Speakers sound brighter at evening / night?


I don't know if anyone has noticed this or studied time of day and perception of sound. But for me, I've found in darker environment especially at night my speakers all sound brighter? A few other hypothesis:
1. Power is different at night 
2. My ear is different at night
3. Lighting is affecting perception of sound 
4. https://www.prnewswire.com/news-releases/the-human-brain-is-sensitive-to-light-breakthrough-findings...
"The study shows that we have brain cells that react to light when exposed directly. These results are encouraging, especially for bright-light therapy channeled via ear canal direct to brain tissue", summarized professor Seppo Saarela, PhD, head of  the biology department and leading the research at the University of Oulu.
bwang29

Showing 1 response by oldhvymec

I know it's a lot quieter at night at my house.  I can hear and feel the train which is about 1500 yard at the closest point. At night I can really hear it if I listen.. I figured it was all the background noise that wasn't there in the day..

It sure makes for a quieter listening session, if the gear is warmed up and it's after 1:00 until about 3:30. My oh My.  The WiFi is shut down from 0001 to 0600, along with a few other things, refer (doesn't come on), fan motors, all the crap.. LOT cleaner grid...

Between the two...a lot better, cleaner SQ

Regards