"New" material for high performance and cheap DIY absorption panels

[BoredSysAdmin]

http://www.diyphotography.net/get-perfect-sound-videos-vlogs-less-5-diy-sound-absorbing-panels/

 

[panteragstk]

Interesting. Was thinking of a DIY panel so I may try this.

 

[TheWarrior]

(to the video creator) "Do you even science, bro?"

First, the test ignores the fact that the panels hang on a wall, so the additional propagation loss resulting from the air gap between the towel and the mic means that those 'measurements' (I don't see any amplitude vs frequency data, do you?) are meaningless.

Second, when it comes to absorption, you either absorb it all, or don't (meaning ALL frequencies). So if a mix/master engineer covers the walls in towels, theres a high probability that the tracks will be in need of significant EQ by the consumer, to compensate for the lack of bass (towels haven't absorbed any, so the engineers ears will tell them there is too much, thus removing it from the track), and over extended treble (resulting from having absorbed all the high frequencies so more was added).

 

[BoredSysAdmin]

(to the video creator) "Do you even science, bro?"

First, the test ignores the fact that the panels hang on a wall, so the additional propagation loss resulting from the air gap between the towel and the mic means that those 'measurements' (I don't see any amplitude vs frequency data, do you?) are meaningless.

Second, when it comes to absorption, you either absorb it all, or don't (meaning ALL frequencies). So if a mix/master engineer covers the walls in towels, there's a high probability that the tracks will be in need of significant EQ by the consumer, to compensate for the lack of bass (towels haven't absorbed any, so the engineers ears will tell them there is too much, thus removing it from the track), and over extended treble (resulting from having absorbed all the high frequencies so more was added).

(to the poster above) "did you even watched the video, bro?"
the tests weren't done with panel on the wall, but in rigged test bed outside.
This DIY panel is specifically meant for ABSORPTION, not reflection. Sometimes you need one or other or both. It doesn't mean at every recording studio should cover all its walls in towels or any other absorption panels alone. This is subject best left for pros to decide, but often recording studios are sound treated.
If you notice the video has excellent voice quality recording and very easily understood without raising sound levels.
As for his testing results, though not very precise and scientific, were displayed in simplified but concise manner. Assuming test signals were played at same level each time (which is a safe bet) and mic was at same distance, the graphs were scaled to same levels then they DO make sense and show clear performance differences in various test materials sound absorption.

p.s: https://www.urbandictionary.com/define.php?term=bro

 

[TheWarrior]

(to the poster above) "did you even watched the video, bro?"
the tests weren't done with panel on the wall, but in rigged test bed outside.
This DIY panel is specifically meant for ABSORPTION, not reflection. Sometimes you need one or other or both. It doesn't mean at every recording studio should cover all its walls in towels or any other absorption panels alone. This is subject best left for pros to decide, but often recording studios are sound treated.
If you notice the video has excellent voice quality recording and very easily understood without raising sound levels.
As for his testing results, though not very precise and scientific, were displayed in simplified but concise manner. Assuming test signals were played at same level each time (which is a safe bet) and mic was at same distance, the graphs were scaled to same levels then they DO make sense and show clear performance differences in various test materials sound absorption.

p.s: https://www.urbandictionary.com/define.php?term=bro

I said the test does not account for the fact that the panels hang on a wall. So their absorption coefficient is completely different when measuring in free air. And I have no idea what the sound quality of the video has to do with anything.

You're defending hanging bath towels on the wall with a bar graph with no numerical values. For all you know, the attenuation could be in tenths of a decibel. What about the number of layers? How many folds do you make in the towel? Permanent press or high heat?

 

[ARES24]

For the uninformed;
Folded in half 54 times.
Permanent press makes it too ridgid.
Everyone likes it hot.

 

[tyhjaarpa]

Would be nice to see how these compare to glass fiber or peat absorption panels.