When we’re talking about recording studio door construction techniques we’re really talking about barrier technology. We want to keep the sounds made in the room, inside the room. We want to keep the sounds that are made by sources outside the room, outside where they belong. We don’t want them in the room. Stay out! We have updated this blog on 12/8/19 to reflect new changes in the science and technology.
So How Do We Do That?
We construct a barrier between the source and the receiver. OK, so we want to build a wall. The door is the wall but the door is a wall that moves, has openings, etc. You have to remember in barrier technology that the weakest link in the wall defines the total performance of the wall. So if you have a poured concrete wall and a little piece of aluminum for a door… well, you see the problem?
You have all this density and then they have this opening for a door, that is let’s say, thirty by seven? So you have a twenty-two or twenty-three square feet opening in this big concrete wall. The whole concrete walls’ effectiveness is reduced by seventy percent. See? That’s why barrier technology is so critical. So then the opening, the door, has to have similar barrier technology qualities and performance. So we have multiple layers and sealing requirements so that it seals. You can’t have an eighth inch, a sixteenth-inch hole, it all has to seal. Notice the barrier layers inside of our CAW Carbon Absorber Wall. The multiple layers or sandwiches installed between the studs in a barrier design and methodology to deal with the client’s individual noise issue
Air Test With High Pressure
Then you air test it with high-pressure air to make sure there are no leaks. You can do it with compressed air in a can. That’s how we do it. So you have to have sealed it. Then you walk a distance and then you have another door that’s a little bit different and that’s called a sound block. That’s a space between two barriers. So what have you created? You’ve created an air space between two barriers. So now you have three barriers. Air is a barrier to certain frequencies. Door, door, air. So, that’s the best way to do doors. This video I made on barrier technology is definitely worth your time if you’re interested in recording studio door construction.
Barrier Definition: https://en.wikipedia.org/wiki/Noise_barrier
This video I made on barrier technology is definitely worth your time if you’re interested in recording studio door construction.
What About a Single Door in the Wall?
Just doing a door into a wall can be done and I’ve saved it for last because it’s the hardest and you’ve got to get your walls right first. The wall has the most surface area so you need to focus all your energy on the wall. And a two by four frame wall… don’t ever build one! Barely, a two by six, but a two by eight that’s a great start. Because just using common construction methods and two by eight, that seven and eight-inch depth you can get a lot of performance for just a little bit more material costs.
Barrier technology is all about density or mass. It is all about vibrational acoustics. We are seeking in our design to reduce the vibrational energy that strikes our walls and doors. We must use the correct material types and construction methodology to match the frequency and amplitude of our noise issues. If its full range noise that deals with a full frequency range then we need to design our door a certain way. If it’s middle and high-frequency noise then we need to use a different approach and design for our recording studio door.
Our first step before we design anything is to measure the noise we are fighting against. We must measure frequency and amplitude. We must know what noise frequency is causing our noise transmission and we must know how to stop it. Every frequency has a material and construction methodology that works for that frequency and amplitude. Amplitude is how strong the noise is at what frequency. Both frequency and amplitude must be dealt with.
We have a process to assist you with noise measurements using your cell phone. We provide you the measurement apps to record the frequency and amplitude of your particular noise issues. You then place that data on a data sheet and send it to us. We will design the door structure for you and provide drawings so you can build it on site. We can also assist you with the build.
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