room acoustic treatment

[peeves24]

i have a room 4 meters high, 3 meters wide and 5 meters long. one of the long walls is made from bricks, the opposite side is wood (single wall). both ends are concrete. half of the floor area has carpet. i have my drums setup there and i get accentuated mids and it really hurts my ears even with light tapping on the snare.

im not going to sound proof the room, i just want to remedy the mids. bass traps are for bass freq, are there mid traps?

i recorded my snare drum and using a spectrum analyzer and a parametric eq (adobe audition) i managed to get the offending range from 4.5k to 6k. what kinds of materials should i use to lessen these freq.

i bought heavy drapes from divisoria to cover all concrete and brick walls but i dont know if it would be enough.

i use ear muffs when practicing 

[demet]

egg cartons...use it one the concrete wall and the brick wall...that echo from concrete walls is really annoying and matining!

[skunkyfunk]

egg cartons...use it one the concrete wall and the brick wall...that echo from concrete walls is really annoying and matining!

Egg cartons are the biggest myth in acoustic treatment. The convoluted surface seems logical but they don't offer much in the sound absorption department, unless you stack like 20 layers of it.

Anyway, you need a lot of trapping - corner traps, and traps for the walls.  The number one reason why square rooms suck (including the ceiling and floor) is the standing waves that produce resonant frequencies that are intrusive with the actual sound of the instruments, hence the flabby bass notes.

[mikep]

If you have mid frequency problems, put acoustical tiles, 1/2" in your ceiling.  They are available in some hardware of those Depot stores.

FWIW

[abyssinianson]

errata: egg cartons do not work because the sound absorption properties of the compressed paper fiber is about as useful as using sheets of newspaper to double as sound absorption media. Use thick, denser foam, placed at specific places around your room. You can also have recessed and linen panels placed around the room to cut down on reflections against your walls. for help, resources and procedures you can do to tune your space go to:http://forum.studiotips.com/index.php

It is inaccurate to say that flabby notes are caused by standing waves because standing waves can either mean one of two things happening at a given time - a bass note is a resultant of constructive or destructive interference - with more emphasis given to the former definition. As such, it would be more accurate to assert that flabby notes are caused by frequency phasing, a form of destructive interference, where the wavelength you are getting, if measured, is composed of  one or two waves of different amplitudes and wavelengths. A standing wave, a true standing wave, should not manifest interference at all. This is best illustrated when you have a tight and focused bass note, free of odd-ball transients.

just my 2 cents.

[peeves24]

thanks guys!

im going to look for those acoustical tiles today. i already put up the drapes last night. nag iba na yung tunog nung room. deader than usual pero masakit pa rin sa tenga yung snare & cymbals which sound very pleasing if i play anywhere but inside my drum room. comment ni ermat "sinong ibuburol dito?" mukha kasing drapes ng funeraria kapag may burol buti na lang hindi maroon yung binili ko

i just wish the tiles are not heavy. i dont think the ceiling can hold. panibagong gastos na ulit sa frame pag nagkataon

[KitC]

I think you should try locating the drums in a part of the room where it sounds best. Something tell me it's too close to a wall. You can also try making some isolation gobos to control the sound a bit, if soundproofing the entire room isn't an option. IMO, drums sound better in the 'live' portion of the room. Putting it in the dead portion kills the ambience that makes drums come alive. Try whacking the snare while holding it and walk around the room until you find the spot it sounds best, then position the entire kit there.

[s2ry0fdyr]

sir. what other materials can be used?

[abyssinianson]

sir. what other materials can be used?

you can use foam and baffles made using wood and heavy cloth mounted on a frame.