hi guyz my first thread

[Mostafa Durst]

hi everybody first and because of its my first message i like to thanks everyone for this awesome .com its really helpfull i guess i had a usefull sound engineering course from here and it helped me develop my muisc and mixing so that it became looks very professional making my friends says hey there a new Amro Diab is coming "the mideast pop star"

So.....many guyz here in Egypt want me to record and mix their own songs ... you know i learned on myself now its time to expaaaaand
i took a place "just today " and i hope it will be STAR LINK STUDIO in one month.
the place is under construction about isolaating and absorbation and these staff i landed on fiberglass but i want to use the studio advantage of being under constraction and build the recording room with massive walls i know its about room inside room but im not sure of what between the the walls or wht space should be between them.

sorry for any english mistakes and thanks again guyz

 

[RICK FITZPATRICK]

i took a place "just today " and i hope it will be STAR LINK STUDIO in one month.

Not if you build a room within a room. Maybe SIX months if you are lucky. And thats not counting the planning, and permit process........you do have permits don't you?

I think you need to read this. You MIGHT get a inkling what it takes to REALLY build a small CALCULATED room within a room. Reality can be an eye opener sometimes.
http://forum.studiotips.com/viewtopic.php?t=107&start=0
Here is another
http://www.johnlsayers.com/phpBB2/viewtopic.php?t=2921&start=0&sid=7b137bd6fe2ec2f0fa470b4631852155
If you can absorb what these people are telling you, in a week, plan in another week, order materials and have them delivered in another week, and build it in another week you will meet your goal. ..btw, did I mention the first site is 130 pages long The second is 30 pages. Between the two, just to read them will take an enormous effort, not to mention getting a handle on the REAL concepts. Did I mention CALCULATIONS?? Good luck to you.

Oh, wait, when you say "room within a room", you do understand that to truly be a room within a room, the interior room has to FLOAT(decoupled), don't you?
Oh, and pardon my manners. Welcome to the bbs.

 

[Mostafa Durst]

You were right about the enormous effort and the real concepts too but you may noticed that the two topics were sent by drumers players and in fact im not recording any life drums i only record guitars, violin, organs and vocal in life "thanks to FruityLoops" so i think i dont need that super high isolating and noise prevent factor rather than i need the absorbation and standing waves prevention or unwanted echoes to happen in my recording room and i use midrange absorbers "for high frequenceys" and bass traps for low ones all made by rigid fibergalss boards for doing this

i only thought about mass because the walls still on naked bricks so maybe if i added another even thin wall paralleled to the existed one "OFCOURSE not attached to it or it will be like scratching your right ear with your left hand " will prevent some of the sound and give me the feelling of you are in your own world. so simply is there a particular space should be between the paralleled walls

and about the permit the only papers i have for my studio is my business cards but dont worry my uncle he s a subminister will be my FIREWALL at least for the begaining Plus the first year of any project is free of taxes here

 

[RICK FITZPATRICK]

You were right about the enormous effort

i only thought about mass because the walls still on naked bricks so maybe if i added another even thin wall paralleled to the existed one

Transmission loss is frequency related. In reality, it is LOW frequency that determines the RATING of the wall you need to build. The only way to know that is measure the LEVEL of the sound on the interior, and then measure it on the exterior and a given distance from the boundary.
Hello Mustfa. Ok, think about this. Doubling mass produces a theoretical MAXIMUM increase of 6db transmission loss. In other words, IF this wall had a Transmission loss of 35db at 125hz. By adding mass TO THE EXISTING WALL whereby its mass DOUBLED, then you MIGHT have a TL of 40 if you were lucky. However, you might move the coincidence frequency to a lower frequency, it may transmit with no problem.

Adding a a new wall paralell with an existing wall MAY improve the transmission loss to the space DIRECTLY behind this existing walla at mid and high frequencs and given enough mass may reduce some lower frequencies. But that is only hypothetical untill you address FLANKING PATHS , which could TOTALLY negate the time and money spent.


Everything related to modifying a space or room to improve isolation is ONLY as good as its WEAK LINKS. Doors, windows, seals, poor mass, airleaks, HVAC ducts, structural flooring, walls and many other things can cause failure in even well thought out plans. Knowledge is your best friend when it comes to HIGH SPL isolation. Knowledge of the existing structure, and knowledge of how sound transmits/propagates, and knowledge of constructing the CORRECT solutions. Man, there is a millinon dollars worth of information on those two sites. Anyway, my only point here is, if you are going to plan on building things to improve isolation, it would be wise to be informed on how to succeed.

However, IF treatment is what you are trying to improve..well, your in the right spot But I don't understand something. If you have bass trapping, and broadband absorption already, what seems to be the problem with the acoustics?


Remember weak links.

fitZ

 

[Mostafa Durst]

[If you have bass trapping, and broadband absorption already, what seems to be the problem with the acoustics?]

YOU MEAN I CAN ABANDON THIS MASS SHIT BY USING THE ABSORBATION BOARDS...? oh plz say yes, i know you ll tell me no mustffa mass has a great effect IF YOU ONLY DID IT THE RIGHT WAY,i m willing to find it. you know i dont want to come back and say... oh i hope i did it like this.
i ll come back and study the two sites you mentioned with more pation* and if you just describe what you mean by (FLANKING PATHS) and ( measure the LEVEL of the sound on the interior, and then measure it on the exterior and a given distance from the boundary. ) you mean by the interior and exterior the sides of the existing wall ?
and thanks for the effort man cause im only musicion after all thats started studying sound engineering from only two weaks no lies even my absorbation boards a friend do it for my room from along time

 

[RICK FITZPATRICK]

YOU MEAN I CAN ABANDON THIS MASS SHIT BY USING THE ABSORBATION BOARDS...?

Huh? IF all you need is acoustic improvement, Yes you can abandon adding mass, IF you want isolation, then NO. Mass and decoupling are the prime ingredients. I didn't saiy anything that implied ACOUSTIC TREATMENT materials will improve your "soundproofing" I tried to explain to you in the first post, that you are going to have to read. Read those sites. Simply placing another layer of mass, such as bricks over another brick wall, may add very little to the soundproofing of the whole space. If you are adding a complete inner DECOUPLED 2nd LEAF, thats a whole different ballgame. Thats why I suggested those sites.

Mustafa, frankly, your statements regarding opening in a month do NOT correspond to building a MASS AIR MASS, two leaf inner envelope. If you want to know what I'm talking about, you will have to read those sites. Good luck

fitZ