@arion1 DSP is a wonderful technology, but it absolutely cannot change anything about the room. This is one of the great misunderstandings in audio,
DSP can only change the input from your speaker into that space. The output of the space to your ears, everything but the direct sound, the reverb time, eigentones, critical distance, any and every other acoustical characteristic are absolutely untouched by DSP or any other form of equalization.
Those acoustical characteristics are all physical characteristics defined by the room, it's dimensions, absorbance, reflections and diffusions. Only changing the physical room characteristics can change the room acoustical characteristics.
That said, good luck with your project. Just don't promise what it cannot deliver.