Videos

echolocation

Added Mar 18, 2016 •

Copy this URL:
Embed code:	<iframe class="edlio-embed-player" type="text/html" width="640" height="360" src="//jhs.jisd.org/apps/embed/?v=107585" frameborder="0" allowfullscreen></iframe> Change dimensions

view the video and answer the questions

Show Transcript

science and exciting world of research imagination and the willingness to question everything join us on a strange Journey as five unlikely experiments come together into one astounding Discovery changing our lives for open a door in your mind and step through into the realm of weird connections in this episode will look at the power of the echo how animals use it and how humans can as well opening up the possibilities of navigating by sound instead of sight playing just five weird connections  a researcher has the unique ability to see an fortunity for scientific inquiry in virtually anything even Daisy the duck acoustic engineer Jonathan Hargreaves is fascinated by sound both melodious and bless ultimately Acoustics is is about the human experience which is one of the things that makes the section for loss of service he first became interested in Oxford University Sans theme so when's messages Craigslist what's going on call me magic listen closely as this. Communicates  her quack startles and entertains but doesn't seem to have an echo no big deal for most of us puzzles dr. Hargreaves because his life's work is based on the premise that all sounds have an echo that can be measured  now with University of Salford dr. Hargreaves took his duck inquiry to the next level sound Oak Farm on sweeper sentences I would just proper British measurements on it and we will put some look to see this car this was not an easy sound to capture on tape what can a different from what people masturbate how Cindy spoke with would give the strip but the dog doesn't mean we're just going to have to wait pretty much until it decides to quad car grease took Daisy into an anechoic chamber a room where every surface is covered with sound absorbing material so no Echoes can bounce back Gia was to record Daisy and her purest form a controlled quack on stage 10 zip code Franklin hair Tokyo number to hospice inpatient quarters next Hargreaves lettuce test subject into a reverberation this was the complete opposite of the previous room filled with surfaces that would bounce back any sounds that hit them Saints Row which both what she think would I cut a long time it would anywhere they would be in here I'm going to play the Indiana Coach Chambers first they just show up there's nothing to do actress not going to play the books in the vibration movie  it was the sound that shattered a men Daisy was echoing clear and strong hold that remained was cracking the mystery why don't quack seem to Echo Simplicity Ocean than the dokie no room to try to understand why the dogs quack has no Echo a solution a computer-generated acoustic modeling program to help doctor Hargreaves crack the crack mystery book is the anechoic recording register you can say that the delay of the echo leaves it still slightly overlapping there was no cry when the software speeded up the quack sound wave Hargreaves got the answer he'd been searching for so this is made it shorter fudge light up sounds  you can hear you too things are now quite distinctly separate a duck's quack does Echo but somehow the echo is by the sound of the original quack along sound of sorts of type is often dies away how many rides the two sounds I have like a little bit you don't really hear soundtrack you just hear the whole thing as along the clock so anyone here in this would think the ducks quack didn't back home they think that the clock for bit longer these findings Echo some fascinating new research about Mother Nature's famous flying Reverb machine you know our first weird connection we looked at how a duck's quack hides its own Echo now we'll meet in an who's the master at using the echo to map it surroundings by the bats head but of course we have to use indirect measures we can ask the bat once you think how did you experience that dr. Cynthia Moss is a psychologist with some unusual patients she runs a bat Lab at the University of Mary documenting the amazing echolocation skills of the American fruit bat interested in questions of perception for years and years can I do think that there are analogies between the bats use echolocation for perceiving its surroundings and are you savision using high-frequency sounds to navigate the environment and find food a colony of bats can devour 250 tons of insects lights the fact that the bat so very quickly can move her through dense vegetation avoid hitting trees and still touch its box must have a really rich display of the world using echolocation it turns out that with their highly tuned senses that's produce a detailed audio picture of the world detecting shape size and texture four hits perception of the world's who provides us with a little bit of a window to his perception he's we see that it changes it sounds response to objects in the environment Professor Moss translated bet Echoes into a graphic computer program it's cone shaped pattern represents the sound starting from the bats mouth and spreading out over the environment is an animation of the beam pattern of Bass Pro position can think of it like an auditory flashlight goes back from solid objects each ear picks up specific and slightly different sound characteristics the differences help the back construct a complex Sonic image of the surround World Bean pattern and the directional control gives us some insight to the bats attention to the world where it's looking if you will now dr. Moss was ready to discover just how detailed well we have an obstacle course for the Vats and there are two openings in this very fine that you can see the outline of the opening here and there's a lower opening on the other side and the vat has to find the opening that houses a worm  did Will Rock fire a series of intricate moves that can only be accomplished if the bat picks up precise information about the maze the compartment doesn't have any food in it to the backhoes hungry but if it flies through this opening this compartment houses the worm and again to poop rewarding infrared cameras film The Bats flight  and microphones on the walls record exactly when and where at loud it's ultrasonic calls finally dr. Moss picked out a plump and juicy looking worm and baited the compartment when she released a very hungry bat hit wasted little time adjusting its calls to find a way through the obstacles the bat flew through the complex maze in the world without trouble watch the 3D software it documents the best path slow down by a factor of 10 so you'll as the bat flies towards the net it's changing the direction of the beam in that really means it's changing the direction of its head raging in different directions to sample information from different locations  Professor Moss even went further Annex ring just how precise the bat sense of detection was Chia conditioned it to prefer smooth surfaces over rough once she hung up to time one rock one smooth with a bat be able to tell the difference  now that's making sounds in the general action of The Chew beads  pointing towards textured be now shifted to the smooth read that again it got it  Mother Nature's gift to bats echolocation can outperform all current sonar technology but there's a theory that humans possess it too if only we listen to our own innate ability deep inside in our first two weird connections we looked at why Ducks don't seem to make Echoes and why bats don't want to stop now it's time to find out how humans can tap into this very important mapping system  I think people often surprised that humans can occur. you don't seem to use it in everyday experience good back in all of us some Studies have reported that using Echoes we can actually detect things almost as well as without Vision it could be that we will use that code directions to consciously in 1947 some psychologist conducted a famous study disproving a concept called facial vision the idea that blind people navigated using air currents hitting their face David Edwards is recreating that experiment to find out whether location in humans is the Rio clued blind site that people can find a way around just using a code plain folded is test subjects and ask them to walk down a corridor but stop just before they smacked into a wooden screen setup in their path how could they possibly know where the board was if they couldn't see it we believe that the sound waves actually rise in Pitch Sunday turn the door and that's what's giving people the ability to detect what's that he outfitted them with tap shoes so the high-pitched echo of their stats would be more prominent travels to the door is effective. Today is I know you can tell how close they are just raising that way  would the volunteers be able to sense the location of the screen with their ears alone  who would they sent it in the list make it matter by walking into it face-first  they were told to raise their hands as soon as they thought they could detect the even though they couldn't see the screen all of them stopped long before hitting it 30 Vail Drive next Edwards decided to limit the amount of sound his subjects were able to make we provided them with fluffy socks and cover the walkway in a soft material  he put people in suffix and use the fairy carpet you know what is enough food translate just takes away looks of the sound and should listen to bility to detect opiates  once again he ran the experiment this time his volunteers walk down a furry Corridor when people had the fluffy so they had much much less information from the so by the time they could detect things I got to do a little closer to get the same amount of that code coming back  Dunn-Edwards took the where am it to its logical conclusion this time is volunteers would not be able to see anything here and Echo from their footsteps offensive Blind by denying people sound they have no weapons and therefore they have no ability to detect objects if indeed a who detection is the mechanism  when all shows were eliminated the results were inevitable thanks a sore nose and a red face for this experiment nobody knew exactly how people detected obstacles especially the blind this was able to show that he has to go today mutation that people could locate objects in fact or innate ability may be on par with the best Echo locators around many more studies John old fiction or any humans have this ability but in some cases it comparable with those of bats and dolphins and that's the research that we not moving on to the Past we're looking at the power of the echo from Ducks who don't make 1/2 bats who use it to navigate to people's innate ability to do so people can avoid a large wooden screen using echolocation what can they use it to find something a little smaller that's our waxed weird connection  my sleep is for the Kurio weld when I see was signed what I'm really interested in this is what goes on inside their head next something's recide what is the world look like Note 3 Vision but through hearing it would like to transform into Batman and women if we can take that to the level of files can do and they can perceive distance is a field of millimeters and it means that we have a whole new sensory capability the acoustical engineer design an experiment at the University of Leeds to see if a person could perform a task only would love catching pawf using just sound  he developed a computer program that chirp like a bat using echolocation except in a lower frequency play audible to the human ear house at Paul's travel to the virtual world dances of the Virtual Office and Petco and comes back to you so you can walk around will fly around smoke wild you can pretend to be a box off an outside would be located somewhere in this room and the volunteer using sound alone  Cosmic whole magnetic tracker on top fat that means we can track where Reagan's going inside the Stream listen carefully  that's the sound of the computer simulating the bats chirps the church reflect back off any solid object or virtual one providing an echo clue of the Moss location  can the human volunteer possibly hear the echo from a moth and use it to track down the insect just like a hungry bat Majestic  I think it's Round Here it worked I'm in can indeed make use of Echoes to track down an animal or insect and you'll be astounded at what we can do with that go location under the right circumstances  which fish is very hard to do more than one thing at the same time you called read a book and try to call at the same time however try to call I'm just into the radio science on so if we can I buy the bats use echolocation it means that you can double the number of things that you can do now it's time for connection 5  using echolocation for something of more interest to humans than finding insects these highly skilled air men and women learn to hear like bats for the cameras that we think is technology might be important is free zombie shooter planet watch lots of things going on right of chili we can map to the human older trees face so we can turn right off into Seminole echolocation simulate a string Manhattan look at your screen you can fly the aircraft without having to do too many visual toss to the same time  using this flight simulator dr. Waters is putting his theory to the test  the pilot will try to send some missile coming his way using echolocation his headset will pick up audio Echoes bouncing back from any approaching objects she has this heat-seeking missile that doctor Waters is sending up his tail pipe  the missile is now on a wreck Collision Course I'm right to White on Dish  Bethel minute the pilot changes Direction and a boys the missile strike  using echolocation alone this Pilots this virtual aircraft he didn't just know where the missile was coming from he was able to sense its location and speed in three-dimensional space distinct improvement over visual radar  how is concentration of flying aircraft that I was able to concentrate more on the audio and I think I will get used to coach do that no longer change the concentration of a signal as well as usual we might be on the verge of an evolution and how we interact with our soundings the ability to use echolocation is turning out to be a very natural thing for almost anybody you can take people to have this experience before bring me the streets I look you going to pretend to be about this is what's going to happen with headphones on them how can we do that wine why is do we have that ability Sixth Sense human echolocation in open up all whole range of possibilities from flying aircraft to police work to medical diagnosis Andy I'm hearing is involved echolocation can clewis into a deeper level of perception and understanding The Humble duck quack became a rallying cry for radar human potential in just five weird connections

Uploaded by Debra Hood.

Videos

echolocation

More videos from Debra Hood