Embedded Control Architecture with Supervisory Monitoring Functions for a Class AB Audio Amplifier

The present study introduces the development and implementation of a control and monitoring system that relies on software designed for a 2 × 50 W Class AB amplifier. The primary objective of this research is to integrate the hardware platform with the designed software, ensuring proper functionality and continuously monitoring the inputs, with further potential for integration into smart home applications. Digital control is preferred due to its flexibility, configurability, and ability to provide repeatable system-level behavior, rather than inherent improvements in analog audio performance. The developed architecture is designed to improve control flexibility and support calibration capability for a more precise control of the sound levels without the need for a hardware change. This research looks into challenges encountered in the design of a Class AB amplifier platform, in this case, the response of the amplifier over the defined audio bandwidth and a practical user interface. The proposed solution focuses primarily on firmware-based control, user interaction, system management, and supervisory monitoring of operational states.