How To Use The Room Mode Calculator 

I think it is fantastic that someone is willing to share their knowledge with the world for little or no reward. thank you.

Wow, I sure wish I know about the prime number thing when I was sitting on the john with a calculator trying to figure out room dimensions with no standing waves. Over and over, three dimensions with every multiple of the fundamental frequency. I learn something every time I check out your channel, like how much time I was wasting. Thanks again.

I tried to cook a decent meal using that chart. Mission failed, but my future studio will sound awesome. TY sir, great video.

This is an absolute master class in acoustics! THANK YOU, John!

John for imparting your considerable knowledge. of learning shared here and on your site!

This video is excellent! Thank you very much. I've enjoyed playing around with your metric spreadsheet. I'm not going to build a studio but it's fascinating to play with the figures. Just as a learning exercise. I've often wondered about ideal home listening room dimensions. For Hi Fi music playback only. I imagine you could adapt these dimensions for home listening room dimensions as well. I'm going to play around with this spreadsheet for many hours! I'm determined to have a strong understanding of these principals!

Very cool of you to share content and tools like this. Thank you :)

Hats off, thank you very much for this kind of valuable information.

wow - thanks for that massiv informations ..

Greate video. Love it. I was reading your internet page . On your workflow pay attention that after point 5 come point 3 instead of point 6...

Thank you Sir!

Thanks john brandt you shared a valuable information. Downloaded all the pdf and excel sheet, need to study in depth. Thanks once again

Amazing choice for the intro XD. Thank you very much for this video :D

The Excel document is hiding under the "Tecnical Drawings Tools & Calculators" (yes, it's missing an "h") Menu/Tab at the bottom of the Resource page

Thanks for the help! Awesome tool and resource!

Hi John! thanks for sharing all your knowledge and for made these videos. Would you explain how read the Control Room Broadband Trapping table? I understand the trap minimum but what are side position values? in reference to which thing? and what you mean with Rear Vent Opening? thank you so much!!

Thank you for the video

Hey John, thank you for this video! Just to be slightly off subject from this topic of room modes, I am interested to know what are the differences between soft flush mount (which you did plenty of studios using this technique) vs Hard flush mount. The advantages and disadvantages between the two and what are the methods to overcome the disadvantages? Not trying to ask you to spill any of your trade secret though. ;) Perhaps you should totally do a video of it too! Thank you! Jesper

Nice John :D

Hi John! Awesome video mate! You can convey information really well! I have a question regarding treatment. So modes below my Schröder frequency should be treated using membrane traps and modes above it are treated using absorption and diffusion? Is that right?

8:40 hey John, could you elaborate on that matter? the multiplication of the schroeder frequency by the √2.. what is that frequency tells us? We want to avoid resonances specifically below that frequency, but why this frequency and not above?

Hi John, have you got a video on how to use this for existing rooms? Thx

Hey John I am somewhat too stupid to even interpret the results even if I would manage to calculate the results. So um... idk can you tell me if 474 cm length 374 cm width and 310 cm height is okay? Please help... thanks a lot ! You are the man.

Hello and thank you very much for this information that you provide us. I have a question, is there a way to calculate the modes if the room is not parallepiped? I mean a room not "cubic".

Thanks for explaining the spreadsheet. Had downloaded it and understood most of it. This cleared it up. According to the room you used as an example, you should have a RT60 of 300ms from 100hz-30hz. Above 100hz should be 240. Is an accurate interpretation? Do use use this RT 60 to know how much bass trapping to add during planning phase? Then add more if needed? Thanks again.

Thank you John for this video and the amazing tools you provide to the community! If building a room within a room, are the room dimention to provide are those of the initial room? The inner layer (after isolation and drywalls)? Or the finished, treated room?

Hello John. Great video. I have a 2 x 6 ft. closet in my room. What should I do about that?

Hi, John. where to put the membrane traps in that room, how to locate those modes in a room?

thank you, Jhon very helpful. I have a question, my room is rectangular with an apex ceiling. how should I proceed when entering the measurement into the room mode calculator? thank you

Hi John. First of all, thank you for sharing your knowledge. In a 'box within a box' building strategy, should I input the inner or the outer box dimensions? Regards.

Dear John, I am using a mac and I can't transfer the data change with the command control+shift+S(on mac this is Save as...), is there anyway I can do this from menu commands? sorry to ask, the chart is not functional otherwise

I'm currently looking to tune my room, the more I've searched and found resources like your videos the same question comes to mind. If I wanted to calculate my room how would I account for a bed if I was going to use it for demo recording?

Hi, John! Incredibly educational to watch your videos. You convey knowledge in a good way! One question: I have a small listening room for 2-channel hifi. But it is a bit complicated. The ceiling height varies from 2.4 meters to 3.4 meters in the main volume, which has a base area of 3.2m * 3.3m (Yes. Terrible proportions). In addition, a volume comes in the form of a loft over the hallway outside. This loft is 1.3m * 3.3m and has a ceiling height varying from 0 to 1m. The loft means that the total width of the room is 4.5m. How can I calculate the repson in this room?

Hey John, im a little stumped. Im in a situation where i only have one room to use for my "control room". its my bedroom. here is the problem i am having, i plugged in my room dimesions, did ctr+shift+s then crtl+shift+c, and then i ran into my first problem. My bonello distribution chart reads higher red than blue at the 31.5 region. my question is, what do i do? is it possible to just provide extra treatment in that frequency using membrane traps (bascially "do the best i can manage")? Unfortunately it is a VERY small room and i am unable to afford a seperate space at this time so im really in a situation where this is all i got to work with. I currently live with my parents and dont have the luxury of considering building a "room within a room" considering they plan on selling the house at some point (aka they wont allow it, and thats fair) as well as i believe the room is too small to be built "inwards". Im worried about my options, but look forward to hearing your honest opinion if you see this and choose to respond. im hoping the answer doesnt amount to "your screwed" haha! but, prepared for anything cause thats how one learns, right?

God bless acoustic science))

Hello Mr! I've been using your Room Mode Calculator to figure out which room is best. I have a room that is 262 (H) x 575 (W) x 703 (L) meters, but since the room is still in construction I can have it with 280 (H) mt. Both rooms meet Bonello, but it seems to me that the one with 262(H) is less problematic than the one with 280(H)! I'm I wright? The room is made of reinforced concrete, and will be finished with gypsum board and wood (walls and ceiling). Can you help please? Kind regards.

1 24.46 Hz G0 1-0-0 ax 2 32.15 Hz C1 0-1-0 ax 3 40.4 Hz E1 1-1-0 tan 4 48.93 Hz G1 2-0-0 ax 5 56.27 Hz A1 0-0-1 ax ...........what is all these mean ? what is the relation these to sound treatment ?Thanks

Thank you for this tool! I seem to get stuck at step 3 when I try to copy the calculated modes to the diagrams. It seems like the Ctrl+Shift+C doesn't have the right function, I'm using the latest version of excel on macOS so perhaps it's not the same anymore. Do you have any idea what command to use to copy the data?

Hello John, I am a 61 year old musician that is getting ready to build a RIR in a spare bedroom of my home. The pre RIR dimensions are typical about 12' x 12' x 8'. I have reduced the RIR non treated dimensions by using your "Room Mode Calculator" down to the point where it can pass the Bonello test. These dimensions are L - 134.50" x W - 120.00" x H - 88.25". My Wave region is 50.41 - 153.73. But in the Relative Mode Strength chart I have no nodes below 50.41hz. Is this a problem, and can I overcome any problems that this may produce with room treatments?

Any advice for calculating L Shape room ?

Boy, I tried every ratio option for my 8' ceilings, but I couldn't get anything less than .29 seconds RT60. Any suggestions John?

I am looking to create an audio room with the following dimensions: L 671.0 cm , W 366.0 cm & H 427.0 cm. Unfortunately the room is fixed and cannot modify the dimensions. any advice you could provide?

My rooms L: 14.25 W: 11.458 H: 9.666....Schroederfrequency: 232 Hz , Critical distance: 1.61 ft . what is Critical distance: 1.61 ft ? Volume: 1579.17 cft , Surface: 823.84 sq ft ,RT60: 0.6 sec.Thank you sir

im building a house with a studio, 270h 260w 370L is good or i need to make any changes?

How to use Room Mode calculator with L-shaped room?

Nice 3 way morel you have going on there...

You say "you have to use membrane traps" for low frequencies....can't you port/vent low end out of a space as opposed to just using absorption ? Absorbing low freq's typically costs a lot of $$...venting would seem simplistic and cost almost nothing so why isn't this method ever discussed/employed ?

hi John what's bonello ? hug

need your mail id sir wan ur guidence for our church accoustic tretment

I have the feeling ypu need to knwo stuf before ypu understand this stuf. Im a beginner so i dont undertand this stuf