Thread: sound proofing

I still maintain any of the perforated sheets reduce the absorption of your material.
However in a well designed combination they are very usefull.
remember the chill out dunga requires several things of its structure and the amount of interior absorption required would not be great compared to other needs.
Ther may not seem to be any reverbiration but there will be some there. It would be unwise to make such a room totaly dead acoustcaly as that in its self can be very unpleasant.

It is important to understand we are looking a three different material properties when considering acoustic control.
Difusuion, breaking the sound up so it isn't focused & coherant.
Absorption, preventing the sound from being reflected.
Transmission (the prevention of), preventing the sound from going further.
Most wall materilas will have all three properties an varying measure.

In acoustics nothing is as simple as it appears. Thing change with frequency and materials behave very differently in combination.

simplified
difusion
If it isn't flat it will difuse sound. bIgger the the variation from flat the more difusion. Small variations are effective at high frequencies but very big variotions are needed to be effective at low frequencies.
eg, corigated iron will difuse ( some ) sound in high frequencies but at low frequencies it appears flat.
absorption
if it is soft it wil absorb. the softer it is and the more open its texture the better it will absorb. Some mass is meeded in the fibres or structure of the soft stuff. Absorbers need to be thicker to absorb low frequencies.
transmission
A continuous surface and high mass are the things required for transmission reduction.

The above combined are far more effective than any alone.

that wil do for starters.
consider carpet.
how is it in relation to the above.
consider the sheet steel sandwedge of the chill room.
perforated corigated, absorbent stuffing and sheet outer.

cheers

well so far i'v lined the main wall with insul. batts,really stuffed them in thick, got a ute load of old ones for free, man that was the dirtyest job i'v done for some time, then to seal that stuff off i layed over it some foil blanket , the one recomended for walls...well, it's made a huge difference, i grabed a long piece of timber , stuck it in the thicknesser and ran outside and stood behind the wall, cool , i could actually speak at normal voice and still here my self, it was about the equivilent of standing infront of the machine and then putting earmuffs on , still noisy but not loud and disturbing...works for me

next job is too line the wall with something, mdf sound good, and to insulate the other walls and ceiling, think i'll just buy some batts this time, that old stuff was a shocker...

Ahh now you see.
Sheeting up will improve your transmission loss but will reduce your absorption.
Sheeting up is probably the go, bit make yourself some absorber panels too.
Either stand them up as partisions, moint them on the wall of hang them from the cileing.

All that is needed is a frame, pine studs will stuff it with some bats and cover with fabric. you may need to do something to retain the bats like sandwedge it between some mesh or salts. I using fibreglass you may want to sheet it in with plastic of foil befor upholstering.

alternately
grab some thin sheet ply or whatever glue some bats to it then upholster it like a seat cussion.

good work
cheers

Any effective solution won't be cheap. If its a rental Im not sure I'd waste the money. Try using hand tools and getting in touch with your dark side.

Egg cartons.... how many eggs can you eat Cool Hand Luke?

Originally Posted by Cliff Rogers

Egg cartons.... how many eggs can you eat Cool Hand Luke?

How many eggs did Luke actually eat?

Movie folk lore says that Newman did the lot himself.....must have made him as sick as a dog.

A pretty good movie i reckon.

50

La Huerta!

Don't forget to make a record of all you've done including all the time and money you've spent to accommodate your neighbor. If he continues to complain, this might mitigate his position.

On the subject of sleep, I've found that quality of sleep is much more import than quantity. When I was but a lad and working nights in a computer room whilst going days to university (in the 1960's), many times I went on less than 2 hours sleep a day. This is NOT recommended and I couldn't do it today at any price, however. About 6 years ago, I had some health problems that were eventually diagnosed as sleep apnea. Did a night in the sleep clinic and they found I slept and woke over 150 times in 7 hours. There was NO rest in that. They fitted me up with a device called a CPAP (continuous positive air pressure) with a mask. Now I sleep better than a baby despite being in my mid-60's.

More than you asked and probably more than you wanted to know, but there's a chance that your neighbor has sleep problems; so your having taken steps to accommodate him are commendable. As others said better than I can though, don't give up your rights if he persists.

HTH
the rabbit

thanks for sharing rabbit, i do have respect for people who around here, and also i don't live in this house alone so i'ts not far on them either, the batts are working and i'm trying to use power tools only when i have to...


9fingers, i think i'm crossing over to the dark side, becoming one of you, with all these problems with noise , i have begun to turn towards hand planing, still got to use the essential machines but atleast half of my usuall noise is stoped by the use of the hand plane, and hardly any dust now too, oh and i really like the old finish i can get compared to the belt sander...

funny how a problem can lead one on a different path...