@Antedeluvian: Did you buy Joseph a pair of suppressors as well, or does his taste lean towards his mother's?
I don't know if it's just the younger generation, but Joseph seems quite happy with his earbuds in his ears -- he's impervious to anything that's going on around him -- plus in the car he tends to go into hybernation and sleep most of the journey -- he's great to have as a travelling companion because you rarely even notice he's there.
May I suggest a low tech solution? Those little spungy things that you roll between your fingers before inserting into the ear canal work quite well - and the are really cheap.
I once escorted my son to a rock concert. The bass was so loud that I could literally feel it move my shirt against my chest. The high end was painful. Those little spungy things worked wonderfully to remove all pain and I was not an embarassment to my son. Can you imagine walking into a rock concert with those flight-line ear muffs? Sorry, I love my son too much to do that to him.
The little spungy things don't help much with the bass, but I suspect that those huge beasts you love don't either.
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. Are the design challenges the same as with embedded systems, but with a little developer- and IT-skills added in? What do engineers need to know? Rick Merritt talks with two experts about the tools and best options for designing IoT devices in 2016. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.