Introduction
Modern hearing protection devices must combine ergonomic design with intelligent embedded systems to meet rising user expectations for comfort, connectivity, and safety. Sigma was engaged to lead the complete development lifecycle of such a device, covering hardware, software, and validation for a new generation of protective audio wearables.
About the Client
The client is a manufacturer of advanced personal protective equipment, with a focus on hearing protection products for industrial and professional users. With the goal of modernizing their portfolio, they required a trusted partner to deliver a fully embedded system—from concept to production validation.
Solution
Sigma’s In-House team managed the entire embedded product development stream, including:
Complete Hardware Design
Component strategy, schematic and layout design
PCBA procurement and prototype assembly
Unit-level and integration testing
Complete Software Design
Architecture and development of base software (BSW), middleware, and application layer
Integration of Bluetooth (BT) profiles, NFC, and acoustic configurations
Full-cycle unit and system testing
Test Development & Validation
Test leadership across product phases
HW/SW integration testing and coordination of final production validation
The cross-functional approach ensured alignment across all disciplines and readiness for serial production.
Results and Deliveries
A complete, production-ready embedded hearing protection solution
Seamless hardware-software integration, supporting advanced connectivity features
Full validation and test coverage across concept, prototype, and production phases
A structured and scalable platform supporting future enhancements
