Trinnov Waveforming Technology Explained with Arnaud Laborie
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- เผยแพร่เมื่อ 2 ต.ค. 2024
- The new Trinnov Multiple Source Multiple Controller Waveforming Technology explained to us by Arnaud Laborie himself. Arnuad is the CEO and co-founder of Trinnov and has a PhD in signal acoustics. This new tech seeks to revolutionize bass control in our homes. The result is perfect bass at EVERY seat location with minimal variance.
Read our tech article on Trinnov Waveforming Technology: www.audioholic...
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Excellent stuff. I'm curious to see how close Dirac ART will get you to similar results. Obviously, Trinnov's system has multiple components and technologies, but at least comparing the active room treatment part will be interesting.
Dirac is already pretty awesome.
I Can't remember what the characteristics are of the Kii Three with the BXT added, but this combined with the Kii Three
A major but not obvious point that he speaks to several times is that with steering, you don't excite the room as much to start off with and that is huge. Think of it this way for the high frequencies; You have a speaker with Horn tweeter that has a 60 x 60 degree polar pattern and you place it tight to a side wall resulting in direct, high energy reflections off of that side wall scattering out into the room. Versus you take that same speaker and place it 1/2 of the way across the room. The first excites the room in very negative ways, the second doesn't create the problems to start with. Thanks for the video explanation. Well done.
"You need mass to absorb acoustical energy" - Trinnov "Nope"
I guess Gene already has an ideal setup to make this work. 😉 (Four subs relatively equally spaced in 2 or 3 dimensions across the front wall.)
I really needed this, pretty awesome approach. I wanted to hear a bit more about the infrasonic integration though. This topic definitely needs a followup
We will talk about this more as it is released. Arnaud was explaining the tech as it stands today and as it will be in the future. The infrasonic work I believe is new and there is likely nothing more they can say about that.
@@PoesAcoustics great, thank you :)
x
Do you mean earthquakes..?😂
I guess, thanks to the rich people who buy this stuff and make it possible for trinnov to exist. The good thing about this company is that they are essentially getting paid to try to improve home theater audio. 99.9% of people will just have to wait for the trickle down.
1:03:00 I've been preaching that for years, low bass is localisable. The next step will be to have waves formed for each speaker such that bass can be localised in any location. 3D audio should be much improved and directors will have more to play with. :)
So what I'm hearing is that I want every single square inch of the walls and ceiling covered in drivers 😅
If your subwoofers have a wider frequency range, instead of 10hz to 120hz your subwoofer can do 10hz to 200hz is this better for this technology?
The issue isn't the subwoofer bandwidth, at somepoint the wider LF bandwidth could become detectable. This technology can potentially work with any and all speakers in a system but the problem becomes more difficult to address curatively at ever higher frequencies. The array also must have far closer driver spacing. It's tricky to get to 150hz, that likely needs at least 4 subwoofers in a smaller room and probably 6-12 in a larger one. To get to 200hz or more you likely need 50% more driver with closer spacing.
Do line arrays work well with this technology like Wisdom audio Speakers?
Line arrays can provide a plane wave at the frequencies they are a line array at. So Wisdom speakers are line arrays, to a point, over their entire bandwidth. However, that has nothing to do with the problems this is solving, so the answer is that they maybe compliment each other, but they are not better for each other. It's that they use the same technology to solve related problems but in unrelated ways.
One issue with Wisdom arrays is that unless the array is fairly long it won't actually behave as a line array at a typical listening distance. It will have a spherical wavefront approximation with the same dB loss with distance as a typical monopole. Instead, the Wisdom really just behaves like a speaker with very narrow vertical dispersion. To regain wide vertical coverage the line array would need to extend most to all of the height of the room.
Even in large venues the line arrays used really provide highly controlled vertical directivity that allows you to "beam" the sound precisely where you want it. This is a real issue in large venues where there is a lot more area you don't want sound vs do. That isn't really a big concern in smaller residential environments. Further, small rooms have far more early reflections and these early reflections dramatically increase as you move away from the speaker array. So what happens is the ratio of direct to reflected sound goes down and the total sound energy stays mostly the same. As such, you don't see a 3dB per doubling of distance loss with arrays and 6 with the other. You see like 1-2dB with both. In fact it sometimes gets louder as you move near walls.
Is there a firm date for the when the sub positioning guide will be available? It seems like it's been 2 months away ever since the ISE demo in early February.
I am not aware of one. Late summer is all I've been told. I'll try to stay on top of that and see what they share.
What I would also find important is how large the membrane area and the housing of the subwoofer must be in order to function adequately. In the simulations, huge bass reflex boxes were shown. I can hardly imagine that anyone would voluntarily put that in the living room. In that case, it would only be of value in home cinema.
Also, the woofer must play relatively high to bridge the gap of active and passive absorber would probably need more than 6 woofers to reach the level and the height of the frequency.
I am still curious
The box volume and driver surface area have nothing to do with how this technology works. They happened to partner with companies that make big box subwoofers. The value of the big subs is just more deep bass. You could do this with 2" subwoofers if you wanted, the problem would just be lack of good bass. In fact, my design approach for this is likely going to involve largely smaller sealed subwoofers. They are going to be far easier to deal with. They are also cheaper. If I do four 18" drivers, I probably need around 2000 watts each. That means I need four 2-channel amps or two 4-channel amps for this to work and pretty serious power. On the other hand, I could get the same results using 10" drivers if I instead used 10 of them on the front and 10 on the back wall. Those drivers are cheaper and they need far smaller enclosures. It's likely that just 500 watts per driver is plenty. While this would run into a channel count problem, you don't necessarily need every driver to be discretely powered. You could pair them up and utilize them in zones. As long as the zones have the spacing to provide resolution to the upper bandwidth limit you want, they would work fine.
Does this work with transmission line subwoofer? Or does woofer need to be facing out into the room
It can work with any subwoofer. Even Transmission line subwoofers have a source end in which the LF's radiate into the room. It's that which matters, not the actual woofer placement.
What I wonder is, does this approach fight only the longitudinal modes and the ones from the sides are still unhindered? Nevertheless, this approach seems to be very promising and to go far beyond the use of active absorbers, such as AVAA, which never really caught on.
No it works on all modes.
The concept is two fold. Preventative and curative. The preventitive part is to avoid creating modes from reflections off the side walls and ceiling that are problematic. It does that through beamforming. It controls and bends the direction of the LF wave to avoid the creation of those modes. The remaining reflection that beam forming can't address is the length mode. So longitudinal modes are addressed via the cancelation or curative method.
Does that help clarify?
@@PoesAcoustics thank you. Very Hood explination
@@PoesAcoustics A major point. Don't excite them to start off with.