Research Project Title 
Digital Formation of Pulse-Width Modulated Signals for Audio

Principal Investigators
Philip Krein
Dilip Sarwate

Unit #8
Project Overview

Pulse-width modulation (PWM) is a suitable control approach for efficient dc to ac conversion (inverter) systems. In recent years, PWM has been applied to audio amplification, since an inverter with the right control can deliver high power levels to a loudspeaker with efficiencies on the order of 90%. The purpose of the current project is to determine how to achieve very high audio fidelity in a PWM amplifier, without the need for analog data conversion steps.