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bro i can buy you a pizero for faster processor, if you want,

not much consumer info is out there on these, I bought on on Ebay and I'm having some problems tuning it in a way only I can hear it. when the audio is clear I can hear it like a normal crappy speaker or with some tweeking it sounds good but never directional. any tips?

So that is why to bring earplugs to protests.

Hey! I have little to no experience with electronics and i'm trying to build a parametric speaker like this one. I only know a bit of C and no C++ at all. Therefore, i'm considering using an Arduino controller instead of the STM32F103. Do y'all think it would be alright? Apart from this, would you say this is an easy project or a rather hard one?

so here is the big question what would I need and how would I do it say if I wanted something a little better audio quality

I made one, but I can still hear it when it's facing away from me, though slightly less

hello all! If an ultrasonic audio beam was pointed at you, in addition to hearing, can you feel it? If so, what sensation would this be?

how about in win 11, do you have to install a virtual machine?

Hi that is interesting, How do you think it will work in flight SIMs? will it be able to fake G-force feeling to some degree?

Just spent a little over $20 to start this project. I got 20 transducers and some higher quality amplifiers, and ive already got a raspberry pi 3 which has a faster clock than the stm32f103. Im excited to get started on this project!

Ultimate trolling potential,hook up a mic to it and you can make people hear voices on the street lol

im here from linus's video

Ah.. this is must be the origin rumor that cause people to wear Tin Foil hat.. so they were on to something 😂

How far can these transmit sound for 20metres? 100 metres?

Can we get another part to this video? Godot 4 now has Rapier and Jolt available for it -- both of these should be significantly better than GodotPhysics and Bullet. Jolt has a fantastic multithreaded islanding system that really shines -- if you spawned cubes in two different places, each pile would run on separate threads (at least, that's my understanding of it). I've seen 4x rigidbodies on Jolt without much issue. Godot starts to die after a set number of nodes no matter what, though, but there's at least one scenetree fix coming soon (pr 94748) that eliminates at least one source of slow down... hopefully we get to see more performant code from the Godot project but they want an easy to develop engine, not the fastest on Earth... and honestly that should be the goal of any engine -- as fast as it can go, no matter the strife to get it there. Thanks for the videos and for making me sad that open source < proprietary almost always :(

Phased Array :-)

g' dow ?

Great video, unfortunately did not work for me. I keep getting an "NVIDIA drivers not installed" error, may be something that only happens with recent version of SD

HI, can you please share your email Id, I would like to purchase this ultrasonic audio laser.

Can this be used to wage sonic warfare on your noisy neighbours next door?

Sorry, old video, but can you block something like this? A friend of mine is being terrorised by a neighbour with one of these things, probably. The guy sends noise to her bedroom at night. Will simply blocking the window work? Thanks for the help.

Can you use it like a LRAD system?

Could this force me to run on my treadmill?

I thought this was being used on me, but they told me I just have schizophrenia. 😅

There is 2 physics engines in godot, I don't know if you tried both of them or not, you missed somethings in Godot Engine

How much for a 7 hz 150 watt variable wave form emitter

OK I will clean this up[ for the overlords. Are you the same gene I hear in v2k? and I've know of a Michael too... Point is your teaching people to gangstalk others and torture us that's treasonous plus are being used to sex traffic kids. your crimnals and nothing hidden will stay hidden we're onto you. So, the question is is or was this worth a jail sentence or worse?

I'd give it a go but the sound seems really poor quality. Does it sound in real life like it does in the video?

How do i buy something like this online?

Dear Mean Gene,We are writing to you regarding the ultrasonic directional sound speaker design you developed. We are two students studying electrical and electronic engineering in Turkey. We reviewed your design and decided to do this project for our graduation project. We have performed the STM-32 boot process and set up the circuit as shown below. However, we are struggling to understand how to power the TC-4427 integrated circuit and have not been able to obtain any sound output from the circuit. Could you please provide us with detailed information on this matter? Additionally, could you share more information with us about the design of the circuit on the breadboard?

So I can stalk the gangstalkers😂

An amazing peoject. I don't have any background in electronics. Could you post a video with a step by step puting toguether? Would really appreciate it

This is why I made my own physics engine, and it beats both of those by a mile (pile of 10K circles on a single thread @ 60 Hz with ~45 FPS), and I am still using a brute-force broadphase, albeit very well optimized. I also partition the world into 256m squares so float precision won’t be a problem at huge distances, which is nice having.

This would be so funny to troll people irl

Now what would you charge to make an ultrasonic dog deterrent that was bark activated following this same design?

Very cool project, this is _exactly_ what you need if you want to communicate with any stupid modern pirates on the seven seas… Even at a distance of several nautical miles, they cannot claim that they did _not_ understand what you have told them ;-) I admit that the technical equipment is somewhat more sophisticated, but it clearly shows that there are real-life use cases for this technology…

Fantastic work 👌🏼👌🏼👌🏼

Can you show how to make a circuit for a transducer transmitter and a transducer receiver as two different pices

what happens when you put this directly to a concrete wall? Can you hear it behind it or it reflects back?

Thanks for sharing! How loud is the bass coming from these speakers?

Short answer, yes.

Do you know how i could make it louder like in the 120-130 db range

Hello

how to do this but in windows?

This is exactly what Havana syndrome is.

I need to build something like this to scare a big colony of tree hanging bats

so unity is good for 3d while godot for 2d? :>

hello! do u feel traction loss and and turning or u feel horizontal roll

WARNING PLEASE READ! These things can damage hearing and cause tinnitus. I sadly figured this out the hard way. I made one of these (6 transmitters, 12V) for an art project. While getting information on how to make one I read that ultrasonic frequencies can cause hearing damage. I got mine to work but it felt like it worsened my tinnitus (I already had it lightly). I thought this was some sort of placebo. Because focusing on the tinnitus you already have can worsen it, so I speculated the thought these things could do hearing damage made my tinnitus worse not the actual thing (stupid me). The next day I powered it up again and I noticed that the ring that damped overnight directly came back. I did tons of research about ultrasonic frequencies and hearing damage and found some info on it causing tinnitus but not a lot. The research on ultrasonic sound doing hearing damage is limited and the worst thing is; that these speakers are in production by some companies. I mailed one of the companies and asked: "I read that these use ultrasonic frequencies and that these can cause hearing damage, is this true?". The response was: "In over 20 years on the market, there has not been a single report of adverse reaction to the ultrasound used by Audio Spotlight technology, nor is there any documentation in the literature about harmful effects from exposure to this type of ultrasound. To be absolutely safe and certain, ********** commissioned a full study overseen by the Center for Risk Analysis at the Harvard University School of Public Health before ever releasing our product to the marketplace. The summary confirmed that the risks of use are no greater than any other loudspeaker" In short, they told me they were safe. I tested it and they are not. It could be because I already had tinnitus but even if that is the case. Stay away from these things they still do damage. It is sad how they say it's safe to use. It could be because they are making money off of it or because it is hard to prove. But please let me be the evidence. Tinnitus is no joke. -Ultrasonic waves are not researched enough to play with (sadly)- My explanation (I am not a professional): The volume we hear these speakers at is way softer than the actual decibels. The frequencies outside our hearing range are extremely loud while the audible sound is not. The loudness of these high frequencies is hard to measure. That is why the internet could not give me a concrete answer about this subject. It simply hasn't been tested well enough. Just like a laser, you can shine it in your eyes and without it hurting it can damage them. Same with this. Someone else described it as: Your eardrums can vibrate perfectly fine at normal frequencies but at ultrasonic levels, you are vibrating them too fast. Just as your arms can go up and down perfectly fine. But when you put them in a machine that shakes them up and down real fast, they will withstand for a while but eventually damage because arms simply aren't made to move that fast. (The machine is the ultrasonic waves shaking your eardrums too fast) Please don't make one of these.