NXP smart speaker is based on an i.MX 8M processor and provides a Class-D audio amplifier with a SpeakerBoost acoustic enhancement and protection algorithm in on-chip DSP with temperature and excursion protection. By using an internal adaptive DC-to-DC converter, you get ample headroom for major improvements in audio quality.
The i.MX 8M processor provides excellent audio, voice and video processing, and low-power capabilities that create scalable, safe and secure applications.
This document discusses low power audio application design on i.MX8M. In low power audio, the audio file is decoded on A53 core and played on M4 core, which is intended for a low power application on i.MX8M platform.