Originally Posted by SpinMonster
that didn't mean there was a brick wall fall off
I'm not really sure where Spin is going with all this...
Nobody said brickwall-anything, those are your words.
I was just making a condensed blanket generalization so that the post didn't run into a 500 page essay on sound.
Of course there will be SPL from DC to nyquist in every CD that has ever been made, but if it is at -96db or -144db that doesn't really "add" much.
The mp3 format often filters above 16khz to reduce file sizes, the data is lost forever, it can't
be eq'ed back into existence. The same is true for low frequencies. That said: low frequencies contain little information so rolling them off doesn't really save on file-size (and so mp3 doesn't.)
Random wobble from 70's recordings are nothing but noise, coincidental at-best if found on the gold master. Same could be said of mic wind/noise. Maybe it was artistic and intentional, and maybe (likely) it wasn't... it is well-known the limitations of the media of that era.
A purist might say that a bass "house curve" isn't true to the source because it is boosting frequencies that shouldn't be boosted... if one is being true to the source that is!
Early rolloff is a lossy destruction of information, you can't EQ information that was lost, specifically... that had its dynamic range reduced. This is mathematically provable via information theory that dates back 100+ years. Nothing new here.
Generally though -3db is universally
considered the "start" of the rolloff point, which is a 50% reduction in power at the observed frequency (and logarithmically increasing beyond that point).
Let's just say, if ANY amplifier had the rolloff and FR shape of a music track, you likely wouldn't WANT to buy it.
When a person sees a collection of trees they either see a forest or just a collection of trees, both are valid but one could endlessly philosophize about it a thousand different ways to Sunday.
Music and movies are artistic in nature and subjective in value.
One person might find a -12db @ 15hz HPF highly offensive and another person might "love it to death" and vice-versa. Love is in the eye of the beholder.
Generally: playback equipment is much more scientifically rigorous (or can\should be).
For starters you want: the widest bandwidth / least rolloff, the least distortion, and a healthy amount of SPL.
Rolloff is the exact opposite of high-fidelity / high-quality, basically.
That said: all systems have rolloff and are massively flawed.
Often a compromise by budget and available space or WAF ratio.
I think you are preaching to the choir. (Most of us already know all this^, and have for decades...)
and yes I happen to prefer female singers, almost exclusively, generally-because: I like bobs and veganas. I don't particularly enjoy male serenadation. YMMV