Hello SDM, There are two forms of energy that we all face in small rooms. Low frequency pressure from wavelengths that are not 'fitting" in our room dimensions. Secondly, we have reflections from our room boundary surfaces. Pressure activated devices are Helmholtz resonators, membrane absorbers, and the technology we use which is diaphragmatic absorption. All have different rates and levels of absorption and you must use the correct pressure activated technology to deal with your particular room response issue.
Hi Mark Flaten I do not know what you mean by "golden". If you mean absolute then, there really isn't such a thing. All rooms have some type of acoustical distortion to contend with. The best thing you can do is choose a room size and volume where the treatment needed to correct the room distortions is in proportion to sonic objective of the room, budget, and space requirements for the treatment. We use 17' W x 10' H x 23' L as our break point where room sizes and volumes above and below this point, have a balance in treatment space requirements and cost. Thanks Dennis
+Acoustic Fields so if I have 17' width and 23' length and 10' height of room than how many rock wool panels do I have to place in this room and kindly tell the thickness of rock wool panels as well. somebody told me that place 2" thick rock wool panels on walls and ceilings and use 4"-6" thick rock wool panels in corners. Cover all trihedrals which are 2 in each corner. so a total of 8 trihedrals and than cover the vertical and horizontal dihedrals . Than after that go for ceiling and walls and carpet the floor is this right thing to do.
Hi Dennis, So how we can calculate the room's width, height, and length to avoid big bump under 100 Hz? I saw this is very important, especially at the beginning designing a room's size. Thanks for the video. Rifqi, Indonesia
Hi Rifqi Ikhwanuddin Make sure no dimension in the room is smaller than 14'. If this is not possible, then you will have to use a large amount of treatment. I will be doing a video shortly that states starting room dimensions so stay tuned for that. Thanks Dennis
I enjoyed watch this episode however. What is the correct ratio dimensions. I have a room appropriately 12'×14'×8' high . I also should say this is a hobby for me helping friends.
M, It's not required for our analysis. We have a database of over 150 built and measured rooms. Fill out the information in this link: www.acousticfields.com/free-room-analysis/ Lets take a look at your room, size, volume, usage.
Hi there, thank you for this information. I have tried a few tests in my room and notice from a G1 - F3 sine wave test there are massive volume changes from C#2 - E2 and the only rattle I get is at A1. How do I run an analysis like the chart you demonstrated that shows the bumps in the low end?
A, Do a sine wave sweep of your room and walk around the room with a pressure meter and take measurements. Another easier option is to fill out our room data form so we can compare your room with our database. www.acousticfields.com/free-room-analysis/
hi sir dennis, are there low frequency issues in big spaces like churches, will diaphramatic absorbers help to increase the intelligibillity of the spoken word, how do i determine how many bda should i use, thanks alot.
Hi Tinnitus, Low frequency issues in churches usually occur around the live performers. With drums, guitars, etc. there will always be a need for unwanted pressure management. The biggest issue we see with churches in the high Rt-60 (reflection) times which impact speech intelligibility and music. Unfortunately most churches do not have budget for treatment nor are they willing to cover the square footage requirements on the walls with the proper rates and levels of absorptive material.
Sorry, didn't see the second part. Fill out the information in this link and lets take a look at your situation. www.acousticfields.com/free-room-analysis/
I have very bright sound when I record it sound very clear I was just wondering would carpet make the vocals sound warm as the professionals mixes or is there any way to do that with acoustics treatment
Hi Anthony Williams The brightness you are experiencing in your recordings comes from many sources. It can be attributed to the surface material used in the construction of your room surfaces. Drywall or gypsum board that is a common wall covering is excessively bright. If you have multiple surfaces that are made of "bright" materials, you will need to cover them with the appropriate sound absorbing material. Make sure you choose a technology that has the proper rates and levels of absorption required on each room surface. Contrary to common belief, they are all not the same. Our 2" acoustic foam would be a good starting point given its smooth absorption curve: www.acousticfields.com/product/acoustic-foam/ Thanks Dennis
Hi Anthony Williams How are you? I answered your question in a little more depth in this weeks Google Hangout. You can see your answer here: ruclips.net/video/uXsSnXIzsTI/видео.html Thanks Dennis
If i have ideal size room i.e Width 17' Height 10' and Length 23'. then how many rock wool panels are required to be applied in this ideal size room. how many rock wool panels in trihedrals and dihedrals and than walls and ceiling.
Hi great video finally someone that explains something i could try to understand ... I just measured my room and its (Width: 13.1 feet) and (Length: 11.5 feet) and (Height: 9.2 feet) What my huge problem is i have a bump of +10dB at around 115-120 hz and a bump of +8dB around 50hz. But the thing is i cant hear the 120 hz frequency while im mixing but when i listen to my mixes on a car stereo it sound extremely bassy! What can i do? Thanks a lot in advance!
MX The 50 Hz. fundamental produces 100 Hz. 150 Hz. 200 Hz. .... harmonics. If you treat the 50 Hz. correctly, your harmonics will be less of an issue. You must treat the room for 50 Hz. Fill out the info in this link. Attach pics of all room wall surfaces. www.acousticfields.com/free-room-analysis/
@@AcousticFields Thank you so much for the super fast reply i never expected so get one so soon! :) However i made a huge mistake when i was looking at the frequencies, its more closer to 60hz and not 50hz (sorry for that!)
Good day... (I'm new here) Please tell me - how should I choose the dimensions of a room that's basically 2 rectangular rooms in one(say an imbalanced 'L' shape)? Do I average the room dimensions creating a regular room? The room also has protruding columns about 18'' from 2 of it's corners(& a sine wave concrete ceiling) - does that matter? Should I cater to those imperfections as well? I also did an sound test & my room has a sharp 45db or so drop in output from about 45Hz down to 20Hz - what would you suggest I do to improve response in that area? Thanks...
Hi Marvin, I will need much more information to assist you. Go to this link and fill out the information requested. Photos of all room boundary surfaces are always a good idea to include with the room form. www.acousticfields.com/free-room-analysis/
My home theatre room is worst possible dimensions for standing waves and interference, with it being WDH of 15.7 x 15.7 x 7.85 (4.8m x 4.8m x 2.4m). So perfect square with height exactly half the square width. Means all standing waves perfectly line up. Builders hadn't a clue about audio obviously...
Yeah ideally a purpose room built for sound, with perfect ratio, no windows, panels and all the stuff would be a dream. In real life we have normal rooms that we have adapted to become listening spaces. I went through a similar low freq bump; I didn't change the room dimensions, I experimented with speaker height location, seating placement, simple absorption materials like rugs, frames. It 's not perfect, but have no high bumps or deep divs. People do your search and start with the Harman room calculator, it's free or a REW and a good mic like the U-Mik. Start with basic and simple adjustments, get to know how sound waves behave, how construction materials influence on sound and reflections. Then go all the way up to DSP's, multiple subs, absortion frames, accoustic panels and all that stuff.
This is one methodology to use. Howerver, it will not assist you with obtaining the highest resolution possible which is our mission statement. We are not interested in compromises.
+Joao Paulo Oliveira Go to this link:www.acousticfields.com/free-acoustic-treatment-room-analysis-tell-us-room/. Fill out all the required information and submit. I will give you some size and volume options to consider. Dennis
@@AcousticFields I think I've done all I can without sacrificing even more space in that room. 8 gik 244 broadband bass traps in all corners. Huge heavy coutch, acustic panels on all reflection points. And I still have a low end kick in the face trouble. Plus, my wife already hates how I have the room setup!. Lol
R, LOL. I wish it was as easy as that. I hate glass in any critical listening environment but would change my mind if I could open a window and smooth out low end response.
That is because you must match the usage of the room to the dimensions. There is no one size fits all. Those that look for generalizations and a one size fits all will never achieve the highest resolution possible. This is not an easy science. It has many variables.
Yea a rule of thumb or indications of decent dimensions may been of use instead of banging on about W H L. with no context. I could make a tutorial saying rockets need fuel, does not mean i've given you any decent information on building a rocket does it. This is what they mean when they say oxymoronic. To be honest it Is all a con, i've set up two studios so far and my production sounds ok when played back on multiple systems from mobile phones to a fully mono blocked and bi amped high end hifi. If it sounds good in the room when treated, it sound good everywhere else - JUST TURN IT DOWN !
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What are the "pressure activated devices" you mention as the solution to treating the bump in this video?
Hello SDM, There are two forms of energy that we all face in small rooms. Low frequency pressure from wavelengths that are not 'fitting" in our room dimensions. Secondly, we have reflections from our room boundary surfaces. Pressure activated devices are Helmholtz resonators, membrane absorbers, and the technology we use which is diaphragmatic absorption. All have different rates and levels of absorption and you must use the correct pressure activated technology to deal with your particular room response issue.
So in the end, which kind of materials are used to absorb the fundamental 60hz frequency? Thanks!
MX, Our ACDA-10 series will assist you with this frequency.
So what exactly is the 'ratio' referred to?
What ratio do you use as the golden ratio. If you built the ideal room what would its dimensions be?
Hi Mark Flaten
I do not know what you mean by "golden". If you mean absolute then, there really isn't such a thing. All rooms have some type of acoustical distortion to contend with. The best thing you can do is choose a room size and volume where the treatment needed to correct the room distortions is in proportion to sonic objective of the room, budget, and space requirements for the treatment. We use 17' W x 10' H x 23' L as our break point where room sizes and volumes above and below this point, have a balance in treatment space requirements and cost.
Thanks
Dennis
+Acoustic Fields so if I have 17' width and 23' length and 10' height of room than how many rock wool panels do I have to place in this room and kindly tell the thickness of rock wool panels as well. somebody told me that place 2" thick rock wool panels on walls and ceilings and use 4"-6" thick rock wool panels in corners. Cover all trihedrals which are 2 in each corner. so a total of 8 trihedrals and than cover the vertical and horizontal dihedrals . Than after that go for ceiling and walls and carpet the floor is this right thing to do.
Hi Dennis,
So how we can calculate the room's width, height, and length to avoid big bump under 100 Hz? I saw this is very important, especially at the beginning designing a room's size.
Thanks for the video.
Rifqi,
Indonesia
Hi Rifqi Ikhwanuddin
Make sure no dimension in the room is smaller than 14'. If this is not possible, then you will have to use a large amount of treatment. I will be doing a video shortly that states starting room dimensions so stay tuned for that.
Thanks
Dennis
I enjoyed watch this episode however.
What is the correct ratio dimensions.
I have a room appropriately 12'×14'×8' high . I also should say this is a hobby for me helping friends.
what do you think of Sonarworks measurement ? is really worth?
M, It's not required for our analysis. We have a database of over 150 built and measured rooms. Fill out the information in this link:
www.acousticfields.com/free-room-analysis/ Lets take a look at your room, size, volume, usage.
What is an example of a PAD?
Hi there, thank you for this information. I have tried a few tests in my room and notice from a G1 - F3 sine wave test there are massive volume changes from C#2 - E2 and the only rattle I get is at A1. How do I run an analysis like the chart you demonstrated that shows the bumps in the low end?
A, Do a sine wave sweep of your room and walk around the room with a pressure meter and take measurements. Another easier option is to fill out our room data form so we can compare your room with our database. www.acousticfields.com/free-room-analysis/
hi sir dennis, are there low frequency issues in big spaces like churches, will diaphramatic absorbers help to increase the intelligibillity of the spoken word, how do i determine how many bda should i use, thanks alot.
Hi Tinnitus, Low frequency issues in churches usually occur around the live performers. With drums, guitars, etc. there will always be a need for unwanted pressure management. The biggest issue we see with churches in the high Rt-60 (reflection) times which impact speech intelligibility and music. Unfortunately most churches do not have budget for treatment nor are they willing to cover the square footage requirements on the walls with the proper rates and levels of absorptive material.
Sorry, didn't see the second part. Fill out the information in this link and lets take a look at your situation. www.acousticfields.com/free-room-analysis/
I have very bright sound when I record it sound very clear I was just wondering would carpet make the vocals sound warm as the professionals mixes or is there any way to do that with acoustics treatment
Hi Anthony Williams
The brightness you are experiencing in your recordings comes from many sources. It can be attributed to the surface material used in the construction of your room surfaces. Drywall or gypsum board that is a common wall covering is excessively bright. If you have multiple surfaces that are made of "bright" materials, you will need to cover them with the appropriate sound absorbing material. Make sure you choose a technology that has the proper rates and levels of absorption required on each room surface. Contrary to common belief, they are all not the same.
Our 2" acoustic foam would be a good starting point given its smooth absorption curve:
www.acousticfields.com/product/acoustic-foam/
Thanks
Dennis
Hi Anthony Williams
How are you? I answered your question in a little more depth in this weeks Google Hangout. You can see your answer here:
ruclips.net/video/uXsSnXIzsTI/видео.html
Thanks
Dennis
If i have ideal size room i.e Width 17'
Height 10' and Length 23'. then how many rock wool panels are required to be applied in this ideal size room. how many rock wool panels in trihedrals and dihedrals and than walls and ceiling.
+Concept The Band Please fill out the information required in this link: www.acousticfields.com/free-acoustic-treatment-room-analysis-tell-us-room/
Hi great video finally someone that explains something i could try to understand ...
I just measured my room and its (Width: 13.1 feet) and (Length: 11.5 feet) and (Height: 9.2 feet)
What my huge problem is i have a bump of +10dB at around 115-120 hz and a bump of +8dB around 50hz.
But the thing is i cant hear the 120 hz frequency while im mixing but when i listen to my mixes on a car stereo it sound extremely bassy!
What can i do? Thanks a lot in advance!
MX The 50 Hz. fundamental produces 100 Hz. 150 Hz. 200 Hz. ....
harmonics. If you treat the 50 Hz. correctly, your harmonics will be less of an issue. You must treat the room for 50 Hz. Fill out the info in this link. Attach pics of all room wall surfaces. www.acousticfields.com/free-room-analysis/
@@AcousticFields Thank you so much for the super fast reply i never expected so get one so soon! :) However i made a huge mistake when i was looking at the frequencies, its more closer to 60hz and not 50hz (sorry for that!)
Good day... (I'm new here) Please tell me - how should I choose the dimensions of a room that's basically 2 rectangular rooms in one(say an imbalanced 'L' shape)? Do I average the room dimensions creating a regular room? The room also has protruding columns about 18'' from 2 of it's corners(& a sine wave concrete ceiling) - does that matter? Should I cater to those imperfections as well? I also did an sound test & my room has a sharp 45db or so drop in output from about 45Hz down to 20Hz - what would you suggest I do to improve response in that area? Thanks...
Hi Marvin, I will need much more information to assist you. Go to this link and fill out the information requested. Photos of all room boundary surfaces are always a good idea to include with the room form. www.acousticfields.com/free-room-analysis/
Thanks... =]
excellent explanation
L, Thank you for your support.
My home theatre room is worst possible dimensions for standing waves and interference, with it being WDH of 15.7 x 15.7 x 7.85 (4.8m x 4.8m x 2.4m). So perfect square with height exactly half the square width. Means all standing waves perfectly line up.
Builders hadn't a clue about audio obviously...
Very informative, thanks ..👍
S, You are welcome.
Yeah ideally a purpose room built for sound, with perfect ratio, no windows, panels and all the stuff would be a dream. In real life we have normal rooms that we have adapted to become listening spaces. I went through a similar low freq bump; I didn't change the room dimensions, I experimented with speaker height location, seating placement, simple absorption materials like rugs, frames. It 's not perfect, but have no high bumps or deep divs. People do your search and start with the Harman room calculator, it's free or a REW and a good mic like the U-Mik. Start with basic and simple adjustments, get to know how sound waves behave, how construction materials influence on sound and reflections. Then go all the way up to DSP's, multiple subs, absortion frames, accoustic panels and all that stuff.
This is one methodology to use. Howerver, it will not assist you with obtaining the highest resolution possible which is our mission statement. We are not interested in compromises.
My Room has a Heigh of 3.10 meters a length of 14.75 meters and a width of 3.5 meters
the room has concrete wall = is this a good room dimension ???'
+Joao Paulo Oliveira Go to this link:www.acousticfields.com/free-acoustic-treatment-room-analysis-tell-us-room/. Fill out all the required information and submit. I will give you some size and volume options to consider. Dennis
Damn... another video from this guy basically saying I'm so screwed! Ughhhhh!!!!😥😥😥😥😥
A, You can make improvements but you have to be realistic and realize that there is no 100 % solution.
@@AcousticFields I think I've done all I can without sacrificing even more space in that room. 8 gik 244 broadband bass traps in all corners. Huge heavy coutch, acustic panels on all reflection points. And I still have a low end kick in the face trouble. Plus, my wife already hates how I have the room setup!. Lol
A, Yes. This is because their technology does not absorb low enough. I get this complaint 2 - 3 times a month.
sir i need ut mail id ...need ur guidence regarding our church accoustic
love frm india
Hi P, Fill out the information in this link: www.acousticfields.com/free-room-analysis
Just open the window/s and all will get better
R, LOL. I wish it was as easy as that. I hate glass in any critical listening environment but would change my mind if I could open a window and smooth out low end response.
He said W H L a 1000 times and never says what it should be, what is the point in that >?
That is because you must match the usage of the room to the dimensions. There is no one size fits all. Those that look for generalizations and a one size fits all will never achieve the highest resolution possible. This is not an easy science. It has many variables.
Yea a rule of thumb or indications of decent dimensions may been of use instead of banging on about W H L. with no context. I could make a tutorial saying rockets need fuel, does not mean i've given you any decent information on building a rocket does it. This is what they mean when they say oxymoronic. To be honest it Is all a con, i've set up two studios so far and my production sounds ok when played back on multiple systems from mobile phones to a fully mono blocked and bi amped high end hifi. If it sounds good in the room when treated, it sound good everywhere else - JUST TURN IT DOWN !