hello. this is bbc news — the headlines: more than 250 people have been killed, many more are missing, after mudslides in colombia. the president has declared a state of emergency in the region. six people have been arrested after what's been called a brutal attack on a 17 year—old kurdish iranian boy in south london. police are treating the incident as a hate crime. theresa may reassures gibraltar of britain's "steadfast" commitment and says she will work to secure the "best possible outcome" from brexit talks. the university boat race will go ahead as planned, after a suspected world war ii bomb was removed from the banks of the thames. now on bbc news, it's time for click. this week: adventures in sound with posh cams, invisible speakers and cloning brian eno‘s brain. invisible speakers and

cloning brian brain. today i'm in the lair of the wizard who likes decibels, who likes to write a book or two, a wizard called brian eno. don't know if i should show you how this works. let's just find the... these are just not bits of speakers, they are working speakers? yes. on my gosh. and it is sound that this

man is best known for. big sound. the former member of roxy music has added production sounds to the biggest acts in the world — u2, coldplay and some chap called bowie. he is a self—proclaimed non—musician who uses technology to make his art. there it is. so this essentially never repeats in billions of years. it is constantly generating new images. i mean, sometimes it does things that are so baffling and fantastic you think, i never would have thought of that. it is love of random, generative art that has brought us here. his music is very atmospheric and at the wheel and he's regarded

as the godfather of ambient music and his new work, reflection, it is rather unpredictable. it is a generative music app which follows rules defined and we find by brian eno but which plays differently every time. 14% of these notes, random, will be pitched down by three semitones. the second is al% go an octave down, 12 semitones. can ijust said... scientist. i would go further, quantum scientist. probabilities. brian eno has spent weeks, months, tweaking these rules and probabilities which when combined cause these sounds to bounce, transform or not play at all. these are different types of scripters.

i like them. who doesn't! actually, these rules can be applied to any type of music. something more pacey, their effects become immediately obvious. we will make that a tedious loop. a lot of music is based just on things like that and it goes on for ever. now i will put in some scripters. first a way of reducing the number of beats. it is only playing 80%. already it is a pretty crappy drummer. actually, this is way

more interesting than the original drumbeat. we'll introduce some rolls. traditional music, you have a piece which locks down but you are not locking it down. you are taking these and locking that down, the process. i don't mind so much if the piece changes every time. it is a good way of explaining it. i am trying to make a version of me in the software, my taste, if you like. i'm interested in the edge of my taste envelope, and randomness is a way to find out. mixing things up is something brian is known for. the legendary oblique strategy cards, by imposing a rule,

you reduce the possibility to solve it. discover the recipes you are using, and abandon them. if you are working with other people, you get information and derailment. if you are working alone you can easily get into a rut. work at a different speed. that is a useful one. that could mean a lot of different things. it could change the speed or do things at different speed. work very, very quickly or very, very slowly. take a minute to get to that guitar. pick it up. put it on. plug it in. have you thought of whether you can copyright the music that comes out? that is a good point. if you sell the app,

do they own the music? because they have constructed it. all the bits are mine and peter's. and what did you conclude? it is not easy to make a case for saying it is my music because it sort of is in a modern sense of what composing means. we spent about an hour with eno, and in the next few days you can see more inside brian's brain on online. lookout for the link on twitter from click. welcome to the week in tech, elon musk started yet another company. the company which aims to implant ai technology onto the human brain. does this guy never watch sci—fi films? it rarely ends well. amazon head honcho showed

the interior space tourists will see in his origin spacecraft. jeff bezos is now the second richest man in the world with a net worth of $75 billion. $10 billion behind bill gates, though. and how about turning any surface into an interface without the need for a screen? a host of devices that like speakers lights and thermostats can beat all the remote controls. in france, a host of teams will outline vehicles built in france, a host of teams will race vehicles built with less than a number of parts. they may someday drive around the human body performing medical procedures. but now, teams will raise them at speeds of up to five nanometres per hour.

that means it will take these machines to 37 million years to travel a single mile. not exactly formula one. this week, samsung launched its latest mobile phone. just a few minutes to go until the launch start, and there is an incredible level of secrecy here, but there is a lot at stake for samsung. after the note 7 debacle, we're waiting to see why we're waiting to see what the s8 has in store. cold hype turned to fuss. well, two phones were born. s8 and s8 plus. not even the plus is that large,

because of the screens on both of them curve over the edges. a lot of hype about these. it does not feel like a big deal personally, but it means you get a screen which is bigger on a smaller size. so, a few of the features we have been told about today. a fingerprint scanner. iris and facial recognition, meaning you should not need a password but still achieve all the security you want. an invisible home button. as you press it, you can feel some sensation. one thing we have heard a lot of talk about is the launch of bixby. when fully functioning, the system aims to make interacting easier. interacting with apps, controlling other devices and using artificial intelligence to land your habits and suggests what you might be looking for next.

naturally, i want to test this new personal assistant, but there is a substantial problem. bixby is currently only available in korean. it will be released in american english in may. after that, other languages will follow. it may well be great, but i can't tell you about it. in the meantime, the image recognition function is in action. you photograph an item, and it aims to find it for you online, with varying success. so, the hairbrush shot. it thinks my hairbrush is a fork. i have been asking around to see what others think about it. very impressive screen. 18.5 by 9. i think that will be a huge trend in phones this year. that is a big screen in a very small phone. 5.8 inches, and i can fit my hands around it. the experience has not changed a lot.

we have not got the dual camera. bixby only uses standard samsung apps. i do not think everybody wants to speak to standard apps. they want to speak to all their apps. for the amount of time they made us wait, these perhaps under—delivered on standout features we have not seen elsewhere. the phone will be released this month from $650. the company believe they will see explosive sales, but let's hope not exploding phones! now to cyborgs, and when hollywood imagines them they look way too futuristic to be anywhere close to becoming reality. they did not save your life, they stole it. but are they?

dan simmons has a special appointment with a professor at the university of tokyo injapan. i have come to see a professor who is apparently going to turn me into some sort cyborg. it is one of the first times a camera crew has been allowed in to see the process happen and it will take place through this door here. this research team have come up with the world's thinnest organic circuits, lighter than a feather, they could be worn like a second skin. either monitoring the body or as an e—skin display.

we can introduce the electronic functions on the surface of the skin without causing any discomfort from wearing. this is human and machine coming together. the display they are putting on to me has taken three days to manufacture so the research team are being very careful. its thickness is just two to three microns. the magic is controlled by polymer semiconductors and transparent electrodes with organic semiconductors and diodes firing up the display. and they are surprisingly resilient. they can scrunch them and on rubber even stretch them. it still works and that is something i have come to put to the test. the professor has used his e—skin to measure heart rate and oxygen levels in the blood.

could we use these out and about, is it robust enough to go running with it? please move your hand. something like that. i see. it doesn't cause any mechanicalfailure. it is flexible. would you expect us to change this every two or three days? yes, that's another possibility. if we can manufacture everything very cheap, so after you go to the shower and then delaminate your skin and put on the fresh one. i expected that to break by now. and it's still very much alive. this is just a single digit display today, but what could this be in the future? the second step will be much more digits and then going

to the high—definition display. so we could have maybe 1,000 pixels? yes, that's technologically possible. on our hand, so we could, what, talk to people on our hand? yes. this could be a picture of my mum, for example? she would appear on my hand? yes, that would be possible in the future, maybe four to five years. but lifetime will be the biggest issues. this is the start of the rise of the cyborgs. that was dan, wearing some pretty advanced technology on his person. i've got my own piece of advanced technology here. these are the sennheiser hei

headphones and would you like to take a guess at what is special about them? for a start, they cost £54,000! fire up one direction. no one direction? classical music plays. 0k. so, i'm not a real audio expert. i used to work on the radio so i do know about sound. but i'm also 43, so i think i'm slightly deaf. but these certainly sound very expensive. very, very nice. what's interesting is that they're not noise cancelling and they're not sound isolating. i can actually hear other stuff in the room. and i'm not sure whether i would expect that or whether i would expect to be shut off from the room when i put this on so you can just hear music. wow!

for people who are in love, or should i say obsessed with sound quality, it seems that nothing is off—limits. but when those people are injapan, off—limits hits a whole new level. we are used to seeing unusual things in japan, so we were not surprised at all to hear about a group of people who would think nothing of spending a whole lot more than the price of these in search of audio perfection. music: "the four seasons" by vivaldi. it seems some people don't care what their place looks like, as long as it sounds amazing. but if you are into your high—end audio but you also want something a bit more inconspicuous, then we've come here to london's smart apartment to see some options. these speakers are made by linn and will cost £12,500 for the pair. they come with a choice of fabrics.

you can choose whichever one blends into your decor best. the fabric, apparently, has been specially developed so it doesn't dull the sound. but metre—tall speakers are always going to be quite attention grabbing. what if you want your speakers to be heard but not seen at all? so, can you spot the speakers in this room? well... they are actually up there. there are lots of little speakers in the ceiling next to the light fittings. they were installed before plastering, so that they can sit flush with the ceiling. this is what they actually look like and because there's quite a few of them they don't have to be that loud to fill the room with sound. if that's still too

conspicuous for you, this room has invisible speakers in that they are in the walls. you can feel them by the vibration here and here. you can't see them at all, of course. these ones have been wallpapered directly over. if you are plastering the wall you can get away with two millimetres of plaster only, apparently. and if you are worried about your speakers going wrong, the manufacturers have told us that within 15 years they will come and not only repair the speakers but also make good your decorations. and that's it from the smart apartment. follow us on twitter if you would be so kind. we have plenty more of this kind of stuff every week and there's more coming from brian eno soon. thanks for watching and see you soon. it was a decent second part to the

weekend with plenty of sunshine. it tra nslates weekend with plenty of sunshine. it translates into clearer skies overnight and it will turn chilly. has been thicker cloud over eastern parts of england, the odd spots of rain in unlucky places but many have had a lovely day with plenty of sunshine. the cloud we see in the east will melt away. the breeze will pick up in the north—west and cloud arriving with patchy rain in the western isles by the end of the night. chilly again overnight, five 01’ night. chilly again overnight, five or6 night. chilly again overnight, five or 6 degrees typical in major towns and cities. a touch of frost for some, but not major by any means. any mist and fog should not last too

long but there will be some patches of that. there will be some low cloud lingering for eastern part of england. but generally speaking a lot of fine, dry weather and the wind is light as well. reasonable start to what should be a good day for most of england and wales. more breeze and cloud on the western isles and the western side of scotland. i think for most of england and wales it is a decent day. the mist and fog will disappear and then it is light winds for the most part. further north and west, cloud and patchy rain moving its way from west to east, getting into western scotland and fringing in the eastern wales. could go as high as 17 in london. cloud and rain makes progress overnight monday into tuesday. dribs and drabs of rain left in the south—eastern corner. but that should help keep temperatures up a bit. tuesday, we

start with patchy rain in the south eastern corner. that moves towards the near continent and them behind it it is bright and breezy. maybe a shower or two in the far north and west. tuesday night into wednesday, this area of high pressure becomes established across the uk and that will settle things down nicely. for the week ahead, very little rain, fine and settled with high pressure and highs will typically be around 12 to 14. this is bbc news. the headlines at four: a state of emergency has been declared in colombia after more than 250 people are killed in mudslides; many more are missing. police in croydon are treating a brutal attack on a 17—year—old kurdish—iranian boy as a hate crime. six people have been arrested. this was a cowardly and despicable

attack. a teenager whose mother and brother were stabbed to death at home says the family is "devastated" — lydia wilkinson left flowers at the scene earlier. theresa may reassures gibraltar of britain's steadfast commitment and says she will work to secure the best possible outcome from brexit talks. also in the next hour, today's boat race will go ahead. a suspected world war two bomb has now been removed from the banks of the thames, meaning the university boat race