Acoustic guys care to help me out?

[professorlamp]

Right so I'm doing an assignment on acoustics where I've been asked to design a room to a certain spec etc...

Everything is going fine and dandy until I draw up the door in CARACAD (acoustic room emulation software) and it shows me this fucking ugly dip in the midrange

What the HELL, is causing that dip? I've looked around sites looking at coefficients of doors and the acoustical properties which is tantalisingly boring btw, and still am no closer to my answer.

anyone care to chime in

 

[Wisheraser]

Is that the only door you can pick?

 

[egan.]

Just a wild guess that it would be the resonant frequency of the door.

 

[professorlamp]

@egan, that seems like the most likely answer, cheers

@wisheraser, that's the only door sadly, I could probably change the material of it but I've already written about the rest of its properties

 

[Nebulous]

Are you disigning with double doors and sealed edges, or single door?

 

[kev]

Take out the door, put a ladder entrance in ala the batcave/fireman style and then own.