Post by mikkalys on Mar 7, 2017 18:49:30 GMT
Hello everyone!
I have just joined the forum and am very happy to be here. My name is Matic and I live in EU, Slovenia. I am 30 years old and I work as a hearing healthcare professional, hearing aids to be more precise.
I am not a total novice when it comes to acoustics and have read mr. Winer's articles and posts, forums, years ago when I treated my previous room on a very tight budget. But that got better now so I have decided to try again and make things more efficient.
Room description:
I have just moved my mixing setup to an empty attic room. I have posted pictures with dimensions, wall types and what is behind them (@bedroom for example).
Room pic 1
Room pic 2
Room pic 3
Room pic 4
I tried to find as many threads about angeled/slanted ceiling and noticed that the question of »where to face the mixing position?« was majorly anwsered with »so you face the lower wall« and did so myself too as you can see from the pictures.
The mixing postion is centered on the front lower wooden wall. I found this position to be the most symetrical, same goes with the couch in the back.
Rear brick wall is dented in where the door are. Left from the door there is a brick chimney (not in use, and this might not be relavant).
The door are really thin and lead to a huge stairway.
Cieling and front wall are wooden (ship lap) and behind/on top there is about 4” of fiberglass. I have taken a picture of that too. Behind the front wall and the fiberglass, there is a triangular cavity but I can not access it, so putting extra fiberglass in it is not an option.
Fiberglass on top of the cieling
Triangular cavity behind front wall
Side brick walls produce really obvious flutter echo when i try to clap in the mixing position. Using pyramid foam helped but that's just »first aid« before I put in decent treatment. I have removed the foam from the room before measurements, same goes with furniture I won’t use.
The floor is carpeted with thin material. On top there is also a thicker blue carpet. I cant really do much here than to remove the blue carpet since I know the reflective floor would be a better idea. Carpeted floor I have is really thin and there is a wooden panel underneath that leads to the kitchen downstairs.
There is also a window on the side wall corner in the room that is facing the door. I had the curtain over it when I took pictures. Also there is a “radiator” underneath the window.
The speakers, TV, couch is what I wish to keep in the room. Everything else comes after acoustic treatment. So what I want to say is - sound is king. I am not doing any drastic house reconstruction but am willing to do my best with making effective absorbers and diffusors and placing them as optimally as possible, making the room suitable for mixing music in a DAW.
Measurements:
I measured the room using REW and Behringer ECM8000 microphone which I placed symmetrical to both speakers, ear level and in the mixing position. The state of room was as on the pictures.
I took measurements from:
I have posted only a picture of whole frequency spectrum, but have attached the measurements file in the thread, so you can have a quick peak at the waterfall etc. I also named the measurements in the file. I can do more screenshots too.
REW screenshot
Link to measurements file: www.dropbox.com/s/fpl1zgtqcxnzro2/Mikkalys_REW_2017.mdat?dl=0
The plan:
Idea:
So the idea is to make DIY acoustic treatment for this room. I have read about the types and shapes of absorbers and diffusors and how to place them, but I would still like an expert opinion and advice. I will do my best to do as told and report back so this thread can be useful for others too.
Type, shape and position
I am not sure how big my bass traps should be, also the shapes and types. I am not sure if I should use triangular shape for the corners and wall to ceiling corners or straddle them. I also wonder about where to place them. The 100% carpeted floor is making me worry of going towars "dead room". As I’ve said before, I am willing to make space sacrifices. I also have a guy that is really good with wood crafting so he can help make any kind of shapes and forms of the traps. The thing is he doesn’t know anything about sound and how to make bass traps or diffusors, so I need some good examples that I can show to him. If you have any good DIY acoustic treatment links (can be more “advanced” and expensive too) please share. The more detailed explanation to the craftsman, the better the result I guess.
The right material
I also need help with finding the right material, since I am from EU and cant get my hands on the 705 etc. I also decided to use rockwool. When I called the local supplier they didn’t know anything from what Ive asked (they are poorly informed). I read that the 705 has density of 90kg/m3, so I took that as a reference, but the technical specs of the rockwool my local supplier are different from the ones I found in Ethan’s articles. I’m not really sure how to convert those calculations to fit Ethan’s. I added a data sheet of the rockwool I am looking at here. I want to be careful so I don’t buy something that is not as effective. The manufacturer is Knauf and what I did find out is, that the DP-8 series could be the right one…
Rockwool specs Im looking into
So in short, I am asking for advice about the quantity, type, size and shape of the bass traps and diffusors and where to position them. It doesn’t need to be minimal budget DIY and I have a capenter to help me too, so complex shapes are not a problem, but I need good examples on "how to make bass traps, diffusors etc." to show to the carpenter since he is not skilled in acoustic treatment making but will do them well with the right info.
Every other kind of advices and comments are welcome too.
Thank you for reading and participating!
Mikkalys
I have just joined the forum and am very happy to be here. My name is Matic and I live in EU, Slovenia. I am 30 years old and I work as a hearing healthcare professional, hearing aids to be more precise.
I am not a total novice when it comes to acoustics and have read mr. Winer's articles and posts, forums, years ago when I treated my previous room on a very tight budget. But that got better now so I have decided to try again and make things more efficient.
Room description:
I have just moved my mixing setup to an empty attic room. I have posted pictures with dimensions, wall types and what is behind them (@bedroom for example).
Room pic 1
Room pic 2
Room pic 3
Room pic 4
I tried to find as many threads about angeled/slanted ceiling and noticed that the question of »where to face the mixing position?« was majorly anwsered with »so you face the lower wall« and did so myself too as you can see from the pictures.
The mixing postion is centered on the front lower wooden wall. I found this position to be the most symetrical, same goes with the couch in the back.
Rear brick wall is dented in where the door are. Left from the door there is a brick chimney (not in use, and this might not be relavant).
The door are really thin and lead to a huge stairway.
Cieling and front wall are wooden (ship lap) and behind/on top there is about 4” of fiberglass. I have taken a picture of that too. Behind the front wall and the fiberglass, there is a triangular cavity but I can not access it, so putting extra fiberglass in it is not an option.
Fiberglass on top of the cieling
Triangular cavity behind front wall
Side brick walls produce really obvious flutter echo when i try to clap in the mixing position. Using pyramid foam helped but that's just »first aid« before I put in decent treatment. I have removed the foam from the room before measurements, same goes with furniture I won’t use.
The floor is carpeted with thin material. On top there is also a thicker blue carpet. I cant really do much here than to remove the blue carpet since I know the reflective floor would be a better idea. Carpeted floor I have is really thin and there is a wooden panel underneath that leads to the kitchen downstairs.
There is also a window on the side wall corner in the room that is facing the door. I had the curtain over it when I took pictures. Also there is a “radiator” underneath the window.
The speakers, TV, couch is what I wish to keep in the room. Everything else comes after acoustic treatment. So what I want to say is - sound is king. I am not doing any drastic house reconstruction but am willing to do my best with making effective absorbers and diffusors and placing them as optimally as possible, making the room suitable for mixing music in a DAW.
Measurements:
I measured the room using REW and Behringer ECM8000 microphone which I placed symmetrical to both speakers, ear level and in the mixing position. The state of room was as on the pictures.
I took measurements from:
- 20 – 22000 Hz
- 20 – 400 Hz
- 400 – 22000Hz
- 20 – 22000 Hz for each speaker individualy
I have posted only a picture of whole frequency spectrum, but have attached the measurements file in the thread, so you can have a quick peak at the waterfall etc. I also named the measurements in the file. I can do more screenshots too.
REW screenshot
Link to measurements file: www.dropbox.com/s/fpl1zgtqcxnzro2/Mikkalys_REW_2017.mdat?dl=0
The plan:
Idea:
So the idea is to make DIY acoustic treatment for this room. I have read about the types and shapes of absorbers and diffusors and how to place them, but I would still like an expert opinion and advice. I will do my best to do as told and report back so this thread can be useful for others too.
Type, shape and position
I am not sure how big my bass traps should be, also the shapes and types. I am not sure if I should use triangular shape for the corners and wall to ceiling corners or straddle them. I also wonder about where to place them. The 100% carpeted floor is making me worry of going towars "dead room". As I’ve said before, I am willing to make space sacrifices. I also have a guy that is really good with wood crafting so he can help make any kind of shapes and forms of the traps. The thing is he doesn’t know anything about sound and how to make bass traps or diffusors, so I need some good examples that I can show to him. If you have any good DIY acoustic treatment links (can be more “advanced” and expensive too) please share. The more detailed explanation to the craftsman, the better the result I guess.
The right material
I also need help with finding the right material, since I am from EU and cant get my hands on the 705 etc. I also decided to use rockwool. When I called the local supplier they didn’t know anything from what Ive asked (they are poorly informed). I read that the 705 has density of 90kg/m3, so I took that as a reference, but the technical specs of the rockwool my local supplier are different from the ones I found in Ethan’s articles. I’m not really sure how to convert those calculations to fit Ethan’s. I added a data sheet of the rockwool I am looking at here. I want to be careful so I don’t buy something that is not as effective. The manufacturer is Knauf and what I did find out is, that the DP-8 series could be the right one…
Rockwool specs Im looking into
So in short, I am asking for advice about the quantity, type, size and shape of the bass traps and diffusors and where to position them. It doesn’t need to be minimal budget DIY and I have a capenter to help me too, so complex shapes are not a problem, but I need good examples on "how to make bass traps, diffusors etc." to show to the carpenter since he is not skilled in acoustic treatment making but will do them well with the right info.
Every other kind of advices and comments are welcome too.
Thank you for reading and participating!
Mikkalys
Seriously, however you can get rigid insulation into the right places is fine. Anything between 40 to 100 kgm3 is fine.