Developing Embedded Intelligence, from Signal to Action

Hello, I'm Julien, an embedded systems engineer specializing in Edge AI and real-time acoustic signal processing. Explore my work and professional journey here.

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About Me

More than 10 years building intelligent acoustic sensors and embedded systems. From sensor measurement to real-time signal processing and Edge AI, I enjoy working on challenging problems and sharing my knowledge with the community.

Real-Time C/C++PythonSTM32 / ESP32FreeRTOS
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Featured Projects

Edge AI applications and real-time signal processing on embedded systems.

Dum-E — an autonomous robotic companion

Dum-E — an autonomous robotic companion

An evolving ESP32-S3 robotic companion combining 3D proximity sensing, an expressive vector face, motion, audio, and wireless updates.

ANR LIGHT-SWIFT / Acoustic Edge AI Sensor

ANR LIGHT-SWIFT / Acoustic Edge AI Sensor

Real-time acoustic monitoring system developed within the ANR LIGHT-SWIFT project.

Predict / Industrial Predictive Maintenance Sensor

Predict / Industrial Predictive Maintenance Sensor

Industrial IoT sensing platform for predictive maintenance on rotating assets.

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Toolbox

The tools I use and the technologies I work with.

Python
STM32
VSCode
GitHub
Linux
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Guest Editor

Collection Nature Scientific Reports

Guest Editor for the Collection on "Environmental Acoustic Monitoring and Edge AI" - accepting submissions through 2026.

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Blog

Latest Posts

Compressing a 1D CNN for Edge AI: Results, Limits and Trade-offs
Machine Learning

Compressing a 1D CNN for Edge AI: Results, Limits and Trade-offs

Distillation, PTQ and QAT quantization of a 1D CNN for activity recognition, followed by an ONNX Runtime benchmark in Python and C++.

September 16, 2026

Dum-E: building an expressive ESP32-S3 deskpet
Embedded Systems

Dum-E: building an expressive ESP32-S3 deskpet

Connecting 3D proximity sensing to an expressive face with FreeRTOS and LVGL.

August 26, 2026

Reverse engineering a BLE smart ring
Electronic

Reverse engineering a BLE smart ring

BLE analysis of a cheap smart ring using JRing, Wireshark, and an nRF52840 dongle.

July 9, 2026

Acoustic Drone Detection on low-cost ESP32
Electronic

Acoustic Drone Detection on low-cost ESP32

Efficient frequency detection of drone rotor harmonics using Goertzel algorithm on low-cost ESP32 hardware.

June 3, 2026

Ultra-Low-Power Edge AI with STM32U3
Electronic

Ultra-Low-Power Edge AI with STM32U3

Exploring the STM32U3 series featuring near-threshold design for unprecedented energy efficiency.

May 31, 2026

IEEE Publication: Energy Efficiency Improvement Methods for Edge AI IIoT Networks: An Overview
Research

IEEE Publication: Energy Efficiency Improvement Methods for Edge AI IIoT Networks: An Overview

Co-authored research paper on state-of-the-art energy efficiency improvement methods for Edge AI IIoT networks.

June 1, 2026