This is an awesome topic and you explained it very well. Many people I have met want to manage outside noise with acoustic treatment inside, but treatment and barrier are not the same thing. Thank you for this.
Could you please make a video about impact noise. Mentioning specially when it doesn't work, why it doesn't and why in that case the sound reverbs in the rooms above (or below). Thanks
S, Impact noise is vibration travel through a structure. You must treat the source and minimize source impact. Treating the symptoms is not as effective as lowering the source impact.
@@harbinger8083 .. You know it. .. acoustically speaking ICF construction is underrated. .. The Oak Ridge National Laboratory folks (ORNL) published findings for a so-called hybrid ICF. .. Basically a typical ICF form with an additional EPS center. .. (2.25 EPS/6.00" concrete/1.5" EPS/4.00" concrete/2.25" EPS) .. The wall partitions must have a respectable STC.
Great stuff Dennis. What you say makes sense! How do I find instructions for doing the 7 day study? I paid for and downloaded RTA Pro for my phone. I messed around with it a bit. I'm not sure what I need to do next, or what I need to write down.
I like this one! My girlfriend and I plan on having our next house built and I was curious about what all would go into having a sound-isolated theater as I'd like to be able to unleash the thunder any time of day/night. Sucks that it's going to take SO MUCH work, but this video makes a good starting point so we can work that into the mortgage and not have it be some costly afterthought.
if I want to reduce large garbage trucks and loud neighbors producing low frequencies in my residential home (vinyl flooring with drywall)... do I essentially have to somehow pour a 14 inch thick concrete wall room "within a room?" I want to make sure the wall(s) won't collapse on me while I'm sleeping. Any quick advice for building such wall would be greatly appreciated.
With noise there is no easy solution. No wall hanging panel will stop noise. It requires a permanent construction solution after the frequency and amplitude have been determined. Think of your room as a boat that you will place in the ocean. It must be strong to mange the ocean waves from smashing through it and it must not leak.
@@AcousticFields thank you!! I will create a floating room with felt on the bottom, using 2x4's spaced 24 ft o.c. with drywall on each side and insulation. I won't attach any part of it to the existing walls, floor, or ceiling. I hope this will help!
@@DJimeku It won't help with frequencies below 125 hz. garbage trucks measure in the 30 - 40 hz. frequency range. This construction method will be like holding up a feather to stop a tornado.
Mass for low frequencies , damping and diffraction for high's is what I hear you say. Have you done any work looking at how wave speed transition through materials can provide excellent dampening, by the use of materials with highly different wave propagation speeds! ?
A, Absorption and diffusion are the two treatment types we have to work with. Diffraction is not an acoustical tool to manage issues. It is a form of distortion. You are describing the noise transmission process associated with constrained layer mass damping which has been around for years.
@@AcousticFields Yeah I kinda figured it had been , just not sure how much attention had been spent on propagation speeds through various materials ! Wood we know is roughly 4 times faster then air, Steel 10 times faster , etc . By changing propagation speed you suck up a lot of energy !! I would like to call you at some point to discuss a few topics.
I think you are just using a different approach/ terminology to accomplish the same thing. e.g. Dennis used a metal plate and concrete to accomplish exactly this. Each material will pass the energy based on transmission characteristics RE frequency and absorb the rest. Then the next material will do so based on it's transition characteristics. With the contact boundary between them absorbing energy by trying to couple the changes between characteristics.
hi dennis! awesome video, i recently spoke to you from new york. I made a mistake with my ceiling height saying it was 7'2", its actually 8 foot to the subfloor above. i did the calculations and my volume is actually 2300 sq ft, not in the red zone! do you think this would change the necessary amount of ACDA drastically? sorry i made the mistake thanks for your time!! nick from new york.
Hello, my room is 12.5 wide, 26.5 long, but the problem is the height of the ceiling, it is an inclined plane where the lowest part, the front of the room, is 7.5 high and the highest side, the back of the room, is 17 (all measurements in feet) is there any way to make the calculation or the inclined plane prevents or complicates much? thanks.
S, You need to find another room. A 7' high ceiling height will not work with any width or length.
4 года назад
@@AcousticFields Sorry, my measures are in meters and converted wrong, they are 2.5m high en the front, and 5m high in the bottom of the room. 3.9m wide and 7m long. What I want to know is how I can calculate an inclined ceiling, what size need to be considered, the one on the listening position or the one on the speakers location, or an average...?
S, Concrete is one material type to use as a barrier. What material type to use is based upon the frequency and amplitude of the noise you are trying to reduce the transmission of. There is no one best material for all frequency and amplitude issues.
True Enlightener!
God bless you!
🌞
T, Thanks and bless you for your thoughts and comments.
So glad I came across the channel.
This is an awesome topic and you explained it very well. Many people I have met want to manage outside noise with acoustic treatment inside, but treatment and barrier are not the same thing. Thank you for this.
F, I see it everyday. People think they can hang a panel and stop noise. Noise is like water. It will find the weakest link and go through that.
Such good information!
Than you for your appreciation of our efforts.
Could you please make a video about impact noise. Mentioning specially when it doesn't work, why it doesn't and why in that case the sound reverbs in the rooms above (or below). Thanks
S, Impact noise is vibration travel through a structure. You must treat the source and minimize source impact. Treating the symptoms is not as effective as lowering the source impact.
+1. Great topic. .. ICF (Insulated Concrete Forms) construction is a good start in new construction.
Michael Schneider if and when we redo our home, I want to ICF throughout.
@@harbinger8083 .. You know it. .. acoustically speaking ICF construction is underrated. .. The Oak Ridge National Laboratory folks (ORNL) published findings for a so-called hybrid ICF. .. Basically a typical ICF form with an additional EPS center. .. (2.25 EPS/6.00" concrete/1.5" EPS/4.00" concrete/2.25" EPS) .. The wall partitions must have a respectable STC.
Great stuff Dennis. What you say makes sense! How do I find instructions for doing the 7 day study? I paid for and downloaded RTA Pro for my phone. I messed around with it a bit. I'm not sure what I need to do next, or what I need to write down.
The software we use is part of our design services which is fee based.
I like this one! My girlfriend and I plan on having our next house built and I was curious about what all would go into having a sound-isolated theater as I'd like to be able to unleash the thunder any time of day/night. Sucks that it's going to take SO MUCH work, but this video makes a good starting point so we can work that into the mortgage and not have it be some costly afterthought.
B, You can figure walls at least 12" deep with STC ratings of 90.
if I want to reduce large garbage trucks and loud neighbors producing low frequencies in my residential home (vinyl flooring with drywall)... do I essentially have to somehow pour a 14 inch thick concrete wall room "within a room?" I want to make sure the wall(s) won't collapse on me while I'm sleeping. Any quick advice for building such wall would be greatly appreciated.
With noise there is no easy solution. No wall hanging panel will stop noise. It requires a permanent construction solution after the frequency and amplitude have been determined. Think of your room as a boat that you will place in the ocean. It must be strong to mange the ocean waves from smashing through it and it must not leak.
@@AcousticFields thank you!! I will create a floating room with felt on the bottom, using 2x4's spaced 24 ft o.c. with drywall on each side and insulation. I won't attach any part of it to the existing walls, floor, or ceiling. I hope this will help!
@@DJimeku It won't help with frequencies below 125 hz. garbage trucks measure in the 30 - 40 hz. frequency range. This construction method will be like holding up a feather to stop a tornado.
Mass for low frequencies , damping and diffraction for high's is what I hear you say. Have you done any work looking at how wave speed transition through materials can provide excellent dampening, by the use of materials with highly different wave propagation speeds! ?
A, Absorption and diffusion are the two treatment types we have to work with. Diffraction is not an acoustical tool to manage issues. It is a form of distortion. You are describing the noise transmission process associated with constrained layer mass damping which has been around for years.
@@AcousticFields Yeah I kinda figured it had been , just not sure how much attention had been spent on propagation speeds through various materials ! Wood we know is roughly 4 times faster then air, Steel 10 times faster , etc . By changing propagation speed you suck up a lot of energy !! I would like to call you at some point to discuss a few topics.
I think you are just using a different approach/ terminology to accomplish the same thing. e.g. Dennis used a metal plate and concrete to accomplish exactly this. Each material will pass the energy based on transmission characteristics RE frequency and absorb the rest. Then the next material will do so based on it's transition characteristics. With the contact boundary between them absorbing energy by trying to couple the changes between characteristics.
hi dennis! awesome video, i recently spoke to you from new york. I made a mistake with my ceiling height saying it was 7'2", its actually 8 foot to the subfloor above. i did the calculations and my volume is actually 2300 sq ft, not in the red zone! do you think this would change the necessary amount of ACDA drastically? sorry i made the mistake thanks for your time!! nick from new york.
S, Fill out the information in this link: www.acousticfields.com/free-room-analysis/
Thank u!
Hello, my room is 12.5 wide, 26.5 long, but the problem is the height of the ceiling, it is an inclined plane where the lowest part, the front of the room, is 7.5 high and the highest side, the back of the room, is 17 (all measurements in feet) is there any way to make the calculation or the inclined plane prevents or complicates much? thanks.
S, You need to find another room. A 7' high ceiling height will not work with any width or length.
@@AcousticFields Sorry, my measures are in meters and converted wrong, they are 2.5m high en the front, and 5m high in the bottom of the room. 3.9m wide and 7m long. What I want to know is how I can calculate an inclined ceiling, what size need to be considered, the one on the listening position or the one on the speakers location, or an average...?
Thought concrete was a very good transmitter of sound?
inside of a room yes but from one room to another no
S, Concrete is one material type to use as a barrier. What material type to use is based upon the frequency and amplitude of the noise you are trying to reduce the transmission of. There is no one best material for all frequency and amplitude issues.