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PeaceFar9770 t1_iy34y9c wrote

Would like to know what they sound like? Do they have any bass? Or would they be tinny.

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BrianRostro t1_iy3872v wrote

They already have this technology out there but im also curious to know specifically what LG can do with it. Just like Sony, these guys can work wonders with hardware

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caiusto t1_iy3ah8x wrote

I think Sony has a system of speakers that do something similar, they're capable of making surround audio and you feel like there's Audio coming from behind even when there's no speaker behind you, it's kinda crazy.

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Thathappenedearlier t1_iy3i2w8 wrote

They do they also have the ht-a9 system which you can place 4 speakers at any height and any spacing as long as they have a general 4 corner layout and they calculate how to make sound and they call it a virtual 12 speakers

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luckyfucker13 t1_iy57oev wrote

I’ll have to dig into this, out of pure curiosity. “Hearing” a phantom center speaker is a real thing in music, and is part of how soundbars get their stereo image, but I’d like to know how they’re processing the audio to create such a wide spread. Pretty cool stuff!

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Tricamtech t1_iy6zvhz wrote

It’s all time and phase based, in addition to multiple drivers that are individually controllable.

If you are interested in it - look into Klang in-ear monitoring; it’s designed for live music but can be used for all kinds of things.

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HeavyLogix t1_iy5mqlj wrote

I’m not going to dig into it for Sony but will add that phase usually does this. If you have one speaker in phase and one out of phase on the opposite side the sound “comes from everywhere” which is undesirable when it comes to setting a front sound stage.

I’d imagine if you those Sony units use multiple drivers that could switch phase live by driver it could use it in cool ways.

Totally bullshitting here though

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BrewKazma t1_iy3pemw wrote

They have that on ps5. It is software based. It can make any soundbar sound like it has speakers behind you.

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Bacalacon t1_iy4250r wrote

PS5 3D audio is quite an improvement but I honestly never felt sound coming from behind, just mostly from the sides

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BrewKazma t1_iy44qiy wrote

On mine it seems to come from everywhere. Its kind of off-putting .

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Bacalacon t1_iy4lbam wrote

Man I wish that happened with my soundbar. On headphones it's glorious tho.

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trapezoidalfractal t1_iy5lgc2 wrote

The worst is when a game has really high quality chatter as ambient noise. So many times I’ve taken off my headphones and looked around because I swore I could hear someone right behind me.

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DoomBot5 t1_iy5ou4l wrote

Usually that's the results of room acoustics. Software can't fix everything.

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BrewKazma t1_iy5w4cq wrote

I mean, when I got in the beta, and turned it on, it was radically different. The software was very much doing something, and I wasnt in a different room.

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DoomBot5 t1_iy5z8kf wrote

For sure, it's trying. You just can't fix everything with software.

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BarryTGash t1_iy59rdn wrote

It might be an implementation of HRTF - head-related transfer function.

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BrewKazma t1_iy5a1m8 wrote

That is exactly what it is. The new Tempest 3d engine.

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BarryTGash t1_iy5ltqb wrote

Oh, cool. I'm not familiar - will go and investigate.

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ImGCS3fromETOH t1_iy3u9zc wrote

That's just what I need while I'm driving my car in traffic. Sounds unexpectedly coming from behind me.

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tinydonuts t1_iy4r4of wrote

Car manufacturers are missing a large untapped market here. They could start marketing their 100k luxury cars as affordable tiny home replacements given that the median new home sale price is now north of 400k. Just pop a 4K screen in for the windshield and add a coffee maker and you’re good to go.

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littlebitsofspider t1_iy69hvc wrote

I've always wanted to shit in a BMW without being ejected from the dealership.

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Few-Swordfish-780 t1_iy51fbg wrote

You know all cars have rear speakers already right?

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ImGCS3fromETOH t1_iy6fy60 wrote

Not surround sound systems though. At least not the ones I drive. Hearing speakers that are mixed and balanced but still playing the whole audio track is one thing. Hearing isolated sounds from the rear speakers would be something else entirely.

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swettm t1_iy4014p wrote

These types of features (spatial audio, HRTFs, beamforming, etc.) are actually pretty straightforward and well known techniques, and like machine learning, we're just now getting to a point where we have the hardware to properly implement them.

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[deleted] t1_iy3pio4 wrote

[deleted]

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cboogie t1_iy3y6mc wrote

You seen the project where you use the pink foam board insulation and a basic Dayton transducer on it?

Kinda look dumb and it seems like you need the right room and space but apparently they stack up pretty well against a pretty expensive cabinets and have a pretty flat frequency response.

I watched a YT vid where a very skeptical dude built and tested them and he was very surprised in the results.

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[deleted] t1_iy45np2 wrote

[deleted]

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ImReadingYourProfile t1_iy4gomp wrote

Not sure if it's the exact video the other guy was talking about but this guy and his other speaker videos come to mind.

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[deleted] t1_iy4igh6 wrote

[deleted]

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jawshuwah t1_iy4v81u wrote

I also skimmed. Pretty neat!

He does mention the need for a sub

I can definitely see the appeal of a large minimalist flat panel speaker. My girlfriend probably wouldn't let me put speakers in the living room, but these she would like design wise.

Could you not hang it like a picture frame, so the string is hidden behind?

He says they cost $30 to make

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r0b0c0d t1_iy4plbf wrote

Yeah they're going to have to design and tune parts of the car. Honestly it doesn't seem great; seems more likely to rattle and have weird characteristics at different volumes.

I will say, however, than the 'speakers' on the surface pro are kind of crazy. Pretty much all portable devices these days use the device itself to resonate. Not sure who the first one to do it was, but I'm honestly kind of a shocked at how good the sound is on that device, when it's being driven by these little things.

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djk29a_ t1_iy3w4iq wrote

There’s hopefully some feedback mechanisms for tuning the signal for better fidelity and giving some tips to users for better frequency response options. Hell, a calibration system that guides users to put the transducers on different surfaces and places would be pretty neat if you ask me. Something on the floor of a car or the dash would work better for sound than windows, especially because rolling the windows down would mean no more speakers.

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ObscureD_Lee t1_iy4lwdv wrote

We need to lower our standards for sustainability. That needs to come first. If it means not making speakers in the masses then it’s worth it. Saving a huge amount of mfg costs and environmental waste for something that isn’t required by law to be apart of the car.

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kmc307 t1_iy4sven wrote

What the hell are you talking about? lol

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ObscureD_Lee t1_iy4uxnh wrote

Manufacturing a speaker isn’t worth it anymore if this works. Quality isn’t to be a subject if the words are understandable. Putting mfg and waste at the front of a decision on a feature. No need to build speakers in cars if these work good enough. It makes a traditional speaker obsolete.

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[deleted] t1_iy4x121 wrote

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ObscureD_Lee t1_iy4y85o wrote

If this works good enough then there is no logical reason to create waste from other methods. I play music, I def. Know a good speaker cab from shit. Or nice JL sub vs kicker. It’s not needed and that’s what people are missing. If it’s good enough for a radio then we don’t need more. Need, not want. Want can be aftermarket.

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BePart2 t1_iy5u1fq wrote

Who listens to the radio anymore? Everyone I know uses it to stream music from their phone.

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tpneocow t1_iy3n2eb wrote

"How can I increase the low frequency (bass) sound being produced by the exciter?

Bass and low frequency sound are enhanced greatly when using larger panels or increased areas of substrate. Additionally, using a heavier substrate will allow deeper bass to be achieved, but at the expense of reduced treble output."

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MyNameIsRay t1_iy3umt4 wrote

Haven't heard these in particular, but I have used a bunch of transducers that turn solid panels into speakers (Clark Synthesis/Aurasound/multiple Dayton transducers, and the bass-specific IBeams and Buttkickers), and they all have the same issue.

The material you stick it to has it's own absorption/reflection/resonance properties, which become audible when you use it as a speaker. You can easily tell if it's attached to metal, plastic, wood, or glass. It doesn't sound "like the panel is a speaker", it sounds like "a speaker behind the panel".

For bass, thicker/stiffer materials (or those with less surface area) need more power, which means it effectively reduces the output when used with the same power. Same transducer, same signal, will have wildly different response curves if attached to a side window vs a rear window, or a window vs the dashboard.)

For highs, basically everything absorbs high frequency sound (that's why you tend to only hear low frequency bass outside a loud car or club). No matter what, the high end is neutered, they all lack the "sparkle".

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chum_slice t1_iy3q1vx wrote

I remember the LG G8’s speakers needed to be on a surface the more hollow the surface the better so it could amplify. It was neat but the iPhone speakers and HTC boom sound (front facing grilled speakers) were noticeably better.

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Tyler_Zoro t1_iy3uy9k wrote

It's not the pitch that is the concern, so much as the "shape" of the sound.

Panels can be turned into incredibly good speakers (example) but that's when they are flat. The surfaces in a car are going to created much more complex wave-fronts because they aren't flat.

I presume that what LG is showing off is some sort of system that compensates for this. I wouldn't be perfect, but it could potentially be good enough to improve on the speakers you can otherwise get in cars.

Of course, 17 year olds will use it to vibrate the rivets out of their cars because that's what they do.

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llortotekili t1_iy44d45 wrote

Bass requires surface area and excursion (in and out movement) to be reproduced with volume. You can eq to make it more pronounced in comparison to the other frequencies, but you are still limited by the speakers physical characteristics for how low and loud they can play. Judging by the picture,these could maybe play down to 250-200 hz with good output. That's low enough to be a good midrange speaker, but it will still need a woofer to cover bass(20-80hz) and midbass(80-250hz). The good thing about speakers like this is that it allows for an engineer to design a speaker system with very good imagining. They can place these in spots in the vehicle where the sound should actually be coming from. With DSP(digital sound processing) they will be able to place these in a way that lets a car sound like it has a very wide soundstage. Doors for the widest sounds, the widest parts of the dash for most left and right content,and in the center of the dash for center stage content. Bass frequencies aren't as directional as the frequencies these will play so woofers in the doors or inside the bottom of the dash will sound convincing still. Sorry for the text wall, sometimes I get a little too nerdy about audio. Also, I'm going by the picture, didn't read the article. Edit: skimmed the article, what I said seems to be spot on. I would love to see a response graph for these.

TL/DR; They won't produce much bass, but they will allow for accurate sound placement in the frequencies that count for directionality.

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Verbal-Soup t1_iy4df1d wrote

Yah, I don't care about their *speakers if they aren't willing to make a video showing what they can do lol.

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gooftrupe t1_iy4n6en wrote

The frequency response of typical transducer/actuator speakers, as I’m familiar calling them, rely heavily on the material they are mounted to. The EQ can be tuned to account for this, but a good one should have high fidelity down past 200 Hz. That may not be low enough for some people but I only stop there as I haven’t actually seen the data below 200 Hz.

I can’t yet find the specs for the LG TASS, but once they’re available I’d compare to the linked transducer below, which has wonderful fidelity.

https://soliddrive.mseaudio.com/sd-1-ti.html

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Capitain_Collateral t1_iy4onop wrote

I have used similar speakers for certain designs - really depends on what you put them on - both in terms of material and geometry.

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ConditionNo922 t1_iy5vyoj wrote

Dude! Tinny is the new vinyl!! If you don’t hear tin in your music and love it there is something wrong with it you.

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Oscarcharliezulu t1_iy7e2qu wrote

I need some deep throbbing base up through my seat when I listen to Black Sabbath!

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