Can someone please help me with an assignment?

[BriHar]

Great when you can get someone to do your assignments for you.

Would you be willing to pay a dollar a word?

I suggest you drop the course you're doing and take up something else.

[Tom Higgins]

I don't see how much isolation can really be incorporated within a typical home studio (due to size and often financial constraints).

Nonetheless, I suppose that building a room inside a room, floating floors, 2 leaf wall designs and adding extra mass to the walls themselves would increase STL - regardless of the type of studio. I can leave that to you to work out what would be best in each scenario

[xaMdaM]

Originally Posted by BriHar

Great when you can get someone to do your assignments for you.

Would you be willing to pay a dollar a word?

I suggest you drop the course you're doing and take up something else.

You work cheap!

I'd propose at least doubling that for a passing grade... and proportionally charge for each grade above passing.

[avare]

Originally Posted by doeycrack

Hi,
I have a studio design assignment that i am currently working on and I am stuck on a question in regards to transmission loss.

I have been trying to research this and figure it out on my own but i can't seem to find any information that helps me very much. I thought perhaps someone here could provide some insight.

The dimensions of the room are:
Height 3.2m
Width 4.8m
Length 6.5m

The walls are made of 12mm plasterboard on studs and the ceiling is made of 12mm suspended plasterboard. There is a 2m x 1m wooden door on the west (4.8m x 3.2m) wall, and a 1m x 2m 1/4" plate glass window and a second 2m x 1m wooden door on the north (6.5m x 3.2m) wall. The floor is made of wood on joists and is 60% covered with carpet.

The question:
The walls of the control room have a Sound Transmission Class rating of STC30. They consist of 12mm Plasterboard on timber studs. In no more than 400 words, outline how the NC rating of the proposed control room can be improved, assuming a home studio budget. Incude specific details on factors that may compromise the NC rating.

Also, the same question again. However, assuming a professional studio budget

Thank you.

A professional project if I ever read one! First of find out why the walls have no layers on the other side of the drywall. Second, teach the client (instructor in this case) the NC relates to noise levels in a room, not what partitons do. Third, determine what how TL is needed. TL is expensive. Fourth, get budget ranges. Home studio can mean a bedroom or a full studio in the basement.

Andre

[gullfo]

Originally Posted by xaMdaM

I'd propose at least doubling that for a passing grade... and proportionally charge for each grade above passing.

wow, you both work cheap! i was going to charge a flat $4K and then send him a copy of Rod's book :-)

[avare]

Originally Posted by gullfo

wow, you both work cheap! i was going to charge a flat $4K and then send him a copy of Rod's book :-)

You were going absorb the shipping costs?

Frugally,
Andre

[gullfo]

Originally Posted by avare

You were going absorb the shipping costs?

it would be the right thing to do when helping a student

[andrebrito]

Andre,


I think what the teacher wants is to relate an external source plus the STC30 and see how is it impossible to achieve a decent NC or NR criteria curve.... and by improving the soundproofing you improve the NC or NR criteria.

my 2 cents lol send a check please

[Syncamorea]

To the OP: The problem's description is vague enough, you'd need to discuss alternative initial assumptions. For example, you have no details about the door ,so at one extreme, you could assume it's a typical home door - meaning leaky as a sieve. So look at various how-to books (and since your $4K payment got you Rod's book, start there...) on optimizing its TL. Ditto on the window.

[avare]

Originally Posted by andrebrito

I think what the teacher wants is to relate an external source plus the STC30 and see how is it impossible to achieve a decent NC or NR criteria curve.... and by improving the soundproofing you improve the NC or NR criteria.

The wording is terrible. Or the instructor does not know what he is trying to ask.

Clearly worded,
Andre

[Rod Gervais]

Originally Posted by avare

The wording is terrible. Or the instructor does not know what he is trying to ask.

Or perhaps the OP is missquoting the Professor..........

The question is impossible to answer without further data.....

Perhaps (in either case) there is no improvement possible- this because there is no background noise whatsoever.......

For example:

The home and pro studio both reside in the middle of a desart - no aminal life- no one within 100 miles of their respective locations - in the middle of a 1,000 mile wide no-fly zone..........

The HVAC is perfectly designed and has a noise level that is below the threshold of hearing - no one else resides at the home- and the studio has a kill switch that disconnects the power to all of the appliances/equipment not directly related to the studio when the studio is in use.......

Essentially the Studios in this case have an NC rating that is only affected by the equipment inside of the space itself - thus nothing can be done in the way of shell construction that would (could) improve the NC rating of the space.

Now - if we assume an outside noise source, and analyze it's effect within the space (this is frequency dependent - and the discussion therefor cannot be simply philosophical in nature) we could then determine (along with an actual goal for the room's NC rating) a course of action......

But - and this is a very important BUT - even if we had all of that information at our fingertips - even if the question had been asked properly- I still would not - for any amount of money - do your homework for you.

That's called cheating, it's unethical - no different than getting a grade by taking the answers from the person sitting to your left (perhaps your right). It also certainly will not help you figure out how to do what it is you're studing to do in life...........

Sorry - but beyond this you are on your own....

Rod

[doeycrack]

Thanks for all of your replies. I Think the lack of data was what was confusing me. I wasn't miss-quoting the professor, I copied the text word for word from the hand out.

Also, I wasn't asking anyone to do my homework for me, nor was i expecting it. I've figured it out now and finished the assignment.

Thank you for your help.