Thank you, sir, for more good advice. As always you explain topics in a manner that lay people can understand. I very much appreciate your videos about these more general topics. And Happy New Year to you and yours.

Thanks Hans this is a very informative video with a perfect level of technical detail. Thank you.

Very informative! Thank you!

Excellent video, can't wait for the lower frequency video explanation on Jan 2024. Happy New year Hans!

Moving speakers anywhere and put acoustic panels are not possible for a majority of music enthusiasts. So room correction and dsp eq is often way better then bad speakers placement... it is just a fact of life that some purist audiophile won't really understand. When possible, of course it's better to choose the right room, install many acoustic treatments and place the speakers exactly where it sounds best. For the rest of us, room correction and eq is great! (For bad recordings too :)

Nicely Done.

Very interesting, Hans.👍🙂🎧

I have been using a DSPeaker anti-mode 2.0 for several years in a 2.1 stereo/sub setup and the effects are not subtle and are very positive. The listening room is a living room with vaulted ceilings but with noise dampening curtains, bookshelves and furniture. The DSPeaker also has many useful features to include a PEQ.

i have a miniDSP DDRC-22D in my setup and i have to say that it was IN MY CASE the best solution for my room size. i had major issues on the lower frequencies.

Dank u well meneer!

Happy New year Hans, I wish you would mention crosstalk elimination, or 3d sound projection as such (as by BACCH), this is an important part of DSP and definitely belongs into this review and your arsenal.

Best wishes for '24 and beyond! Another great vid! I so agree with you on the topics you raised. For some reason we keep calling it "Room correction" when we're not really correcting anything in the room. Nor are we correcting but rather adjusting the system for the bext match with the listening environment. Rather than Room Correction, it should be called something like System Acoustics Adaptation or similar. I've become a great fan of Dirac even with my not inexpensive and well matched system but in a crap room. Keen to see how Bass Control will further improve things at home. I think the main reason that Dirac works is that they calculate the filters at their own facilities and send these back to your unit to store (you need to be online when creating a filter) so don't rely on the processing power on board of a product (which will always be insufficient) or that of a laptop. Hope to see more on the subject.

Loved the rounding illustration 😀 Interestingly with the fpga used in PS audio direct stream 1, the layout of the chip is not deterministic (given the same input) so they listen to evaluate the best sounding compile. I had terrible luck with Dirac and between 4 sets of measurement and a lot of very different target curves, the only thing that did not make the sound stage flat as a pancake, bound to the plane of the speakers, with zero space between the instruments, was turning off time alignment and limiting the correction to under 500hz. Lots of EQ is done in mixing and mastering, that damage the sound far far less. That said I do realize that some people have good result using Dirac. According a dirac experts at the main resellers of Dirac enabled equipment in my country, it is very very roomy dependent if Dirac will give a good result or not, which is kind of amusing for a room correction system (and sad for anyone who bought their system due to it having Dirac and that have the wrong room).

For me, DSP is essential and way more than bass management and room corrections. Harmonic excitation and Hass effects can bring out the best of even the most modest of audio gear. The likelihood of the recording, DAC, AMP, Speakers, room, listener ears and listener expectations lining up perfectly are...... infinitesimally small. DSP can help with every step in the chain and in particular compensate for less-than-ideal speaker placements.

I use a room correction made by my denon receiver in order to flaten the frequency range of the stereo speakers. The result is much miuh more dynamic, resolving and punchy comparing to the "pure direct" option where no dsp or correction is made. Even when trying to connect my dac preamp directly to the poweramp, the result has much less bass, dynamics and resolution. My receiver is also used as the system's streamer (heos), which although it's user interface isn't the best there is, but sound wise sounds excellent

Using Dirac on the NAD C658 and active speakers. But I have a feeling that Dirac stealing soul of that system. But it is still the best way to fight 38Hz problem in my room. 1,6s reverb. Thank you.

Suggest you have a discussion with Peter Lyngdorf as he has spent a awful lot of money on room correction dsp R & D .

Always interesting. Always a compromise...tradeoff. I think I'm where you were a few years back...I love Dirac through NAD with my ATC actives....and I still love MQA as well. One day I'll move up to the Dutch&Dutch 8c.

Thanks for all your work. What do you think about Room Perfect ?

There are very few things I disagree with Hans Beekhuyzen about in general, but I think his exploration of DSP/Room Correction falls short. While I also have had the pleasure of Dirac within the MiniDSP SHD Studio, I can robustly confirm that Dirac (and the SHD Studio) is hardly the topnotch DSP solution. I use and find much more quality in generating proper FIR filters via Acourate and integrate them in Roon directly. For this, I hook up microphone and a small interface via a laptop with Acourate, and transfer the correction file onto my NUC i7 running Roon Rock. Instead of having a separate streamer attached, the NUC delivers directly to an AudioGD DI20 HE (with separate master clock) and via I2S to R7 HE Mk.2. Roon is such a bliss.

I will never hear without DSP / Room EQ. There are way more pros over cons. Specially when you use Subwoofers or Array Solutions its impossible without DSP. And in my opinion no 2.0 Home setup can deliver this precision over the complete freq spectrum (20Hz-20khz) Dsp & Subwoofers are the solution for precise & high end sound.

My introduction to room correction was a demo by Perpetual Technologies about 20 years ago. But they never brought it to market. Sadly, many pro audio speakers have gone to DSP. HEDD has ruined their sound when using analogue inputs.

I have a nice Holo May DAC and would love to effectively upsample without spending Grimm Audio money- it’s just not in the cards for me. At the same time, I could spend more than the Eversolos of the world. For a streaming/upsampling combo, what’s a good solution for say half the Grimm Audio budget?

Is the Lyngdorf TDAI-3400 (with its Room Perfection system) also worth a 'bombshell'?

Because I have a stubbornly difficult room and no desire for panels in my listening area I have gone from an old school purist Naum with almost nothing extra in the signal path to a Lyngdorf 3400 where you can do so much. More to the point with the Lyngdorf in my setup anyway you must fiddle (or it will probably sound singularly unimpressive) and luckily i have a background in sound engineering because the average consumer would find it difficult. My favorite dealer sneered at the lyngdorf but haven’t head my system. Does all the dsp muck up the original signal? Actually that is exactly what it is meant to do on the basis that the original signal isnt satisfying me anyway. I get lots of options with the Lyngdorf to try various after setup/ focus points and other settings and have a sound I really like. Its a matter of being open minded. I never thought i would replace my classic Naim sound (not the current bs lifestyle sound which is no longer JV Naim sound) but I listened with an open mind and it took me three separate loans and the realisation that I had to put effort into setting up the Lyngdorf even for a short listen to get me to change. The Lyndorf Room Perfect does a lot more than frequency adjust / correct btw and I very much had to still tailor its corrections to my taste

@TheHansBeekhuyzenChannel | Totally understand the no-EQ philosophy, but what to do with recordings with great content, but not-so-great production/engineering? Just don't listen?

Where in nature does a sound emanate from two (or more) sources? It's one to think about.....

€3,56 is rounded at €3,55 - not at €3,60. But we get the point you try to make.

there are these self proclaimed experts on KZfaq that beilieve DSP is the answer to everything. These guys have next to no room treatments and lack knowledge in speaker placements. They were extremely puzzled when i indicated DSP put a vail to the sound when active (lower bass only). to me none of these self proclaimed experts actually lives with a high end stereo system.