More than half people had no idea of basic acoustic .... The concept above of "envelopment" or named " listener envelopment" Which is the experience resulting from the relation between the sound sources apparent dimensions and the listener position and envelopment , ASW and LV abbreviated, can be mechanically created in a small room and this without any DSP but with some timbre modifications and no comparable perfection as with the BACCH filters...
I did it in my small room then i know it ...
Then when i read about the BACCH i know instantly how and why this will be a revolution in audio...
Knowing basic acoustic by experiments is better and a real knowledge, buying many dac and many amplifiers and speakers because of hype and a big wallet is NOT KNOWLEDGE...There is no other dsp to compare the BACCH filters with... Reading what Choueiri explained well, if you had basic acoustic knowledge is ENOUGH to understand why it is not a marketing gimmick...