Acoustic treatment for behind seating position

[AudioDoctor]

I have a simple fix for this in my home office, and to my ears it made a significant improvement.  I hung a rug on the wall behind me.  Now I suppose someone will come along and claim it matters which material the rug is made from, and how it was made, but who knows.  I have one of those big hand woven wool ones (the store said so anyway) that I bought at a huge discount, and it works.

 

edit:  I don't have any fancy graphs like @Ralf11 though.

[AudioDoctor]

29 minutes ago, Ralf11 said:

 

the important things are whether the rug is organic, was the wool sustainably harvested by a metrosexual communal affiliation group, was the sheep named Ernie and did he have a happy life, etc.

 

Of course, how could I forget those important variables.