Equalizer in a Hi Fi system

It is the stereo system that trick our brain because they are all flawed ...

The BACCH filters DSP dont trick the brain , it help the brain to recover spatial musical information which is already there in the room and in the recording  in particular  but is lost by  the crosstalk effect ... Then this DSP help the brain to do his natural working... Because as said Choueri when we listen a bird in nature singing , there is one bird ,not two as in stereo ...

It is amazing to me that the digital algorithms have advanced so far that we can “trick” our brains, OUR brains, not the average casual listener brain, that well. One would expect we would hear SOME form of err or seeming misrepresentation, be it timbre related, or phase temporal blur, image specificity or what have you. Just the slightest SOMETHING. That we’ve come that far creating this enveloping 3-D with 2 channels is amazing.

I miss the EQs from the '80s. I had a Denon DE-70 which I regret selling. Wish they were still around.

Yes, I understand that @mahgister   but when we hear envelopment or surround dispersal of the 3 D soundstage but it’s coming from 2 front speakers it’s still the brain being tricked. Simply because you don’t have all these performers surrounding you in the room. You have two front left and right speakers. but I get what you’re saying. Anyway for this software to do what it’s supposed to do but still meet the toughest audiophile standards for SQ is a tough challenge!  Can’t wait to hear.

You will see that scottwheel is right on this and he own it ...😊

Me i was  only able to read the Choueiri  science paper ... it is convincing when we know what Choueiri talk about... I made some simple mechanical experiment with crosstalk already and so imperfect and with no comparison at all with designed filters  it is it was amazing ...

Me i will buy it when i could even without hearing it with no doubt ...be happy and feel lucky to be able to hear it...

Anyway for this software to do what it’s supposed to do but still meet the toughest audiophile standards for SQ is a tough challenge! Can’t wait to hear.

“Yes, I understand that @mahgister   but when we hear envelopment or surround dispersal of the 3 D soundstage but it’s coming from 2 front speakers it’s still the brain being tricked.”

everything we hear ultimately is two channels. Our right and left ears. Our brain deciphers cues based the difference between what the right and left ears hear. There are three main factors. Arrival time, amplitude and the head transfer function. Stereo cross talk messes up those cues by leaking those cues to the opposing ears. BACCH SP corrects that. So it actually is the only playback system that *isnt* a trick. And you can demonstrate the extraordinary accuracy of the system by using the in ear microphones to record someone at various positions in the room and then playing back that recording. It’s nuts. 100% accurate.