Personalised Hearing for Savox-Otos
The Challenge
Professional hearing protection headsets are largely one-size-fits-all in terms of audio tuning. Workers with noise-induced hearing loss struggle to understand speech, reducing safety and increasing fatigue. The challenge was to apply worker-specific hearing profiles to the audio signal without modifying the certified headset hardware.
My Role & Collaborators
As Tech Lead, I worked on the audio programming and DSP for embedded systems. I collaborated with the electronics and research teams to integrate the solution.
Our Solution
We designed an inline audio module that uses an NFC card to load the worker's hearing profile into a DSP unit. The module shapes the audio signal in real-time before it reaches the headset. The system works offline, integrates with existing Savox controllers, and requires no user interaction during missions.
Key Techniques
- Embedded DSP (Tympan Rev F / Teensy 4.1)
- NFC-based Profile Loading (PN7150)
- Real-time Audio Processing
- Hardware Integration
Project Links
Results
Designed a functional concept for an NFC-driven inline DSP module. Prototyped the hardware integration and selected algorithms for hearing personalization.
System Architecture
