


This has been interesting.
A little adventure in psycho-acoustics.
Over the weekend during my CD buying session, I picked up a copy of Octavarium by Dream Theater. On the whole I quite like Dream Theater. I understand a lot of the criticism of their widdleywiddleywiddley solo excesses, but I'm a sucker for odd time signatures and experimentation in general.
Overall they are probably a little too heavy for my tastes, and though I would never slavishly consume everything they do, I am a big admirer of Mike Portnoy's drumming and I think Jordan Rudess is an extremely talented keyboard player.
Anyway, I digress, and I haven't even started yet. So due to the fact that I have little time to sit down and put CDs on during the week, my first audition of this disk was in the car. This isn't as bad as it sounds because my new car has a very nice Bose sound system, complete with a reasonably restrained subwooffer (I.e. the whole car doesn't honk with the bass like I see so often with many car audio systems).
I don't know the album well enough yet and as I wasn't checking the liner notes while driving (not a great idea on the whole), I can't tell you which track it was that was playing, all I can say was it contained one of those "wall-of-sound" moments with an infinite amount of distorted guitars panned uniformly across the sound-field building to a crescendo.
Except it didn't.
And this is the strange thing. I don't know how far the mastering engineer has pushed this particular release (quite a lot I suspect, as it is significantly louder than Radio 4 - for you Non UK people BBC Radio 4 is mostly speech and isn't particularly compressed, and it is actually a good benchmark of relative loudness. A moderately loud mastering job just sounds loud compared to Radio 4. A really hot mix has you reaching very quickly for the volume control when you pop a CD on!)
So, back to this wall of sound crescendo. Actually in the car environment on the motorway at around 70mph (possibly a bit more) with the volume cranked pretty loud, it actually appeared to get quieter! In the context of the mastering job, there was really nowhere for the music to go dynamically. And it had already reached the RMS limit the mastering house had set... So the crescendo just wasn't there. BUT, because contextually you could hear that it was supposed to , my brain actually interpreted the lack of increase as a decrease.
I'm not sure this is repeatable perhaps it has something to do with the fact that my car is not extremely quiet - 2 litres of Italian sportiness , but I'll certainly have another go, but nonetheless, it's an interesting exercise in psycho-acoustics.
We sat around the record player with a stack of records. Kids today have no idea about this ritual. Nowadays it's all MP3's and playlists. Back in 1979, we had a mono record player and 7" vinyl.