You’re watching your favorite movie on your tablet, and the sound from the micro speakers comes through with such richness, loudness, and clarity that you almost feel like you’re listening to full-size speakers (Fig. 1). Now you want to deliver this level of audio performance in even smaller devices, such as wearable, medical, augmented/virtual reality (AR/VR), gaming, and smart-home IoT solutions.
1. Delivering powerful sound and long operation in a small package.