While it is not that hard to create a class "D" audio amplifier that functions at some level, creating one that has very low distortion and low noise, is quite a different task. While in theory a class "D" amplifier can be capable of very low distortion, what we often see is something that "sounds good" to those who are not bothered by 10% distortion as a routine condition. And of course power supply rejection is also an area where cheaper acts against better.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.