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Quack Science: Do Ducks' Quacks Echo

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science and exciting world of research imagination and the willingness to question everything join us on a strange Journey as five unlikely experiments together into one astounding Discovery changing our lives forever 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 sound instead of sight all in just five weird connections a researcher has the unique ability to see an opportunity for scientific inquiry acoustic engineer Jonathan Hargreaves is fascinated by sound both melodious and less so ultimately Acoustics is is about the human experience which is one of the things I'm exercising for University swizzz concessions so when he started his Praises now what what's going on copy Magic Ashley as this duck communicates Turk wax startles and entertains but doesn't seem to have an echo no big deal for most of us but puzzles doctor Hargreaves because his life's work is based on the premise that all sounds have an echo that can be measured University of Salford dr. Hargraves took his duck inquiry to the next level we found dog from a local farm and we brought into a scientific cilities I would just proper Rick Ross measurements on it and we will have to save this this was not an easy sound to capture on tape doesn't rain we're just going to have to White's pretty much until it decides to clock into an anechoic chamber a room where every surface is covered with sound absorbing so no Echoes can bounce back it was the record of the Wild song Try to capture device at okie dokie next subject into a reverberation chamber this was the complete opposite of the previous route that would bounce back any sounds that hit them I'm going to play the duck in the anechoic chamber first I'll trade you sure there's nothing to do this no because I'm going to play the choking the Federation movie it was the sound that shattered a myth Daisy was echoing clear and strong hold it remain was cracking the mystery simplest actuation the booking a room to try to understand why the dogs clock has no Echo is solution a computer-generated acoustic modeling program dr. Hargreaves crack the quack mystery blue is the anechoic recording registry Echo you can see that the delay of the echo leaves it still slightly out of the life and was the original choir when the software speeded up the quack sound wave Hargreaves got the answer he been searching for so this is made it shorter play that sounds you can hear the two things in out a duck's quack doesn't Echo but somehow the echo is masked by the sound of the original quack quack because the clock is a long sound the social type is off and dies wife on when they occur arrives the two sounds over like a little bit you don't really have a separate you just hit whole thing has a long black soap anyone here would think the ducks quack echo died sing these findings Echo some fascinating new research about Mother Nature's famous flying Reverb machine in our first weird connection we looked at how a duck's quack hides its own pack up now will meet an animal whose a master at using the echo 2 map its surroundings you want to get inside the bass head as much as we can but of course we have to use indirect measures we can't ask the bat what 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 Maryland documenting the amazing echolocation skills of the American fruit bat Chrisley have been interested in questions of perception for years and years and I do think that there are analogies between the bats use echolocation for receiving its surroundings and our use of vision using high-frequency sounds to navigate the environment and find food a colony of bats in devoured 250 tons of insects a night it's the fact that the bad so very quickly can maneuver through dense vegetation avoid hitting trees and still catch its bugs 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 used for its perception of the world so provides us with a little bit of a witch to it's perception cuz we seen it it changes it sounds in response to objects in the environment Professor Moss translate the computer program its cone shaped pattern resent the sound starting from the bats mouth and spreading out over the environment of the beam pattern of the nation and think of it like an auditory Flash The Echoes bounce back from solid objects into the large bat years each year picks up specific and slightly different sound characteristics the differences help the construct a complex Sonic image of the surround World The Bean pattern and the directional control gives us some inside to the bats attention to the world where it's looking if you will now dr. Moss was ready to discuss detailed picture of bat Converse through Echo navigation and there are two openings in the outline of the opening here and there's a c are opening on the other side and the bank has to find the opening of the houses a worm it will require a series of intricate moves that can only be accomplished if the bat pics precise information about the maze in this case 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 award infrared cameras film The Bats flight and microphones on the walls record exactly ultrasonic calls juicy looking worm she released a very hungry bat adjusting its calls to find a way through the obstacles the music about trouble watch the 3D software as it documents the best path slow down by a factor of 10 so you'll see as the bat flies towards the natch it's changing the direction of the being is that really means a change in the direction of its head different directions to sample information from different locations Professor exploring prefer smooth surfaces over rough ones smooth would that be able to tell the difference now that sounds in the general one of the Cheap Eats pointing towards textured feed now it's shifted to the smooth feed and again it got it Mother Nature's gift that's echolocation can outperform all current sonar technology but there's a theory that humans possess it to if only we listen to 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 officer tries The Human Experience he believes there's a bit and all of us some Studies have reported using Echoes we can actually detect things almost as well sweetheart Vision so it could be that we all use that code detection subconsciously in 1947 some psycho just conducted a famous study disproving a concept called using air currents hitting their face David is recreating an experiment location in humans is the real clue to blindsight this tournament is I need to find out where the people can find a way around just using it cuz his test subjects and ask them to walk down the corridor but stop for they smacked into a wooden screen setup in their path how could they possibly know where the boy was if they couldn't see it we believe that the sound waves actually rise in Pitch site I hit the board and that's what's giving people the ability to detect what's that when the top shoes creates a sound wave travels is it  back today is I know you can tell how close they are just by using that wave would the volunteers be able to sense the location of the screen with their ears alone Sentinel good manner by walking into it face-first they were told to raise their hands as soon as they thought they could detect the screen even though they couldn't see the screen all of them stop long before hitting it stay low down take a look better next Edwards decided to limit the amount of sound his subjects were able to make provided them with fluffy socks and cover the walkway in a soft material we put people in traffic and use the fairy carpets you notice in the phobia is likely the sound and should listen to once again he ran the experiment this time his volunteers record or they had experiment conclusion socks a furry carpet and Defenders his volunteers would not see anything from their footsteps largest blind but knowing people sound they have no Retros and therefore they have no ability to detect objects if indeed a coup detection is the mechanism eliminated the results were inevitable a sore nose and a red face before this experiment nobody knew exactly how people detected obstacles especially the blind this was able to show fatty how's it going today Easy rental location that people could locate objects in fact or innate ability may be on par with the best Echo locators around many more Studies have been done or the quick showed any humans have disability but in some cases compatible with the bats and dolphins and asked to reset the way now moving on to look at looking at the power of the echo from Ducks who don't make 1/2 bats who use it to navigate to people's so people can avoid a large wooden screen using echolocation what can they use it to find something a little smaller that's our next weird connection is pretty cute as well but Ashley was signed what I'm really interested in these days what goes on inside the head when I see something suicide what does the world look like Note 3 fiction but through hearing it transforms into Batman and women if you can take that to the level of plants can do and they can perceive distance is a field of millimeters that it means that we have a whole new sensory capabilities into his experiment at the University of Leeds to see if a person could perform a task that only affect would love catching a moth using just sound he developed a computer program that chirp like a bat using echolocation accepting a lower frequency audible to the human ear it comes back to you so you can walk around fly around in the spiritual world that you can pretend to be a back to the house and outside the virtual and the volunteer would try to find it sound alone magnetic tracker on top of that means we can track where aliens 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 it worked a human can indeed make use of Echoes to track down an animal or insect and you can do with echolocation circumstances which vision is very hard to do more than one thing at the same time you called read a book and drive a car at the same time however you can drive a car and listen to the radio at the same time it means that you can double the number of things you can do now it's time for connection 5 using Petco location for something of more interest to humans than finding insects could these highly-skilled hair men and women learn to hear like bats coming home early we can map to show poetry space so we could turn right off into so no echolocation you would hear you laid out straight you wouldn't have to look at your screen you can fly the aircraft without having to do too many fish with sauce 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 head will pick up audio Echoes bouncing back from any approaching objects such as this heat-seeking missile that doctor is sending up his tail pipe the missile is now on a Collision Course how to write the white on the nation at the last minute the pilot changes Direction and a boy's the missile strike using echolocation alone this Pilots saved his virtual aircraft he didn't just know where the missile was coming from he was able to send its location and speed in three-dimensional space distinct improvement over visual radar I was concentrating on flying jacked off and I think I would get used to be able to do that for the longest time today with your concentration we might be on the verge of an evolution and how we interact with our surroundings the ability to use echolocation is turning out to be a very natural thing for almost anybody you can take people he never had this experience before bring me up the street so I can pretend to be about this is what's going to happen put the headphones on them and can we do that why why is do we have that ability station can open up a whole range of possibility from flying aircraft to police work to medical diagnosis anytime hearing is involved at the location can clewis into a deeper level of perception and understanding The Humble duck quack became a rallying Cry For Gray human potential in just 5 connections

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Quack Science: Do Ducks' Quacks Echo

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