ah, discover the world around you. subscribe to the w documentary on you to suck into our science program. welcome to to morrow today. hello v comes to play, took on sure nothing at our bud marin. l. m. be comfy, measure let island. will it all out. those, if you have any those obvious your 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 with me for chinese. here we go and innovative prescribe. can you tell from mirrors voice when a joke. ok,

sorry we extort you. i'll go get us your saw. you saw the door movie up us. you know what i mean? and from one's, i guess i'd say i'm enthusiastic. i back myself has been quite diligent. i think i'm also quite light hearted to does purpose voice reveal those traits. watch our voices, so about our characters that and mo, coming up. i welcome to to morrow 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 reset 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? why is this woman introverted? what about him? be on schuler 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 which is needed 3 words to analyze personality profiles and emotions. second, oh, eager to test that claim. we asked catalina, dog and robin to speak into the computer for us. i left me. i found the computer using those brief sound holes to analyze what it called the big 5 personality traits. as i made from the 1st tray, is openness that applies to experiences and experimenting with new things and then there's conscientiousness, which is self explanatory. then 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 on, on the, on the final traitors. neuroticism which relates to whether person is calm or more emotionally unstable. dell is likely 1st among the office mom i took shined. dec seems to be exceptionally interested in experimenting. he's very open to new experiences. noise 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

shula. yes. in fact, he says he can even diagnose illnesses via the voice recordings is to mrs. and 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 speakers, the process of speaking involves practically the entire body. we use our lungs are our 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. for breathing and exhaling, we also use muscles in our chest and stomach area, including the diaphragm in total, more than $100.00 muscles are 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 ayana parkinson's is a neuro degenerative disorder that affects motor skills. could say latorsha, ungloved. on among the early symptoms, there's an impact on the small muscles that we use to produce our voice. 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 some of them

back to our personality test with doug, besides openness, which are the traits has the voice analysis system attributed to him. to get 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. lauded him is mr. 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've been the him want 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 than course fighting, even though we're not about to see me. so let's see what the computer reckons over there. shake the cutter inmates 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 pull for a hiking tool. 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, since i'm one of the couple under one or via phone in front of the pile, applewood van finance with hobbins, we are done. we take a look at robin's 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 as significantly more conscientious and open and agreeable and odd stella and soon 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 new 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 at 300000 kilometers per 2nd. light waves don't need a medium to carry them. ah, like drops of water, they spread out in all directions. this also applies to sound waves. 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 in the air, it travels 340 meters per 2nd. in water 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 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 signs and on twitter. welcome to hotel guy. what time is brit with visitors checking into this hotel have to into act 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 threaten to supplant out 4 legged friends with alexis switched the light on his dawn. did you sleep well? a google this could you make me a coffee to recovery? i'm on it. tell me more. 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 seem down. how about a joke to cheer you up?

right now it still the stuff of hollywood that we could just talk with our virtual assistant and have them fulfill our every wish. but perhaps one day our very companions might be replaced by virtual assistant, like alexa. alexa, thanks for the nasal spray. you always know what i need, right when i need it. no problem. tell me. 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 assistance of influence, our emotions, them. the hardest part assist. today's virtual assistants are very good at

answering questions on a relatively narrow range of topics of 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 clone? dinged the fastest route is 53 minutes via the a 3 and the b 55 a. i'm in a fairly normal exchange, but we're a long way off from communicating with machines of fish processed him. and what these devices still don't do particularly well is engage in any kind of small talk and talked to juan. wished i had the machines, communication capabilities are still very limited to phone call, so forth. what to do yesterday guess. yesterday i had pizza. how about you on 2

night? 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 a statement. 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 with a child, any assistance can elicit social reactions in as pretty easily and guns. an important element that we've seen in many studies is language and it awakens things inside of us. but like our natural communication skills and desire for social interaction found online. sorry. what do you like doing most desks? the same thing if you talking to someone on the other side of the screen. mostly. have you ever been in love, marie? no, never. 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 responds to my 1st name yet. in 2018 amazon got a patent for technology designed to recognize a person's physical and emotional state via 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 hell. alexa, alexa, what's the times it $612.00 p. m? can i order you something to make you feel better? a funny movie st. john's, what tablets z theory has you like me? i at 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 assistants provide katasha and beautiful baton. 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 uses 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. da guy says he does because alexa

understands his taste in music and even knows that if she recommends put 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. rodolfo knows about him, but never uses them. he's too worried about security and privacy, and he says they're not much use around the house or for other activities. anyway. i writes, when i've 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. that's leo cummins we 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 they 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 and 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 any one 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 kind of warfare explains why petting them helps commas down. i the weakest in spend a sea of stroking animals like donkeys releases, oxytocin, serotonin, and opening in our brain wasn't even 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 noise stream below 220 miles. it wouldn't cross it voluntarily. so if you're going to lead it across, you need to be very determined lamp pocket. the donkey knows the bridge well and crosses it without hesitation, but it's a new experience for christiana adams. donkey leo, will he rise to the challenge? he passes the test with flying colors. yeah, he is in team. we're a team. that's the 1st thing i thought. well yon leo, my some people believe that animals are much like therapists, but fine of all of our puts it slightly differently. and t coming 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 do that. what says and his current 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 cancelled canceled. 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 like my drank every day . i started drinking the minute i woke up, sometimes at 2 or 3 in the morning that i were not. so i never felt any withdrawal symptoms does come in to come eat. i drank 2 to 3 bottles of vodka a day to see

a flashing, but 2 or 3 bottles of wine. hi flushable. every day does take place it was a low point in his life fest. not 3 times. i nearly died. sly overdosed on heroin, twice in love, i used to be addicted. i o. d twice and 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. munition guns, italian? well, if you're intoxicated all day, you don't have a sense of your body, they're just drawn out with most patients. i notice that this treatment comes them down a life him. 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 can guns club league by that. 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 m d dot disk autonomy. so spending time with animals means the treatment is more likely to be successful even so animal assisted therapy has its critics then continues. 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 team of them 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, and then some good young 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 in it, but there are no uniform training and quality standards. in germany, there are some 300 training centers for animal assisted therapy. oh, isn't good. sorry. i say 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 critic 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 shania say they wouldn't have got better without it next, nor did i just know it. does me good? i'm thinking about working with animals on a farm or an animal sanctuary. one day he a month and open keel office, not in wolfstein.

that's all for this week's tomorrow today. thanks for watching. to join us again next week. and until then, stay curious, bye bye. ah, [000:00:00;00]

with and a clear message called music as a means of transmission. oh, great to the song mm. aren't 21.

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