about here is not only disorganized violence, it's not only terrorism. it's politics. founded over 150 years ago. it's repeatedly died out, but always been resurrected. the ku klux klan starts may 11th on d. w for control science program. welcome to tomorrow today. hello v comes to play, it's look on. she will not be at our by that might have m l m because we measure let island will pull out those videos. obviously on foot. this week we share the microphone with a few of our d. w colleagues to welcome you to the show of course, but also to get sample recordings of a variety of voices. except mr. attorney here we go and innovative prescribe. can you tell from mirrors voice when george okay,

sorry. we extort the you. i'll go get us your saw. you saw the door movie up us. you know what i mean? and from once, i guess i'd say i'm enthusiastic. i'd pack myself has been quite diligent. i think i'm also quite light hearted to does purpose voice reveal those traits. what's our voices? sorry about our characters that and mo, coming up with welcome to tomorrow to day this science show on d. w. a recent study found that people with a deeper voice were more likely to be extroverted. the research looked to see if there's a link between vocal characteristics and personality traits. one thing the study found is that personality can, at least in part, be expressed in the tone of a person's voice. so what does someone's voice say about them?

innovative software analyzes vocal characteristics. is this man adventurous? and why is this woman introverted? what about him? beyond shula doesn't know any of these people, but he can provide remote insights into their characters. all he needs is a voice sample. all the i t specialist is developed an intelligent voice analysis system, and hyphen. we just need a few words to analyze personality profiles and emotions. 70, eager to test that claim. we ask catalina, dog and robin to speak into the computer for us. roughly, i thought the computer uses those brief sound holes to analyze what are called the big 5 personality traits. as i may, it's in the 1st trade is openness that applies to experiences and experimenting with new things. and then there's conscientiousness, which is self explanatory. and on the 3rd trade is extraversion or her sociable

someone is hagley, agreeable in us, determines how empathetic someone is and how well they work in teams. fernando from the final tre does neuroticism which relates to other person, is calm or more emotionally unstable douglas lobby. first, among the smartest honest i duction deck seems to be exceptionally interested in experimenting. he's very open to new experiences, nor is also open to trying out new things. yeah, sure no, not a good start for the computer. dirt is always on the go. he's an avid beekeeper in history time visit yoletta garcia's mom. he's also an actor with a wide range of interests. it's awesome. bush vishna, do our voice is really reveal so much about our character according to beyond

shola. yes. in fact, he says he can even diagnose illnesses via the voice recordings is to miss his file of the voice really is the window to the so if we can tell a lot about moods and ailments, sicknesses as well as ongoing changes to our health secretaries and out that's because the process of speaking involves practically the entire body. we use our lungs are app pipes, and of course the larynx which contains the vocal chords. that's where the voice sound is produced, and that sound is varied by movements in our tongue, lips and facial muscles. the breathing and exhaling. we also use muscles in our chest and stomach area, including the diaphragm in total more than $100.00 muscles used to produce a voice, as well as numerous regions of the brain. feelings of tension, pain, fear, or depression, affect that complex combination of factors which in turn alters the sound of our

voice. and that also happens due to illness damage. parkins on the parkinson's isn't euro degenerative disorder that affects motor skills. a lot of torture on among the early symptoms is an impact on the small muscles we use to produce a voice within in contrast to the voice of a healthy person. ah, the voice of some one with parkinson's might be hoarse. ah, research is working to determine parkinson's in its early phases from voice analysis. they've also been able to identify other disorders like autism, a, d, h, d, and depression. the program is accurate between 70 and 90 percent of the time. it works because they have a database of hundreds of voice samples from diagnosed patient and someone sits on him back to our personality test with doug, besides openness,

which are the traits has the voice analysis system attributed to him. directly here, guns law took has a slight tendency towards introversion, that means he's a bit happier alone than when he's around the people. lot of the missile would care, would probably surprise people who don't know me well, but i really liked being on my own. another bull's eye for the computer. if you it will attest, work so well on concertina. ah, she, i'm working in her and show up in tokyo and in her cafe. her voice seems very extroverted. i think the him won't of him. i'm growing. and when i talk to my family or my husband and my voice keeps getting louder, a lot of people think or fighting, even though we're not about to see me. so let's see what the computer reckons over there. shake the cutter in a few minutes and compared to dirk, we can see that katerina is pretty balanced often as of course,

despite the fact that some people might have a different perception of her voice. you know, it's actually quite balanced. indian wells english might. in fact, she rates as average across the big 5 and them into yes. somewhere in the middle. yeah, i'd agree dang the computer. got it right again. what about robin? he's currently planning a trip to nepal for hiking tore, and in general, he's the spotty type and ambitious controls. i got a lot of thought into what i do and i like to keep things under control. a lot of my friends can confirm that stating to myself, i won a couple of, oh, fun, fun of natal applewood van reynolds with hobbins. we are done. we take a look at robins values. we see that his extraversion does deviate from the average low. according to the voice analysis robin is quite introverted and self reflective

. the level of his other personality traits on average. but robin has a totally different opinion of himself. establish, i see myself a significantly more conscientious and open and agreeable aunt on stella and fin. did the computer get it wrong this time or doesn't know us better than we know ourselves. the accuracy of the personality test is pretty high, but the human psyche isn't completely transparent, at least not yet. when we speak, we generate vibrations in the air that spread out in sound waves. the speed at which those waves move depends on the temperature and pressure of the surrounding air. in dry air at 20 degrees celsius sound can travel at 1236 kilometers an hour. that brings us

to this week's view question, which comes from now. he medina in paraguay. why is sound slower than light? during a thunderstorm we see lightning immediately, while thunder is only heard after a brief delay. it was albert einstein who 1st discovered that nothing moves faster than light. zooming through the vacuum of space and 300000 kilometers per 2nd, light waves don't need a medium to carry them. like drops of water, they spread out in all directions. this also applies to sound waves with loud music causes the membrane of loud speakers to vibrate. these vibrations

cause the air molecules in front of the loudspeaker to vibrate to creating sound waves that emanate from the source of the sound. it's like balls floating on top of a pool of water that begin bobbing up and down when a child swims by. once the child moves on, the balls is slowly come to rest again. a sound needs a medium to carry it. ringback in the air, it travels 340 meters per 2nd. in water and sound reaches nearly 1500 meters per 2nd. that's because water is denser than air. and in concrete, it travels at 3700 meters per 2nd, the denser and stiffer a material. the faster the sound waves can reverberate through it. but space is a vacuum. there is no air, so we wouldn't be able to hear

a guitar. because sound waves, don't forget, need matter to transmit the vibrations. as a result, sound waves can never move as quickly as light. ah, if i was let is read why i wish to you of the science question. then send it in to us by video text or voice mail. if we answer it on the show, we'll send you a little surprise as a thank you. come on. just ask you can find us on the web at d, w dot com slash science and on twitter. welcome to hotel guy. what time is brent with visitors checking into this hotel, have to interact with robots?

it's something most guests need a while to get used to. but in the future, robots and service roles could easy become commonplace. assistance. but don't stand on 2 legs already quite stand it and even threatened to supplant out 4 legged friends, alexis switched the light on his done. did you sleep well? a google this, could you make me a coffee? i'm on it. tell me. once tommy's closest companion valid, he could find himself playing catch up in the future. man's best friend may have to compete increasingly with the likes of alexa serie and other virtual assistants are sorry, last night was a nightmare. again. what happened? you seemed down how about a joke to cheer you up?

ah, right now, it's still the stuff of hollywood that we could just talk with our virtual assistance and have them fulfill our every wish. but perhaps one day our furry companions might be replaced by virtual assistant, like alexa. alexa, thankful the nasal spray doesn't you always know what i need right when i need it? no problem, tommy. i've got to know you inside and out. is this how things will be in the future? will man's best friend be replaced by virtual assistant? nicole kramer is convinced that even though we're not that far yet, we could be soon. at the university of deuce berg essence. she researches how talking robots and virtual assistant influence our emotions as in the hardest part

assist. today's virtual assistants are very good at answering questions on a relatively narrow range of topics. until often i will. the kinds of questions typically posed to these devices and log in with most people use assistance like alexa to play music ashby ansolaski, that's pretty standard these days. we ask questions and thanks to artificial intelligence, virtual assistant, answer immediately. alexa, how do i get from here to cologne? dinged the fastest route is 53 minutes via the a 3 and the b. 55 a. i'm a fairly normal exchange, but we're a long way off from communicating with machines of fish bosses them in which these devices still don't do particularly well is engage in any kind of small talk intact swan solution. tired of the machines, communication capabilities are still very limited. to phone, call a 40 day yesterday guest. yesterday i had pizza. how about you? on 2 light can unfortunately i can't taste anything. so i can't really judge,

but as long as you liked it, that's what matters. yeah, was his teammate. but nicole kramer prove with her experiments that even this limited form of communication is sufficient to provoke a behavioral response in human test subjects. that was a fallacy. assistance can elicit social reactions in as pretty easily and guns. an important element that we've seen in many studies is language and get awakens. things inside of us, like our natural communication skills and desire for social interactions. i'm sorry. what do you like doing most disc? the same thing if you talking to someone on the other side of the screen for you, most of have you ever been in love and no one ever, but it sounds fascinating. oh, today's virtual assistant communicate with ready made answers. an actual

understanding of language is much more complex, but artificial intelligence enables them to learn more as they communicate with us and keep developing on their own. in the process, they gather huge amounts of data without being monitored to that could make them extremely profitable blanket. i don't think she responded to my 1st name, didn't in 2018 amazon, get a patent for technology designed to recognize a person's physical and emotional state by a voice analysis and then generate advertisements accordingly. so in other words, if alexa determines that its owner is ill in a bad mood or even depressed, it offers to order various products to help linux. alexa, what's the time? was it's 6, 12 pm. can i order you something to make you feel better? a funny movie st. john's walk tablets z, siri. how's you like me? i had my go deeply, double click,

so amazon has patented the process of identifying our physical and psychological well being. alexa listened intently and recommend suitable products on amazon or dish. also in today, there are many opportunities to develop and improve the services, but virtual assistance provide photography from vito's. so for beth, um, but on an ethical level, we have to ask ourselves if these subconscious reactions that we've observed are open to abuse. in addition to users moods, the patent also allows alexa to compile other, including browsing, history, clicks, shopping information, and additional metadata. all of which helps to suggest suitable advertisements. oh, but for the time being varsity will remain tommy's best friend, alex alexa lights out. ah, we asked you what you think about virtual assistance, like siri or alexa, and whether you use them in your daily life. diego says he does,

because alexa understands his taste in music and even knows that if she recommends could a recon sing a bad bunny, he'll switch her off a good variety, on the other hand, has never use dismount. assistant, in fact, he's never even heard of siri. or alexa rudolfo knows about them, but never uses them. he's too worried about security and privacy, and he says there not much use around the house or for other activities. anyway. i rights when i had nothing else to do, i might ask siri to start an app on my smartphone. sometimes all ask for the weather full cost. leander is not a fan, he says flying cause justice in latin america and voice use interface will never function. property facts, leo comments with in days of your keeping animals

usually serve to practical purpose to perform work on farms. oh, god, homes. nowadays pets are valued primarily for their companionship. animals can have a calming effect and ease loneliness. can they also help people deal with traumatic experiences? oh, how helpful is animal assisted therapy, moon donkey therapy in pot and vote him back in southeastern germany. 2 years ago, elementary school teacher, christiana adam, had a deeply traumatic experience. a student attacked one of her colleagues with a knife. they have not a thought is the, the 1st thing i saw was blood. at 1st i thought she'd collapsed. i ran around the corner thinking the children in my class must be lying dead in a pool of blood tilted. she suffered 3 episodes of acute hearing loss and also

developed tinnitis. adam was eventually diagnosed with post traumatic stress disorder class. had mentioned, i couldn't trust people any more. i was on the brink of feeling that i no longer wanted contact with anyone mentioned harden donkey therapy helped her regain her trust in people. but does it really work? studies show that spending time with animals has therapeutic benefits. therapist greiner vaught explains why petting them helps calm us down. i the weakest in spend a sea of stroking animals like donkeys releases, oxytocin, serotonin and opening in our brain was a teasing home that's a very positive home on cocktail display. as a result, the parts of the brain responsible for stress and the perception of external stimuli, the ones that make his active wine down mom would look at pagan. today's therapy session involves

a gentle scroll through the countryside. but then the therapist confronts the patient and the donkey with a difficult challenge as a booker is for, is a bridge, is very daunting for a donkey. it's, it's, it's very narrow and there's a noisy stream bellagio, and it wouldn't cross it voluntarily. so if you're going to lead it across, you need to be very determined. lam, taco the donkey, knows the bridge well and crosses it without hesitation. but it's a new experience for christiana adam's donkey leo. will he rise to the challenge? he passes the test with flying colors. yeah. his entity, we're a team, that's the 1st thing i thought. well yon leo would you mind some people believe that animals are much like therapists, but i know volkhart puts it slightly differently. and tick an animal can never be a therapist. it's an assistant, a co therapist,

but never an actual therapist or the therapist guides the whole process. and obviously an animal can't do that. what says and this couldn't in, in this addiction treatment center and feel by in western central germany therapy. animals help patients adjust to a life without drugs and off the streets. alexander shania has been here for 3 months. he has managed to stay clean so far and is proud of his achievement. cancel, cancel. i'd really hit rock bottom laughing as i collected bottles to get a bit of money. and i did that so that i could buy alcohol, my drink every day. i started drinking the minute i woke up, sometimes at 2 or 3 in the morning. i were not. so i never felt any withdrawal symptoms does come in to come in. i drank 2 to 3 bottles of vodka a day to see

a flashing, but 2 or 3 bottles of wine, high flushing every day. just take it was a low point in his life. first guy, not 3 times, i nearly died. so i overdosed on heroin. twice in love, i used to be addicted. i o. d twice in the last time i was in a coma for 11 days. ah, wash if tug in coma, therapist, linda klein. and nelly have helped him recover machine guns talking well, if you're intoxicated all day, you don't have a sense of your body, you're just strung out with most patients. i noticed that this treatment comes them down a life in. we got the addon, but is animal assisted therapy backed up by research. you are him yosh and his team said the statistics speak for themselves. but we come guns, club league,

but it, but we can definitely prove that patients who work with animals for a period of 10 weeks or 30.8 percent more likely to complete their treatment than those who doubt them as the untidy of them. he does his katana. so spending time with animals means the treatment is more likely to be successful. even so animal assisted therapy has its critics. the continued main criticism is that neither the animals nor the therapists have properly trained. in many training programs, the focus is very much on the animals and not on the teen. him to the german animal welfare federation says that wild animal assisted therapy poses a threat to animal welfare. one example as dolphin therapy that takes place in cram pools agenda using wild animals and animal assisted interventions is very problematic, especially keeping dolphins cooped up since they swim such long distances in the

wild bend of the problem with animal assisted therapy training is that there's a wide range of providers, but they are no uniform training and quality standards. in germany, there are some 300 training centers for animal assisted therapy. oh isn't good song i'd say is the animal intervention therapy provide as i know of 20 to 30 percent are actually qualified and 70 to 80 percent aren't really. what if it's in critics say it's important that training in animal assisted therapy programs improves for the benefit of both the patients and the animals. but christiana adam and alexander. sh vanya say they wouldn't have got better without it. maxine would, as i just know, it does me good. i'm thinking about working with animals on a farm or an animal sanctuary one day he and one of them you dolphins not in wolf. ah,

that's all for this weeks to morrow to day. thanks for watching to join us again next week. and until then stay curious, but by with ah, with

who now they conquered the earth, millions of years before our time. since then they've been leading a secret life and have incredible abilities. if you think about it, it's impossible for humans to survive with will roots the world ah, 75 minutes, d w. it was 2016 as like

a bird to the queen. customer wants to see if germany was for me. the last few years have been quite a bright and early in touch with the evidence. i've already done the homework when it comes to jim a bit on of course i would look right in the eyes for a kid, but perhaps the biggest on the new hobby of mine, i'm no longer approved. i want to be interviewed. they're a person there because when you're feeling altogether, you'll realize that culture is the way of living. are you ready to meet the driver and then join me, right? let's do it on b, w. ah, let us see when i arrived here i slept with people in a room. 9th in it was harsh. fair. i even got white hair is learning the language head. yeah. a lot this kids to me and they don't. but to nicky, to in track to say you want to know their story migrant verifying and reliable information for migrant closely

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this is the w news live from alyssa in manuel. my cold winds a 2nd time as french president, the incumbent admits his victory was held by voters trying to block his wife melinda pent, lose this, but secures the highest vote for a fall. right. canada also coming up as russia invasion enters its 3rd month pop, united states officials visit key to announce more funding for weapons. russia is failing ukraine to succeed.