Designing better earphones – before building a single prototype

True Wireless earphones pack an extraordinary amount of technology into a very small space: Bluetooth, active noise cancellation, microphones, touch controls, and a battery, all competing for room around the loudspeaker driver that makes them actually work. Getting the acoustics right in that environment is a serious engineering challenge.

Our latest white paper, walks through how our application engineers use COMSOL Multiphysics to simulate the acoustic performance of a TWS earphone at the design stage, before any physical prototype is produced. The simulation model combines a lumped parameter electrical circuit with a full acoustic finite element model, capturing not just how the driver produces sound, but how the surrounding geometry shapes what the listener actually hears.

The paper shows how changes to the nozzle, front volume, and internal venting affect the frequency response and how automated mesh optimization can push that response toward a predefined target curve. It also demonstrates something physical measurements simply cannot offer: a view inside the device to understand why peaks and dips occur.

Download the full White paper to read the above in detail here.