Insulated ducting worth it?

How do I quiet my room? I sleep in the same room as my grow and the fans are a little loud.
During the day is fine, but at night I feel like its all I can hear.
It's not that loud but the air moving is.
Do I need a new fan, a new speed controller, or a insulated ducting to lower the noise?
If I can lower the noise my setup would be perfect.

shit don't come to my house ! I have 12 fans going at once. my advice is get used to it. you wont hear it soon. spend thousand of dollars on quiet fans and it will still make noise.

No one else got any ideas?

Maybe I should stick to 1 hood or no hoods and just extract from tent and not hoods?
Insulated ducting?
non inlines fans?
less or more ducting?

I would try inslating the walls first

very few homes have the interior walls inslated , Inslation acts as a soundproofing

Ensure the fans are ballanced and the bearings are good , some need to be oiled , Inslated ducts could never hurt

Insulated ducting helps a lot, I also use 8" insulated duct on my 6" fan with a 6-8" reducer and that works great, insulated duct is pretty bulky tho, not as easy to fit in a tight tent

I have found that the noise from the fan itself, and from the 'whoosh' of the intake and output
of the ducting makes more noise than the air running through the ducts itself.

Insulated ducting does two things...

1) It cuts down on radiant heat ie;keeps heat from the hot exhuast air travelingbthrough it from radiating out.

2) Cuts down on noise of air rushing afound inside of it.

Now,if you can,I would suggest using oversized insulated ducting ie; 6" insulated ducting for a 4" fan,8" insulated ducting for a 6" fan,and so on.

The reason being that when using oversized ducting you are reducing pressure losses and therefore getting better/less impeded airflow while dropping/reducing the velocity of the air moving in the ducting therefore reducing even more of the noise moving in the ducting.

Yes most likely your duct work is restricted ,as most due here , because you don't no how to size your duct work to your fan properly ,and neither does the guy in your hydro shop. ,but fan isolation is also something you can due ( rubber mount the fan( , the other is install a continuator (sound trap) ( silencer ) made to deaden sound from fan and air traveling through duct work.....................good luck Sleep on it

Well

I have insulted ducting now and I have to admit it works wonders.

I used 2 25FT Insulted R8 Silver Ducting 6Inch with a 6Inch inline (I know I was suppose to go with 8inch but its WAY too large (It was like 14In total with insulation)

Anyway it's whisper quiet in my apartment now, so whisper quiet in fact that I now have two issues.

1. My ballast fan is 10x louder than anything in my room at the moment (Besides PC fan on 100%) my new ballast that I got in the mail a few days ago (RMA'd both my Ipowers even though they work, for the new units they are producing)
well, the new units come with a high powered fan, something the old units didn't, and the RMA team didn't tell me. Now my ballast are like supercharged inline fans.

2. My Neighbors above me have a A/c that makes me want to give him car audio dampening foil (I used it on my A/c and it also did wonders)

Granted my room is now quiet and I sleep good, but its not summer so my A/c is not on.
I did however pick up some audio dampening foil that is made for cars, for my A/c. I put it all over the a/c very tight and snug, even cut holes for the vents. (My A/c is shiny and silver now lol) and it makes little to no noise now, compared to before. It sounded like a car engine because of the vibrations on the metal window frame.

My temps are stable at 80F in veg, Humidity stable at 40%, sound stable at minimum.
I'm ready to grow a forest! Check out my grow in sig.