Spring-Loaded Screw Turns Drywall Into Sound-Absorbing Panels

@bpoletti wrote:
A room must ABSOLUTELY BE COMPLETELY DEAD in order to NOT distort the recorded signal. ANY room contribution to the sound is a distortion.

Anything other than a DEAD room will distort the sound. Absorbers, diffusers and the like need to be strategically placed in the room to deaden it.  

Yes, you are right:
"ABSOLUTELY BE COMPLETELY DEAD in order to NOT distort" 
That is a ANECHOIC CHAMBER you are describing.
Nobody wants to listen to music there.

"Absorbers, diffusers and the like need to be strategically placed in the room to deaden it."
You will NOT achieve any anechoic chamber in anyway, even if you place the best ones and as strategic as you can in a room you will get distortion anyway. If not you not are building a  anechoic chamber in your room and that is your goal. Then it is another story.

I use DEAD and LIVELY wording to describe the SOUND as dead or dry with lower amount of higher frequencies that are absorbed than the bass and lower mids are not.
Lively it is the opposite think of it as a empty echoing room there allot of the sound are bouncing around for a long time.
We humans prefer something in the middle. (A room with furnitures)

Stop a second and think on it if you close your eyes and step in to a big church. Your ears will tell your brain you have just stepped into a big room/space when it has long reverberation times.
Keep your eyes closed and step into a ordernary room. Your ears will tell your brain that it is a smaller space.
In other words your ears tells your brain the size of the space you are in (how far away the walls/boundaries are). And the eyes are also doing the same when looking. So two senses acting together and confirming their input to the brain all the time when we're awake.

Now go into a anechoic chamber.. it will be a strange and new/weird experience for your brain. Your eyes tell your brain the size of the room but your ears tells the brain that this is a really BIG space that are enormous. When the ears are not getting any reflected sound back to them. Then that what is the brain compute the info from the ears.. data missmatch = confusing.
(Plus other things but that is beside the point.)

That is only ONE point why you dont want to listen to music in a anechoic chamber just to defeat distortion.
Distortion in room is not something you want to be NULL/0. Remember we ALWAYS have distortion/reflections from the walls when just talking to someone in a room. That IS the normal for our brain.

So my earlier comment were that in big spaces like restaurants, malls and so on there is a lot of higher frequencies produced that would be absorbed to a extent when using this special spring screws according to the graph.
IF that works then maybe they do not need to invest in sound absorbers hanging down from the ceiling as often seen in those spaces were my though that is one use case for those..💖

@optimizerWhen room interact with recorded sound, the recorded sound is distorted.  Period.  

The BEST listening is in a dead room.  Your statement that rooms should not be deadened is promoting that distortion.  Period.  It interferes with imaging, can upset the soundstage and changes musical instrument harmonics.  Period.

Distortion in room is ABSOLUTELY something you want to be NULL.  We must minimize distortion / reflections from the walls.  Those quite simply interfere with the reproduction of the recorded signal.  There will be reflected sound on that recording.  We cannot add to that distortion by using a live rom. 

There is nothing to say in rebuttal.  If the goal is undistorted music exactly how it was recorded, then a dead listening room (or headphones that do exactly the same thing as a dead room) is the only way to go.  Anything else is distorted. 

DEAD ROOMS do not have to look like an anechoic chamber.  They can be nicely decorated and pleasant.  

When room interact with recorded sound, the recorded sound is distorted. Period.

The BEST listening is in a dead room. Your statement that rooms should not be deadened is promoting that distortion. Period. It interferes with imaging, can upset the soundstage and changes musical instrument harmonics. Period.

Distortion in room is ABSOLUTELY something you want to be NULL. We must minimize distortion / reflections from the walls. Those quite simply interfere with the reproduction of the recorded signal. There will be reflected sound on that recording. We cannot add to that distortion by using a live rom.

There is nothing to say in rebuttal. If the goal is undistorted music exactly how it was recorded, then a dead listening room (or headphones that do exactly the same thing as a dead room) is the only way to go. Anything else is distorted.

DEAD ROOMS do not have to look like an anechoic chamber. They can be nicely decorated and pleasant.

When room interact with recorded sound, the recorded sound is distorted. Period.

Yes that what i also said but I tried to say it more simple: when someone talk to you in a room then you have reflection or like you say distortion. That is the norm and what we are used to when it is normal. So yes no need for periods.😉

The BEST listening is in a dead room. Your statement that rooms should not be deadened is promoting that distortion. Period. It interferes with imaging, can upset the soundstage and changes musical instrument harmonics. Period

Distortion in room is ABSOLUTELY something you want to be NULL. We must minimize distortion / reflections from the walls. Those quite simply interfere with the reproduction of the recorded signal. There will be reflected sound on that recording. We cannot add to that distortion by using a live rom.

There is nothing to say in rebuttal. If the goal is undistorted music exactly how it was recorded, then a dead listening room (or headphones that do exactly the same thing as a dead room) is the only way to go. Anything else is distorted.

DEAD ROOMS do not have to look like an anechoic chamber. They can be nicely decorated and pleasant.

.
I am not English speaking and it is not my first language. But here is the confusion. What you call a dead room and want to be NULL.
That is ONLY obtained in a an anechoic chamber.
EVERYTHING else is NOT as you write a dead room. It is like you write:

We must minimize distortion / reflections from the walls.

It is like you write MINIMIZE and in other words something is still left (usually >20% is still bouncing around in the room variation by frequencies)

So that what YOU call dead room I call it more or less lively. And my bar is much higher for what is a dead room is a anechoic chamber nothing else is a completely dead room.

What you call dead room I call that it is just a TREATED ROOM. It is FAR from a dead room in my opinion and also if we measure. So it is easily proved.

So I hope the issue is that we just use different vocabulary nothing else. 🤔🥳🎶🎶💖

This sums it up.
https://i.pinimg.com/originals/c0/3b/e4/c03be45e6048a55fbd50fa6746e4669b.jpg

👍🤣