Have you ever noticed the surprising lack of proper acoustic measurements of pro studios out there?

Sure, there’s the odd frequency response buried in a forum thread somewhere, and they pop up on Facebook every once in a while.

But why is it that pro acousticians don’t post more measurements of their work, to market their skill for example?

Although I’m sure there are valid reasons for it (like protecting your IP), one definite reason is quite simple:

The frequency response of the finished room is often far from flat.

And not just because of all the reflections that get created once you put all the gear and furniture back in the room.

In fact there are three acoustics effects that you’ll never be able to get rid of, no matter how bare you keep your room, and how much treatment you’ve done.

Together, they cause havoc across the entire spectrum.

And one of them doesn’t even usually turn up in measurements, although you may still have stumbled across it while messing around with RoomEQWizard: