PIONEAR addresses a fundamental limitation in current microphone technology: no existing microphone matches or exceeds the human ear's sensitivity across the full audible range. The project proposes a groundbreaking solution—chromometric sensing, a new optical sensing method capable of detecting sound with significantly better sensitivity and dynamic range than today's microphones.
At its core, the project envisions a miniature photonic microphone with self-noise below the human hearing threshold (0 dB(A) SPL), and a dynamic range surpassing 130 dB SPL. This leap is enabled by a novel architecture that senses sound through optical frequency shifts. The result is an ultra-sensitive, wideband, low-noise microphone, opening new opportunities for high-fidelity sound capture and intelligent audio systems.
Motivation and Impact
Despite advances in miniaturization, current MEMS microphones suffer trade-offs between sensitivity, robustness, and cost. PIONEAR challenges this status quo by introducing a fundamentally new sensing paradigm that can be scaled using established photonics manufacturing techniques. The expected impacts are:
Technological: Establishing chromometry as a disruptive sensing method applicable beyond audio, including in biochemical, pressure, gas, and inertial sensors.
Economic: Enabling Europe to lead in next-gen sensor markets, particularly in high-growth sectors like smart devices, autonomous systems, and medical diagnostics.
Social and Environmental: Improving digital communication quality, hearing aid performance, and facilitating environmental sensing with ultra-low-power photonic sensors.
