My room has a lisp?!?

[RezN8]

I was doing some drum mic tests the other day and noticed sibilance on the overheads. At first I thought it was a mic phase problem, but it's still there in solo.
Is it possible that the room itself is causing this problem?

Tnx. -Rez

 

[Ethan Winer]

Rez,

> Is it possible that the room itself is causing this problem? <

You bet. The main cause of severely skewed response is comb filtering off nearby boundaries. If you put a microphone within a few feet of a reflecting wall or ceiling, or have an instrument that close, the result is a series of many peaks and deep nulls. The graph below was measured with a microphone 20 inches away from a standard sheet rock wall. This graph is from the article Recording Spaces I wrote for EQ magazine. There's also a video on my company's web site that explains this phenomenon in even more detail.

--Ethan

 

[RezN8]

Thanks!!!

Ethan- thanks for that awesome response to my post! Very helpful!!! Cheers, Rez