I like a lot of what you are saying. I also have a Physics degree. I have also worked in industry most of my career (some guest lectures at Stanford...). Spectroscopy and instruments derived from spectroscopy and optical detection are my main areas of interest. Most of what I've learned has counterparts in audio.
I got back into audio about 7 years ago as my ability to pursue athletic goals has declined. I moved to a new house. I assembled my system there and didn't like the sound at all. So got REW and started characterizing my system. Gee, peaks and valleys everywhere! What to do? First attempt: get some traps (from Real Traps by Ethan Winer). I got enough to tame some of the resonances, although not enough to make the room acoustically dead. It helped, but I wanted more mid Bass/lower Midrange.. Stuck. I got a 1/3 octave graphic EQ. Worked great! I tuned my system for days to get flat FR (+/- 4 dB was the best I could do) from 20-20KHz. Didn't like it at all! After some reading and a lot of pondering, I decided to create an FR that gently slopes downward at about 1.5-1.8 dB/octave from 30Hz or so upward. This created the sound that resonates with me.
Clearly, I'm more interested in musical than in detailed.
(BTW: I realize that I could EQ more accurately with software derived filters. I've done that and was not pleased with the sound. I admit I have a very Analog bias.)
I go to opera and concerts regularly. The sound created is purely acoustic. It reverberates in a room that has been expressly designed to create beautiful sound everywhere in that room. the sound of live music in this type of hall is quite blended, not detailed. My reference hall is the War Memorial Opera House in San Francisco. I was just there this last Sunday for an opera.
I have attempted to recreate what I feel is that sound: slightly bass heavy, attenuated higher frequencies and a warm mid-range. I will never reach this goal, but I have gotten to a sound that I thoroughly enjoy.
(BTW, this works very well for rock and jazz.)
I realize that others may have different goals.
I am so grateful that there are tools available today that allow us to fine tune the sound from audio systems to our individual taste.


