And followup. What is your quest?

Green, no contest. It's everywhere out here, so I'm used to it — and it's the color of old CRT phosphors, which keeps it close to the heart for a retro-computing guy. Teal as the runner-up.

Complain about artists expecting you to work miracles, mostly.

Not yet, I'm afraid — one down the summary execution path then. Planning a Lilygo T-Beam for the climbing trips (offline maps + a mesh net where there's no signal up there), so I should be compliant soon enough. What's the code of conduct say about a CRT that hasn't been meshed?

Oh I almost forgot I backed The Cardputer Zero from M5 Stack on Kickstarter. I'm going to be getting it with the LoRa cap whenever they start shipping them out. Hopefully soon.

Sound engineers deal more with the recording and electronics, you want an acoustician. That is a big hobby of mine and I've helped design a few listening rooms and home theaters.

That being said, those foam pads on the wall aren't a meme, they just don't do what people think. They absorb reflections of sound, meaning they make things quieter in the room that made noise in that room. If you've ever clapped your hands in a gym and heard the echo bounce around, that's what it stops.

What they don't do is stop sound from traveling through a wall when it's hit. That does indeed require either density or distance (an air gap). Thickness is usually just an easy way of increasing density so I don't actually count it separately.

If you can explain your situation a little more (house vs apartment, what sound is bugging you, etc) I can maybe suggest more. Sometimes it can be sound passing through unexpected holes (around windows is an exceptionally notorious spot, some installers spray expanding foam now but not all) and not actually transmitting through the wall itself.

It depends what kind of sound.

In general though, you heard right. There is a product called "mass-loaded vinyl" that I used (by soundsulate, I think) between TV and my wife's study - but if you have access to the wall cavity, rockwool is very good

If you don’t own the place, forget about it. If you do, and you’re serious, put up a metal channel on the wall to create space and use sound damping material in between the wall and channel, then put another layer of drywall with sound damping material. Low frequencies make vibrations through anything connected so even the ceiling could be a resonator. You’re gonna have to either isolate the room with the sound or the room you want to be sound proof. It’s a big job.

Honestly? More fond than skeptical. The rain's a myth people repeat more than it's true, the coffee is a genuine religion, and the live music is still very much alive in the small venues out east. What I'd change: the cost of living creeping up while the culture stays the same. Where are you asking from?

And are we fans of Smith Rock? Leavenworth? Squamish? 👀

I do, like as a backup or whatever. Here’s my card:

Name: Dr. Stud McMuffin, PhD
Occupation: Body Movin’
Puts Out: 100%
Gives Up: Never
Lets Down: Never
Run Around: Never
Desert You: Never 
Phone: +1 (248) 434-5508