WEBVTT 00:00:00.399 --> 00:00:09.240 it's the weirdest thing Elijah can you hear this speaker yeah I can hear 00:00:05.680 --> 00:00:12.120 it somehow my microphone picks up 00:00:09.240 --> 00:00:17.600 nothing right next to it but Elijah can hear it from down the road now sound 00:00:15.040 --> 00:00:24.400 waves are always directional to a degree but this 00:00:19.320 --> 00:00:29.560 thing is on a whole other level perhaps 00:00:24.400 --> 00:00:31.640 magic spoiler no the oddly model B uses 00:00:29.560 --> 00:00:37.280 Ultra rasonic Audio Waves which you normally can't hear and add some special 00:00:34.440 --> 00:00:42.039 sauce to create a directional speaker that's designed to create a private 00:00:39.559 --> 00:00:45.480 listening Zone giving the user a headphon like 00:00:43.399 --> 00:00:50.160 experience is that something people are asking for and what are we giving up in 00:00:47.640 --> 00:00:56.039 return also are there any fun creative ways we could use this technology not 00:00:52.680 --> 00:00:57.719 sure a few things and yes but before I 00:00:56.039 --> 00:01:03.039 tell you about them Elijah needs to tell you about our sponsor hey there you are 00:01:00.640 --> 00:01:07.840 Ridge upgrade your everyday carry with a ridge wallet their new Ridge lights are 00:01:05.560 --> 00:01:12.520 just as functional and even more compact than before use our link and save 10% 00:01:10.560 --> 00:01:15.119 off your purchase and get free shipping with code 00:01:21.960 --> 00:01:28.840 lonus to help you guys experience how cool this thing is we've set it up on a 00:01:26.799 --> 00:01:33.399 lazy Susan in an open area of our warehouse then all you got to do is pop 00:01:31.680 --> 00:01:40.640 on a pair of headphones and you'll be able to hear exactly what we hear with 00:01:35.880 --> 00:01:40.640 the help of our friend Steve Elijah hit 00:01:46.759 --> 00:01:51.920 it that is so weird it sounds like it's 00:01:50.159 --> 00:01:54.960 in the one ear and then it sounds like it's inside my skull and then the other 00:01:53.640 --> 00:01:59.280 ear and then it's gone and then because we've got flat 00:01:57.200 --> 00:02:02.719 surfaces here in the warehouse it actually bounces off of some of them and 00:02:01.200 --> 00:02:06.640 sounds like it's coming from completely different places now alongside the 00:02:05.039 --> 00:02:11.319 greatest song of all time you might have heard a slight buzzing or interference 00:02:08.840 --> 00:02:15.200 or Dropout sound that's because the microphones are picking up some of those 00:02:13.280 --> 00:02:20.959 ultrasonic frequencies that I mentioned earlier but to most human ears it sounds 00:02:18.560 --> 00:02:25.120 as clear as any other speaker you'd find at the local Best Buy how does this work 00:02:23.400 --> 00:02:29.000 and what makes it different from a traditional speaker in a traditional 00:02:27.120 --> 00:02:32.959 speaker two things contribute to the audio that you hear 00:02:30.480 --> 00:02:37.200 the amplitude or how hard the speaker pushes against the air around it 00:02:34.680 --> 00:02:41.360 determines how loud it is and the frequency which is how many of these 00:02:39.560 --> 00:02:46.239 Cycles it completes per second contributes to the pitch Sound Energy 00:02:43.720 --> 00:02:51.239 travels in waves just like ripples in a body of water meaning that when you make 00:02:48.560 --> 00:02:59.720 sound anybody nearby can hear baby no money forget that Melody now we can 00:02:55.120 --> 00:02:59.720 focus or aim it to a degree 00:03:07.599 --> 00:03:15.599 but because the wavelengths of audible sound are so long the waves can travel 00:03:13.360 --> 00:03:20.560 through solid objects and even bend around corners that's why I can hear 00:03:17.599 --> 00:03:25.760 this speaker pretty well from behind it that's why these speakers use ultrasonic 00:03:23.040 --> 00:03:30.400 transducers instead and I can practically hear you guys shouting lus 00:03:27.560 --> 00:03:35.840 humans can't hear ultrasonic frequencies that's what makes them ultrasonic and 00:03:32.879 --> 00:03:40.439 you're right we can't but thanks to some math that I don't understand now and 00:03:38.239 --> 00:03:45.640 probably never will we can alter the amplitude and can modulate our 00:03:42.640 --> 00:03:49.560 ultrasonic transducer array to encode 00:03:45.640 --> 00:03:51.640 audible sound within ultrasonic sound 00:03:49.560 --> 00:03:56.439 now it took decades and the development of sophisticated computer simulations to 00:03:54.040 --> 00:04:02.079 go from the original Theory to this point but now that we're here it 00:03:59.079 --> 00:04:04.760 flipping works and because ultrasonic 00:04:02.079 --> 00:04:11.560 waves have much shorter wavelengths they spread out far less creating a 00:04:06.920 --> 00:04:11.560 relatively focused cone of audible 00:04:17.320 --> 00:04:22.560 sound it's still about 15° meaning that 00:04:20.840 --> 00:04:28.759 at a great enough distance multiple people can hear it but the effect in 00:04:24.680 --> 00:04:30.720 person is really trippy not to mention a 00:04:28.759 --> 00:04:34.120 lot of fun I'm in position where it should be hard for anyone in the lab to 00:04:32.160 --> 00:04:38.520 see me and I'm going to start up a WAN Show I thought someone was talking I 00:04:36.240 --> 00:04:41.560 thought then I'm going to beam it around the warehouse and see what 00:04:49.400 --> 00:04:53.360 happens next Target 00:04:54.120 --> 00:05:01.039 Logistics I don't even know what this plastic is here for it's clearly to 00:04:58.880 --> 00:05:03.639 prevent peep Bad actors like you Elijah's bringing a knife so we can 00:05:02.280 --> 00:05:08.320 control Logistics now we're going to point it through the plastic but first 00:05:05.639 --> 00:05:08.320 we got to troll 00:05:16.120 --> 00:05:22.360 Elijah so confused I can see Jamie okay we're going to go for Jamie we're going 00:05:20.039 --> 00:05:25.479 to go for Jamie 00:05:26.600 --> 00:05:31.639 okay where the how they all find us immediately 00:05:31.880 --> 00:05:39.319 dang it how'd you guys find us so fast I 00:05:35.639 --> 00:05:40.840 heard through it earlier oh dang it well 00:05:39.319 --> 00:05:44.600 you win some you lose some still a lot of fun if we were smart and we really 00:05:42.960 --> 00:05:49.440 wanted to throw people off though we would use the effect where it bounces 00:05:46.919 --> 00:05:53.280 off of flat surfaces creating a really weird effect where it sounds like it's 00:05:51.280 --> 00:05:57.000 coming from the Reflection Point rather than from the location of the speaker 00:05:54.800 --> 00:06:01.639 let me show you what I mean okay Elijah I'm straight at you yep I hear it there 00:06:01.680 --> 00:06:10.639 right there okay what if I bounce it more times I hear it right about 00:06:05.520 --> 00:06:12.080 there yeah and it it's super trippy if I 00:06:10.639 --> 00:06:16.639 did not see you I would think it's coming from the wall pretty wild right I 00:06:14.560 --> 00:06:21.280 mean you'd think after a bounce or two it would sound a lot farther away but 00:06:18.720 --> 00:06:27.919 ultrasonic waves don't attenuate nearly the way that audible waves do so whether 00:06:23.960 --> 00:06:30.199 I'm 10 ft away or 100 ft away bouncing 00:06:27.919 --> 00:06:35.840 once or four times it sounds really similar the question 00:06:32.479 --> 00:06:37.080 now is how far can we go well based on 00:06:35.840 --> 00:06:42.560 what they saw in the intro you're going to have to go a lot further than that buddy all righty poor Elijah he's 00:06:40.479 --> 00:06:47.960 getting his steps in today boys most exercise I've done all year how about 00:06:44.800 --> 00:06:50.720 now yeah I can still hear it how about 00:06:47.960 --> 00:06:55.560 now no I don't hear it oh okay how about if I aim it at 00:06:52.560 --> 00:06:58.759 you I it sounds the exact 00:06:55.560 --> 00:07:02.000 same I hear it totally fine okay keep 00:06:58.759 --> 00:07:03.440 going oh oh my goodness it's crazy to me 00:07:02.000 --> 00:07:09.400 how it's been sounding almost the exact same volume the whole way how about now 00:07:06.400 --> 00:07:10.680 I can still hear it that is wild we'll 00:07:09.400 --> 00:07:17.800 keep going a little bit more very faintly but I can still hear 00:07:15.479 --> 00:07:21.599 it that is very cool we're almost at the end of our parking 00:07:19.160 --> 00:07:25.080 lot yeah you can still hear it I can still hear it yeah and Andy can hear it 00:07:23.280 --> 00:07:31.520 from back there still oh 00:07:27.960 --> 00:07:31.520 yeah going 00:07:32.280 --> 00:07:37.280 there's a car in the way but we are from end to end on the parking lot here's the 00:07:35.639 --> 00:07:42.120 Google Maps image to show you how far we are uh let's see if I can still hear it 00:07:40.599 --> 00:07:47.479 do you hear it Andy I hear the truck you might as well 00:07:44.759 --> 00:07:50.720 come back oh my God this is freaking hilarious they're standing in that 00:07:49.159 --> 00:07:55.240 corner with all those cars around them and I'm kind of moving it around a little bit it's got to sound like it's 00:07:53.199 --> 00:07:58.520 coming from like freaking everywhere there was a split moment where all the 00:07:57.360 --> 00:08:02.120 way at the end of the parking lot I heard like one or two notes at that 00:08:00.599 --> 00:08:07.520 distance the issue you're running into is lining it up not even that you can 00:08:04.400 --> 00:08:10.240 hear it anymore that is super cool but 00:08:07.520 --> 00:08:14.599 ultrasonic waves do have a downside they get blocked very easily you can see I'm 00:08:12.840 --> 00:08:17.639 sitting here chilling listening to music all I got to do is put this piece of 00:08:16.000 --> 00:08:22.759 paper in front of it and 00:08:19.680 --> 00:08:26.840 H and there's more remember that sound 00:08:22.759 --> 00:08:26.840 Jammer that we bought on AliExpress 00:08:33.399 --> 00:08:39.919 in theory it can be deployed stealthily but in practice we found that people 00:08:37.760 --> 00:08:45.760 with sensitive hearing sorry sorry sorry can pick up those high frequencies and 00:08:43.560 --> 00:08:50.360 because those ultrasonic frequencies need to be very high amplitude for the 00:08:48.399 --> 00:08:55.160 encoding to work meaning they're very loud it can create an uncomfortable 00:08:52.680 --> 00:09:00.160 feeling for some people and especially some animals with all that cool how does 00:08:58.120 --> 00:09:05.240 it work stuff out of the way what are these even for I mean I guess as a gamer 00:09:03.079 --> 00:09:08.880 having a personal private listening cone without needing to wear anything on my 00:09:06.640 --> 00:09:15.480 head would be kind of liberating but at this price yeah it's more for commercial 00:09:12.360 --> 00:09:17.760 installations you know showrooms museums 00:09:15.480 --> 00:09:23.079 and the like so you can step in front of an interesting piece learn more about it 00:09:20.640 --> 00:09:29.000 available now at LTT Store.com and when you're done you walk away and the audio 00:09:26.399 --> 00:09:32.920 is gone with a cleverly designed Gallery including soft surfaces to minimize 00:09:31.160 --> 00:09:37.440 Reflections you can offer a pretty engaging experience for your customers 00:09:34.959 --> 00:09:41.000 or patrons oddly the makers of this particular speaker focus on digital 00:09:39.079 --> 00:09:44.959 signage and advertising but they also highlight some pretty creative uses like 00:09:42.920 --> 00:09:49.120 this one integration in a playground haunted house pretty spooky what's 00:09:47.480 --> 00:09:52.360 really cool is oddly is working on cutting the costs but if you don't want 00:09:50.760 --> 00:09:55.720 to wait there's actually tons of videos online showing people building these 00:09:53.880 --> 00:09:59.120 speakers for themselves including this one guy who actually made it look like a 00:09:57.200 --> 00:10:03.760 little gun to point at a Target I don't know it's kind of cute just like this 00:10:01.240 --> 00:10:07.640 cute segue to our sponsor thanks to Corsair for sponsoring this episode 00:10:05.399 --> 00:10:12.440 Corsair custom lab allows you to create a gaming setup as unique as you are 00:10:10.360 --> 00:10:16.279 start with a product like their K65 plus wireless keyboard and select from a 00:10:14.120 --> 00:10:20.240 variety of different themed key caps to match your style from there you can add 00:10:18.079 --> 00:10:23.600 a mouse and a mouse pad to complete the look course sah handles all the heavy 00:10:21.839 --> 00:10:27.200 lifting for you just make your Custom Creation and they'll build it and ship 00:10:25.200 --> 00:10:30.360 it right to you learn more at the link in the video description if you guys did 00:10:29.040 --> 00:10:38.360 enjoy this video go check out the recording Jammer video that one was super cool as well and helped cover up 00:10:33.959 --> 00:10:38.360 some hot takes that lonus had