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HiFi room acoustic treatment

Hello,
From Europe alone, native language is not English to me. I pray for understanding.
 
I joined the acoustic treatment of the ceiling and the wall behind the loudspeaker. On the ceiling go Rigips Rigiton 8-15-20 gypsum boards, and above them stone wool.

On the wall behind the speaker goes 15 cm of stone wool, gypsum panel with 8% perforation, and another 5 cm of stone wool.

I am concerned about the final layer of the wall. I would put 2 cm wide strips, with a distance of 2 cm (50% coverage).

However, I can not find a stone wool with the finish in the appropriate color. Can I put a thin microfibre fabric over a stone wool?
128x128forgisound

Showing 2 responses by randy-11

randy-11
1,913 posts
 
1. you are on the right track

2. yes, you could - but why?
if a diffusor it needs some depth; if an absorber, it also needs some depth

- the Master handbook of Acoustics is an xlnt English language tome or bible on what to do

what is your native language?
randy-11
1,913 posts
 
well, not sure if anyone here is fluent in Croatian, or if you can buy that book - why not start checking libraries to see if it has been translated, or if something similar is published in Croatian

here are some helpful sites:

only for a rectangular room:
http://amroc.andymel.eu/

http://www.soundonsound.com/techniques/studio-sos-guide-monitoring-acoustic-treatment
https://www.acousticfields.com/ode-to-the-dedicated-listening-room/

and here is one from Canada (which features the treatments they use in their igloos and snow caves):
http://www.enjoythemusic.com/canada_hifi/08_2013/improving_room_acoustics.htm

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