Experienced only: What have you done with room correction?

 Lyngdorf room correction transformed the sound of my Dali Epicon 6 speakers and Harbeth 40.1s in my systems.  Much improved bass, midrange clarity and overall musicality. 
 

The Lyngdorf room correction also improved the sound of my friends AudioVector R3s nicely in his room.  Tighter and more articulate bass as well as improved midrange clarity and refinement. 

I'm about to find out. I just took delivery of Legacy Aeris with Wavelet processor. I have high hopes.

I've used bass correction in situations where it's just a joke without it. Sometimes we don't get to move the speakers where we want. In at least some of those cases judicious use of room correction can make the listening experience dramatically more enjoyable. In the lower bass time domain issues aren't as big a deal to human hearing. My experience lines up with research I've seen on the subject. If the severe peaks and dips can be reduced with dsp it sounds better than not doing it even if it doesn't address some of the time domain issues. Above 100 Hz things change and time domain becomes very important. Thankfully, absorption becomes increasingly efficient and less costly as frequency goes up.

I’ve used TacT, Dirac, and Anthem. A few things:

• DRC can be fantastic, especially when using digital xovers for subs. It can smooth bass response, and the good products can also remove excess brightness if you tell them to.
• The better the digital processing in the convolver, the better it will sound. The best of the ones I’ve tried is the Anthem STR, which works at 192 kHz and 32 (I think) bits.
• Different products don't all work to the same level. YPAO in particular seems to have a bad reputation. ARC and Dirac have good ones. Even ARC is better or worse (from what I read and discuss), depending on whether it comes with a subwoofer or a full processor.
• With previous products, I’ve heard minor side-effects when I engaged the DSP. With the Anthem STR, I do not.
• It’s important to have a well-calibrated mic. The cheap items in a manufacturer’s lineup often will have worse mics.
• No automatic system will always arrive at sound the way you want it. Every automatic solution should be tuned by ear (assuming the devices allow that) to dial it in. IME, it can take several iterations to get there.

I am using 3 different DSP technologies and they all improved the sound in the rooms in which they are used. I use: whatever Emotiva offers in the MC 700, whatever Integra offers in its receivers, and whatever DSpeaker (model 2 or some such) uses. I don't care what they call these methods, I only care that they work - and they do. I notice someone suggested that you throw your equipment away because they don't work. This is certainly unhelpful, not to mention arrogant and disrespectful. Disregard such nonsense, please, and continue your quest for good sound in your home. It does make a great deal of difference where the microphone is placed during the testing phase of the procedure. I always place it on a pillow (because my clothing absorbs sound - we are trying to simulate a listener's head) and prop it up on cardboard boxes so that is "head high."  If you placed the microphone on an 18 inch squarr marble slab on the seat you usually occupy, the results would be very different. Emotiva's fanciest system, which I help a friend to install, has a very detailed (and lengthy) setup involving multiple mike placements which produced a really remarkable (if I were a less reserved person, I would say "spectacular!") improvement in a loft usig Magnepan 1.7i speakers and a single subwoofer. Happy listening.