parameter counts, non-causal processing, and high latency, making them unusable for live applications such as digital audio workstations (DAWs) or interactive virtual environments.

To overcome these limitations, the project combines speech representation learning with musical timbre transfer. By utilizing feature disentanglement, the model disassembles input audio into independent streams representing vocal identity (timbre), linguistics (phonetic units), loudness, and pitch. These features can then be individually manipulated, enabling real-time identity swapping, pitch shifting, and even the generation of multi-part vocal choirs from a single monophonic input.

The technical implementation leverages a streamable pipeline trained in PyTorch and exported via TorchScript to run efficiently inside a C++ framework hosted by JUCE. By implementing causal convolutions and state caching rather than relying on future-sample lookaheads, the system achieves incredibly low latency. Anders demonstrates practical deployment of this technology, showcasing a fully functioning VST plugin and an integration within the Unity game engine for designing real-time voices for 3D avatars in virtual reality.
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ADC is an annual event celebrating all audio development technologies, from music applications and game audio to audio processing and embedded systems. ADC’s mission is to help attendees acquire and develop new audio development skills, and build a network that will support their audio developer career.
Annual ADC Conference - https://audio.dev/
https://www.linkedin.com/company/audiodevcon

https://facebook.com/audiodevcon
https://instagram.com/audiodevcon
https://www.reddit.com/r/audiodevcon/
https://mastodon.social/@audiodevcon
---

Streamed & Edited by Digital Medium Ltd: https://online.digital-medium.co.uk
---

Organized and produced by JUCE: https://juce.com/
---

Special thanks to the ADC Team:

Bence Kovacs
Martin Swanholm
Sophie Carus
Derek Heimlich
Andrew Kirk
Bobby Lombardi
Tom Poole
Ralph Richbourg
Jim Roper
Jonathan Roper
Prashant Mishra

#adc #audiodev #dsp #audio #conferenceaudio #audioprocessing #audioproduction #audioprogramming #sound #music #musictech #soundtech #audiotech #audiotechnology

https://audio.dev/ -- @audiodevcon​
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Cross-Platform Framework for Textural Granular Processing - Aman Jagwani & Victor Lazzarini - ADCx Copenhagen 2026
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This talk presents a cross-platform C++ framework for real-time textural time-domain and spectral granular processing called Granular Recipes.

Granular synthesis is a well-explored area of audio DSP that exposes a large number of parameters to users, such as density, pitch, grain size, position, and jitter, resulting in a wide range of sonic possibilities from dense clouds to rhythmic stutters. While this breadth is what makes granular synthesis so powerful, the abundance of parameters and possible sonic outcomes can also lead to a loss of focus or an overwhelming decision-making process, especially during live performance.

Our framework proposes a different approach to granular program development and performance. Instead of exposing raw parameters, we introduce a system of “recipes” or behavioral structures that developers write to define how granular parameters relate to each other and evolve over time. A recipe functions like a developer-level preset that provides a single sonic identity to the resulting granular synthesis, such as pitch-shifting micro-loops, sparse textural bursts, dense clouds, or tempo-synced stutters. This approach allows the developer to constrain or choreograph the parameter space, embedding a sense of compositional intent directly into the programming process.

Once a recipe is active, the performer controls the evolution of texture through just two macros: energy and intensity. Modulating these macros animates the sound while remaining within the sonic signature defined by the recipe. The use of only two macros also makes the resulting instrument particularly conducive to gestural and sensor-based control, since only two mappings, and therefore only two sensors, are required to produce comprehensive transformations of the sound.

In the talk, we present the framework’s layered architecture, consisting of a platform-agnostic core DSP engine, the recipe API, and thin platform bindings that allow the same C++ recipe code to run on desktop, microcontroller, and FPGA targets. On FPGAs, the grain engine runs as custom IP modules in the programmable logic, enabling ultra-low latency and high parallelism, while the recipe system runs on the ARM processing system. By leveraging the throughput and parallelism offered by the FPGA, we have also implemented spectral granular processing, which can interact with the same recipe API, extending the system into the frequency domain within this embedded environment.

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Aman Jagwani

Aman Jagwani, from Mumbai, India, is an audio programmer, musician, and researcher. He completed his Bachelor's degree in Electronic Production and Design and Drum-set Performance at Berklee College of Music, Boston, and later earned a Master of Science in Sound and Music Computing from Maynooth University.
Currently, Aman is undertaking his Ph.D. at Maynooth University with supervisor, Prof. Victor Lazzarini, for which he received the Hume Fellow Scholarship Award. His research centres on audio DSP, embedded systems, FPGAs and interactive musical experience design.

Victor Lazzarini

Victor Lazzarini is a Professor of Music at Maynooth University. A BMus graduate of the Universidade Estadual de Campinas (UNICAMP) in Brazil, he received his AMusD from the University of Nottingham, UK. His academic interests include musical signal processing and sound synthesis; computer music languages; electroacoustic and instrumental composition, and improvisation. He has authored over one hundred fifty peer-reviewed publications in his various specialist research areas. He is the author of Aulib and Aurora, two object-oriented libraries for audio signal processing, and is one of the project leaders for the Csound sound and music programming system.
---

ADC is an annual event celebrating all audio development technologies, from music applications and game audio to audio processing and embedded systems. ADC’s mission is to help attendees acquire and develop new audio development skills, and build a network that will support their audio developer career.
Annual ADC Conference - https://audio.dev/
https://www.linkedin.com/company/audiodevcon

https://facebook.com/audiodevcon
https://instagram.com/audiodevcon
https://www.reddit.com/r/audiodevcon/
https://mastodon.social/@audiodevcon
---

Streamed & Edited by Digital Medium Ltd: https://online.digital-medium.co.uk
---

Organized and produced by JUCE: https://juce.com/
---

Special thanks to the ADC Team:

Bence Kovacs
Martin Swanholm
Sophie Carus
Derek Heimlich
Andrew Kirk
Bobby Lombardi
Tom Poole
Ralph Richbourg
Jim Roper
Jonathan Roper
Prashant Mishra

#adc #audiodev #dsp #audio #conferenceaudio #audioprocessing #audioproduction #audioprogramming #sound #music #musictech #soundtech #audiotech #audiotechnology