This White paper examines how COMSOL simulations can be used to optimize the acoustic design of smart glasses, where sound is radiated in near-field or free-field conditions. In these applications, traditional lumped parameter models are often insufficient due to reflections, standing waves, and complex interactions with the human ear.

Using a compact micro loudspeaker integrated into the stem of smart glasses, the paper presents two realistic design case studies: a closed rear volume and a rear-vented configuration. By combining electro and mechanical lumped parameter speaker circuits with detailed COMSOL simulations of the surrounding acoustic environment, including head and ear canal models, the study reveals how design choices directly influence frequency response and speech intelligibility.

The results highlight the advantages of rear venting for improving sensitivity in critical speech frequencies and demonstrate how advanced simulation tools can reduce physical prototyping, shorten development cycles, and lower overall project costs.

Download the full White paper to read more about the simulations, case studies, and key design conclusions in detail here.