@mahgisterdo you have links or papers about this active treatment?
did you ever compared active vs passive treatment?
I mean, 95% of top level studios still use simple passive treatment. when well made, its very good...
Paper?😁
I am not a scientist in any way...
My idea come from an article in acoustic research from japan in 2008...When i was arguing with an engineer about imaging...
I used homemade tuning set of pipes and tubes orientable and tunable...The idea is first in Helmholtz...
Any room being a distribution of pressure zones i used my tubes and pipes grid or mechanical equalizer and tuned them like someone tune a piano...
Better than a mic : your 2 ears... My sound is good for my nearfield listenin(3feet) and very good also for my regular position (8 feet) i have a dedicated 13 feet square room height: 8 1/2 feet....
The response frequency from a mic adjust the sound for a position of listening in millimeter.... It is a partial helping tool that do not replace a passive acoustical treatment...But complement it for some people ... I dont have one...Instead i used my own device...
I called my mechanical equalizer activation of the room because the tool is an active part of the room....Unlike an electronic equalizer and without his limitations...
the passive treatment is useful and the active after that is powerful...
read that to begins with my idea comes from these concepts:
https://www.researchgate.net/publication/223804282_The_relation_between_spatial_impression_and_the_law_of_the_first_wavefront The creation of this device cost me nothing...
I use orientable straws of different size and diameter, plumber copper pipes and pvc tube in my basement...
I tune 32 of them of different size between 8 feet and 12 inches around my room and near my speakers... you will understand why reading the article.... The location is important and the orientation of the neck also in the room....
It takes me hours to created them on an evening whim but few weeks for the best tuning... 😊😉
You must use ONLY acoustical timbre perception of voice or instrument to tune the sound...No electric or amplified or electronical music.... The reference point is human timbre...
my 500 bucks system is one of the best in relation to the ratio S.Q/price....
Upgrading it appear useless to me....
I know that a relatively good audiophile experience is related mostly about acoustical settings if we supposed relatively good basic gear to begins with...
People dont know acoustic power they bet their money on very costly gear.... this is simply ignorance...
For sure many system are better than mine but i can assure you that they dont cost 500 bucks.....Anyway when the piano filled my room 3-d i dont think about the limitations of my system .... there is none that put me in the urge to invest money .... It takes me 2 years to figure out how to controls: vibrations, decease the electrical noise floor but the most hard part was the acoustic...
My goal is the best possible at NO COST.... i succeeded...