Good stuff. You're videos are getting more of a slick "Hollywood" look. :-) With the two front walls out of phase, are they the main factor in 'tuning' the center frequency of the absorber unit? Are the two front walls used in determining the bandwidth of the absorption?
headphones are bad because you miss the time shifted tone on the other ear which contributes a lot to what we call sound good speakers on good amplifiers with room-eq to fix the remaining issues in a well treated room will blow away any headphone
Thanks Dennis, I've been fascinated with acoustics lately, I've signed up on your site, but never received the verification email. However, I've been enjoying your RU-vid channel and learning and observing as much as possible.
Acoustic foam isn't the most efficient LF absorber, but its effectiveness does increase somewhat with thickness. I've seen the rates/levels on your 3" StudioPro foam, but have you ever done any rates/levels testing on 6" or 9" or 12" of your foam, including at frequencies at or below 125Hz, like 40, 60, 83, 100?
We do not offer a 3" foam technology. Our foam is manufactured in 2" thickness. You can lower the resonant frequency by adding layers. However, the rate of absorption becomes an issue with thickness of foam. You cross performance thresholds with other technologies. For example, if you take a 8" deep foam panel, you will be better off from a rate of absorption standpoint to use a perforated absorber at 6". You save 2" in treatment space for a higher rate of absorption.
Do these work in a small room ? , im going to build a studio that’s 3,70 M long 2,30 M wide and 2,4 M high . And its going to stand 2 meter in the air on a steel frame . In my head i think i know how im going to do it but still a lot of variabels to think off
love the new business focus, transforming it into distributors and customer educators is a great way to reach international level. now everything will be perfect if you make an alliance with sodimac, getting really tired of their fiberglass.
Anything above 1k i want to treat evenly in a very small room. I have options to put rockwool panels on wall, but not sure about which density to buy starting from 40 to 160 kg/m3. Any recommedations?
So i know very little about soundproofing. I am remodeling a mobile home and it is located right next to an airforc base that has very loud jet planes. Looking for cost effective options. Liked your warning on wool insulation.
Noise frequencies and amplitudes must be measured before any barrier technology is used. Jet noise is the worse type of noise to treat since it full range noise with high amplitudes (strength).
@@AcousticFields - I so I am picking up a decibel reader. An Amazon product relatively cheap. After I get readings of sound, do I apply layers of material accordingly? I read that different materials block different frequencies. Just not sure of the healthy materials to use. Weight is also a consideration on the load bearing walls. If to heavy i will need to add supports to the flooring joists.
@@nobodyisprfct - KRK was offering a free audio app for smartphones. It has a spectrum analyzer, noise generator, dB meter, etc. Are you building a studio or home theater? Or, just trying to reduce the noise of military aircraft? Good luck trying to mitigate the noise of afterburners.
@@rb032682 The jet engine test shed on Whidbey island would wake the dead when they ran an engine. We were there on a training op and I think the Navy just liked waking us up. They had good chow though, so it's all forgiven.
Hey Dennis! Thanks for the info. I am interested how can I optimize my studio room (20-25 square meters) before planning additional panels and acoustic treatment? What to look for, what materials for walls/ceiling/floor, type of construction, etc. Thank you. Bests, Antonio
I do understand that simplest design of diaphragmatic absorber uses pressure (not velocity) to move front thinner part in much more rigid box hence absorbing energy around resonant frequency. But your second membrane and more importantly carbon inside the unit are velocity based turning velocity of air molecules into heat? If so, the inner plate vibrates in such a way that molecules moves inside carbon horizontally. What I am trying to say is that it seems that your unit is both: - pressure system in terms of typical pure diaphragmatic absorption - velocity of molecules inside carbon area I have purchased DIY. Thank you.
B, You have an external cabinet that is the diaphragmatic absorber and corresponds to the rules of that design function. The internal perforated absorber corresponds to the design parameters of that design. The carbon accelerates the rate of absorption for both functions.
In this video I noticed there was 2" X 12" studs used as your side walls. Is it okay to build a cabinet on casters using 2" X 12" studs as my side walls, top & bottom walls, or would that make a difference as apposed to using MDF?
You need certain densities with the materials you use to construct a diaphragmatic absorber. It is the density of the cabinet, the depth, and the internal cabinet fill that all works together.
Over the counter carbons used for air and water filtration will not work for sound absorption. Carbon has to undergo a special manufacturing process to insure porosity size/count and granule density. We ship our carbon from LA and London.
M, Noise cancellation technology is another effort to use signal processing to manage source response. Any signal processing can be heard and colors the response curve even further. Treat your room using the available space you have with the proper technology then use small amounts of EQ to tame the remaining peaks and troughs in your room response curve.
Lets say I buy 10 acda-10s and I need them on Colombia, how much will the shipping be? Btw thanks for the videos, I have a little home studio with some corner foam """"bass traps""""" that dont do much... Seeing this content gives me hope that one day I"ll be able to hear my mixes with the low Frequencies being well represented with no huge dips and peaks.
Building one unit will not benefit any acoustical issue. The carbon is now 375.00 / BDA unit plus shipping. If you want our proprietary foam technology for the face it will be an additional 75.00 / BDA unit.
I bought the DIY plan of the diaphragmatic absorber. My studio‘s ceiling height is 2.65 m, so I wonder if one could increase the height of the device (while keeping the width and depth) to e.g. 2m or stack two with a hight of 1m-1.3m. Any comments welcome. Thanks!
I recently moved my studio into a rectangular shaped concrete room ( I know this is a worse case scenario ) The trouble I have is the low F# on any instrument is boom city. G and F next door have no boom problems what so ever. What do I do???
Go to www.acousticfields.com fill out the questionnaire and talk to Dennis. Once he gets the answers to his questionnaire filled out, then he can help you.
N, Rectangular rooms are fine. Go to this link and fill out the required information. www.acousticfields.com/free-room-analysis/ Please include pics of all room surfaces.
Starting to think people could use most or practically any activated carbon rather than the magic proprietary activated carbon from London & LA, prove me wrong.
Over the counter carbons used for air and water filtration lack the porosity count and density along with their ability to absorb moisture. We manufacture our raw materials to produce the proper pore count, diameter, density, and we treat our carbon not to retain moisture. You can prove yourself wrong by building your room and installing an over the counter carbon. We will even assist you with the process so you can report your findings. After the process fails, we will require you to do a video on the results so others can see your failure.
@@AcousticFields Cool. But what about the top of the walls? The junctions of the two. Can you make the ceiling joining the two normally? Why can't you leave it open, right?
Low frequency energy must be managed. It can not be eliminated only mitigated. This principle also applies to noise transmission. There is no such thing as sound proofing. With noise nothing is proofed just mitigated or managed.
You talked about building bass traps, but there's absolutely no "how to" in this video.. it's like an infomercial for your own product, clickbait, you do that on every video..
V, We are illustrating proof of concept in this video. You can order our DIY / BDA build plans and build your own unit to achieve the same performance as the illustrated production unit.
