:00:13. > :00:18.Hello welcome to Bang and Monday morning rush hour at St Pancras
:00:18. > :00:23.International in Central London and it is noisy. It's a bit noisy. Love
:00:23. > :00:27.St Pancras, but it's noupbs, station announcements, trains
:00:27. > :00:31.coming in. From the moment you're wrenched from your sleep by a
:00:31. > :00:35.beeping alarm clock, it's a barrage of noise. There's radio, traffic,
:00:35. > :00:39.police sirens, dodgy ringtones. Until eventually you fall asleep to
:00:39. > :00:44.the gentle lull of traffic on the street and people having a Barney
:00:45. > :00:50.outside your binnedo. So this week, we are asking the question: Is
:00:50. > :00:54.modern life too loud? Tonight, Jem takes us beyond human hearing to
:00:54. > :00:59.listen in on the quietest of the quiet.
:00:59. > :01:07.You can actually hear it eating! Liz looks into the way that sounds
:01:07. > :01:11.can affect your mood. I'm going to be showing how a single sound can
:01:11. > :01:15.give away your age. If this has gone according to plan, we should
:01:15. > :01:19.have the older person at this end, down to the youngest at this end.
:01:19. > :01:23.First do we need to worry about all the background noise that we're
:01:23. > :01:29.constantly bombarded with? I've been on a mission to find out with
:01:29. > :01:35.my new favourite gadget, the sound metre. Let's have a listen to St
:01:35. > :01:42.Pancras station. Can you see that, it is about 81 decibels something
:01:42. > :01:48.like that. What exactly does that mean? My life seems to be filled
:01:48. > :01:58.with noises as bad as that train. Let's see what the background noise
:01:58. > :02:00.
:02:00. > :02:04.level is. Round about 71, going up to 80 there. It's pretty loud. It's
:02:04. > :02:10.quiet confusing the scale, double the number of decibels doesn't mean
:02:10. > :02:18.double the volume. For example 80 decibels isn't twice as loud as 40.
:02:18. > :02:27.90 is actually twice as loud as 80. The nice peaceful canal, what's
:02:27. > :02:31.that? About 55. My rather loud high advise jacket may be affecting it -
:02:31. > :02:35.- high Vis jacket may be affecting it. I've noticed as I've got older
:02:35. > :02:39.my hearing has changed. Is that normal. Is there anything I need to
:02:39. > :02:45.worry about? This is a good place to startment Can we have a look at
:02:45. > :02:50.the ear. Last time I looked at the model of an ear was many years ago
:02:50. > :02:55.in O-level biology. You have three main parts, the outer ear. Then the
:02:55. > :02:59.ear drum, this bit here. Separates the outer ear from the inner ear.
:02:59. > :03:05.So the vibrations against transmitted through the bones. It
:03:05. > :03:10.starts a chain of events which carries the sound through to the
:03:10. > :03:16.stapes. Once the stirrup starts to move, behind the oval window is
:03:16. > :03:21.fluid. The fluid goes all the way up to the cochlear. So simple and
:03:21. > :03:26.yet complicated. It's a big chain of events. Hearing, I think, maybe
:03:26. > :03:30.I'm a bit biased... You can be biased. Is probably one of the most
:03:30. > :03:35.complex of our senses. There's this mechanical bit going on and before
:03:35. > :03:40.it becomes electrical impulses to the brain, so it's a complex system.
:03:40. > :03:45.We live in a noisy world. I've had my decibel reading for a few days.
:03:45. > :03:52.Normal traffic in London is between 80 and 90 decibels. Road works with
:03:52. > :03:57.a guy with a big hammer, 100. Police sirens and ambulance sirens,
:03:57. > :04:02.110 decibels. It is all very loud. But the impact that it actually has
:04:02. > :04:07.on us will depend on how long you're hearing that loud 110
:04:07. > :04:16.decibel siren for. I've noticed as I've got older, occasionally I get
:04:16. > :04:20.really loud buzzing in my ears. I suffer from a mild tinnitus,
:04:20. > :04:24.there's a mildly permanent ringing. I'm wondering how that happens. To
:04:24. > :04:28.find out whether my world of noise has affected my hearing, first we
:04:28. > :04:32.needed to check for signs of physical damage. Shall we look in
:04:32. > :04:37.your ear. I apologise if they're not that clean. We'll have a look.
:04:37. > :04:43.You're going to be able to see on the television screen. Oh, no!
:04:43. > :04:50.there is wax, you're going to see it. Of course, I was right to be
:04:51. > :04:56.apologetic. The full horror of my ear canal was about to be revealed.
:04:56. > :05:02.It's horrible. I don't want to look. You have very small ear canals. Do
:05:02. > :05:07.you see like a blob of something there, that Brownie bit. That's wax.
:05:07. > :05:12.It's really an unpleasant view. I apologise if you're having supper.
:05:12. > :05:16.My ear canal was so cloged we could hardly see the ear drum. Can you
:05:16. > :05:22.see something that's pearly grey like a window almost. Yes. That's
:05:22. > :05:25.your ear drum. Wow. The amount of wax you have in your ear is
:05:25. > :05:30.perfectly normal. Wax is there to protect the ear canal. I couldn't
:05:30. > :05:36.really see, it was like the lost world in there! To me that looks
:05:36. > :05:44.hideous. Not at all. How are your ears? My ears are pretty clear.
:05:44. > :05:49.I look in your ear.? Why not. way of comparison. Pull back of my
:05:49. > :05:55.ear to straighten the canal. Look at that. Oh, see now you haven't
:05:55. > :06:02.got any wax and I can see your ear drum perfectly. That's amazing.
:06:02. > :06:08.Your ears are officially a lot nicer than mine. My ear drum looked
:06:08. > :06:12.OK, but how well was everything else working? To find out, I was
:06:12. > :06:15.played a series of tones at different frequencies and volumes.
:06:16. > :06:20.All I had to do was press a button if I could hear them and then wait
:06:20. > :06:24.for the results. Break it to me. Give me the bad news, give me the
:06:24. > :06:30.good news. Good news actually. So here's your hearing, what we're
:06:30. > :06:33.plotting is the softest, you're able to hear, you sort of averaged
:06:33. > :06:38.at about five to ten decibels, which is actually pretty good for
:06:38. > :06:42.someone your age. We looked at the snail shell which had the hair
:06:42. > :06:49.cells in it. If you can imagine the hair cells as almost a field of
:06:49. > :06:52.wheat OK. Over time, noise exposure can cause the cells to swell. After
:06:52. > :06:56.prolonged swelling, sometimes they can even rupture and then those
:06:56. > :07:00.cells die. Imagine them sort of falling over like somebody had
:07:00. > :07:05.driven over a field of wheat. Once you've actually damaged them, they
:07:05. > :07:08.can't regrow or repair. You would expect that the high frequencies
:07:08. > :07:13.start to deteriorate first. At this point in time, I wouldn't expect
:07:13. > :07:17.you to have any concerns. Your hearing looks to be well within
:07:17. > :07:21.normal limits. As I've got older there's natural hearing loss, but
:07:21. > :07:26.it's like tough, live with it really, this is not unusual. That's
:07:26. > :07:30.correct. We listen to a lot of music through head phones. How
:07:30. > :07:35.careful do people have to be? Are they setting themselves up for a
:07:35. > :07:38.fall later in life? It is a concern. People tend to be in a noisy
:07:39. > :07:41.environment in London so we crank up the volume. When you turn it up,
:07:41. > :07:49.what you're doing is making yourself a bit more vulnerable
:07:49. > :07:53.because the sound pressure level, is a lot higher in the ear canal.
:07:53. > :07:56.One of my biggest bug bears on the train trying to relax, somebody
:07:56. > :08:02.else's head phones, you can hear the lyrics and everything. It must
:08:02. > :08:06.be really loud. I bet if we tested anybody walking through here it
:08:06. > :08:11.would be too loud. As luck would have it, two people behind us are
:08:11. > :08:15.listening to music. Can I borrow this. I'm delightly in love with my
:08:15. > :08:19.gadget. Put the ear phone over the end and have a listen. Excuse me,
:08:19. > :08:25.we are doing a scientific test to see how loud people's music is in
:08:25. > :08:35.their head phones. Would you mind if I tested yours? Yours first.
:08:35. > :08:40.Thank you very much. 85, not too bad though. What about you? 80 to
:08:40. > :08:46.83. Thank you very much. We hit 85 with the gentleman and 83 with the
:08:46. > :08:52.young lady. Do you remember when that train went by up there that
:08:52. > :08:58.was about 83, 84, it sounds like a the turbo charger on a train.
:08:58. > :09:02.your point, yeah. For a generation today, overexposure to loud head
:09:02. > :09:05.phones hasn't been an issue, but that doesn't escape the fact that
:09:06. > :09:12.as you get older high pitched sounds get harder to hear. Look at
:09:12. > :09:14.this: Trying to get people to do things at a station is always
:09:14. > :09:19.difficult. They're trying to get somewhere. We're going to round up
:09:19. > :09:23.a few people. We want to see how good people's hearing is. Welcome
:09:23. > :09:28.to London. It's all about hearing. Nice to meet you. Welcome to Bang
:09:28. > :09:32.Goes The Theory. Do we have enough people? I've got a random group
:09:32. > :09:35.assembled. They stand in a line and raise their hands. I'm going to
:09:35. > :09:39.play them a sound which will increase in pitch. When it's too
:09:39. > :09:45.high for them to hear, I want them to drop their hands. You can do
:09:45. > :09:55.this at home too. We will play the note now, here we go.
:09:55. > :09:55.
:09:55. > :10:00.After a while it's too high for some people to hear. That's number
:10:00. > :10:10.one, number two. If you're listening at home, it is still
:10:10. > :10:12.
:10:12. > :10:16.going, can you still hear it? You won. What I would like you to do is
:10:16. > :10:25.write your age on the back of your piece of paper. Can you rearrange
:10:25. > :10:28.yourself in numerical order? Don't reveal your age. Perfect. This is
:10:28. > :10:32.the order in which you put your hands down. Now if this has gone
:10:32. > :10:37.according to plan we should have the oldest person at this end going
:10:37. > :10:47.down to the youngest at that end. If you could now turn over your
:10:47. > :10:50.
:10:50. > :10:56.sign. 71. 68. 59. 45. 42. This is interesting, 16, 20, nearly. 19, 18,
:10:56. > :11:00.19, and eight. It kind of worked. We have the oldest person at this
:11:00. > :11:05.end, all the way down to the youngest person at this end.
:11:05. > :11:08.Between the 18, 19, 20s, there's a bit of difference. But there's
:11:08. > :11:13.obviously other things to do with that as well, how loud you have
:11:13. > :11:16.listened to muse nick the past. Genetics will affect it as well.
:11:16. > :11:20.It's an interesting correlation between age and how our hearing
:11:20. > :11:24.changes especially the upper frequencies. Thank you very much.
:11:25. > :11:29.Has been missed their train? I'm sorry. It's not just your hearing
:11:29. > :11:33.that can be damaged. Pedestrians getting hit by cars because they
:11:33. > :11:37.don't hear traffic coming with the head phones on. In America it's
:11:37. > :11:41.trebled in six years those incidents. The other thing that
:11:41. > :11:45.really interests me is that our ears are the most astonishingly
:11:45. > :11:49.sensitive organs and I kind of get to wondering, if we were to get rid
:11:49. > :11:59.of all this background din, what are the tiniest, most delightful
:11:59. > :12:01.
:12:01. > :12:07.noises we could hear? This is an anechoic chamber. It's a room,
:12:07. > :12:11.suspended within a room suspended in another room. Not only is this
:12:11. > :12:16.room absolutely insulated from any noise from the outside world, it's
:12:16. > :12:21.also made with wall that's produce no echo whatsoever. This is
:12:21. > :12:25.actually a research facility at the University of Salford. We want to
:12:25. > :12:30.do some research of our in -- own in here. We can answer questions
:12:30. > :12:37.that you couldn't answer anywhere else like how loud is a shrithering
:12:37. > :12:41.snail? Or maybe, what is the footfall of a centipede. These are
:12:41. > :12:46.sounds that may never have been heard by the human ear. I needed
:12:46. > :12:52.some help. When it comes to extreme recording in the natural world,
:12:52. > :12:55.Chris Watson has near legendary status. Do you think a chamber like
:12:55. > :13:00.this would be the best chance we've got of hearing them? Absolutely. It
:13:00. > :13:07.doesn't get any better than this. The natural world is not as quiet
:13:07. > :13:10.as this. What kind of kit do you use to capture the sound of the
:13:10. > :13:14.practically inaudible? There's two techniques. The simplest one I use,
:13:14. > :13:18.most of the time in the natural world is simply to get the
:13:18. > :13:23.microphone as close as I can to the source of the sound, because what
:13:23. > :13:28.we want to do generally is get the very best signal, which is the
:13:28. > :13:31.sound the animal's making to ambient noise ratio.
:13:31. > :13:38.Even in these perfect conditions, standard microphones won't be
:13:38. > :13:42.enough. The other piece, instrument I've brought is not something that
:13:42. > :13:47.works with changing air pressure. It work was vibration. This is a
:13:47. > :13:52.contact microphone. What we can do in this case is actual lay tach the
:13:52. > :13:56.contact microphone to the surface on which your animals are going to
:13:56. > :14:01.be placed. With both microphones rigged, Chris chose what he hoped
:14:02. > :14:06.would be the simplest challenge. Let's try the maggot.
:14:06. > :14:16.Imagine how it is for the animals inside.
:14:16. > :14:27.
:14:27. > :14:37.Just tip a few out. Stop breathing. That's working. Yeah. We'll do a
:14:37. > :14:39.
:14:39. > :14:43.bit more with this. That's so clear. That's astonishing. You think that
:14:43. > :14:49.they're completely silent. You think that a creature like that
:14:49. > :14:54.with no legs at all would be utterly silent. They sound lick a
:14:54. > :14:58.little crisp pact rustling their way around the world. Even more
:14:58. > :15:05.amazingly, it allowed us to hear the maggots without the use of
:15:05. > :15:14.microphones at all. It's like snap, crackle and pop.
:15:14. > :15:23.It's like a bowl of rice Chris piz. Oh, yeah, yeah. Next up the
:15:23. > :15:29.centipede. Here it comes. I might have to be quick with these
:15:29. > :15:39.subjects. What we're hearing now is via the contact mic. Fantastic.
:15:39. > :15:51.
:15:51. > :15:56.Amazingly, we have actually heard the footsteps of a centipede and
:15:57. > :16:03.they are tiny beyond belief. Now I don't feel so bad for never having
:16:03. > :16:07.heard it before, because even with all this equipment and the most
:16:07. > :16:10.precise recording environment available, it's still only just
:16:10. > :16:15.audible. They are the tiniest foot steps.
:16:15. > :16:19.Two down, now just one more animal to go, the snail.
:16:19. > :16:28.This one's moving, like this one is looking quite dynamic. So I'm going
:16:28. > :16:38.to move it in. He's on his lettuce. to move it in. He's on his lettuce.
:16:38. > :16:48.
:16:48. > :16:52.You can actually hear it eating. That is fantastic. That's the best
:16:52. > :17:02.thing I've ever heard. I still wanted to find out what a snail
:17:02. > :17:05.
:17:05. > :17:13.sounds like on the move. Well done, mate. But we soon found
:17:13. > :17:17.out there was nothing to hear at all. That's pretty quiet. Yeah.
:17:17. > :17:26.actually can't hear it, but that gliding movement appears to be
:17:26. > :17:30.silent, inaudible. So the headline news here - sliding snail in the
:17:30. > :17:35.quietest room in the world with the best sound equipment in the world
:17:35. > :17:40.is actually silent. I love the sound of the maggot wriggling
:17:40. > :17:44.around, very cute. I can imagine the crunch of a snail in your ear
:17:44. > :17:48.drum getting on some people's nerves. Did you find it grim?
:17:48. > :17:51.no, it was all right. It wasn't my favourite sound in the world.
:17:51. > :17:56.amazing how certain sounds can evoke a gut reaction. Others make
:17:56. > :18:00.you smile. Some sounds make you cry. Exactly, which is why I've put it
:18:00. > :18:03.to the test. I've gathered a collection of different sounds
:18:03. > :18:06.which I'm going to play to the commuters here and see how they
:18:06. > :18:11.react. Can we have a quick word with you,
:18:11. > :18:16.are you in a hurry. I have a bunch of different noises, some of them
:18:16. > :18:19.are nice sounds. Some of them are... Horrible. Your words. I'm
:18:19. > :18:29.interested in your kind of, with your face, I'm interested in seeing
:18:29. > :18:33.
:18:33. > :18:42.how you feel. OK. WATER NOISE SHEEP BLEETING
:18:42. > :18:52.BABY GURGLING GUNSHOT
:18:52. > :19:04.
:19:04. > :19:08.BURPING Excuse me vicar. SCREAMING Very scary. Farting Any particular
:19:08. > :19:13.ones that you really didn't like? The woman screaming. The woman
:19:13. > :19:18.screaming; I hated the screaming. It made me jump, the screaming.
:19:18. > :19:22.gunshot was the only one that stands out. The screaming.
:19:22. > :19:25.Interesting reactions going on there. But is this just a
:19:25. > :19:31.conditioned response, a reaction to the things we associate with a
:19:31. > :19:38.particular noise or do we actually have a deeper psychological or even
:19:38. > :19:42.psychological relationship with sound? I'm going to listen to those
:19:42. > :19:48.same sounds that Dallas has been played back, but to explore the
:19:48. > :19:52.depth of my emotional responses, Dr Harry Witchell set out to record my
:19:52. > :20:02.tiniest and most revealing facial expressions, which involved an
:20:02. > :20:29.
:20:29. > :20:33.That's hilarious. So I think we'll be able to have measured some of
:20:33. > :20:37.those responses clearly, particularly some of your disturbed
:20:37. > :20:41.responses. What can we tell from this. This graph is the brow height,
:20:41. > :20:45.this goes down when you are in difficulty, so that can be
:20:45. > :20:50.confusion or anger, fear etc. What's this first one there then?
:20:50. > :20:54.That very brief one is a burp. You That very brief one is a burp. You
:20:54. > :20:57.can see that the depth of it is not that deep. It doesn't last very
:20:58. > :21:02.long. By contrast the huge one is just lasts about three times as
:21:02. > :21:06.long as the others, is vomiting. Throughout the entire time you must
:21:06. > :21:13.have been thinking this is horrible. Of all the sounds that was the
:21:13. > :21:16.worst for me. Is this reaction to these sounds mostly emotional or is
:21:16. > :21:21.it evolutionary, bit of both? of both. Some of the surprise
:21:21. > :21:25.reactions that you're getting, that's going to have to do with
:21:25. > :21:28.shock, like to the gunshot. That's going to be something that's
:21:28. > :21:34.vaguely evolutionary. It's definitely hard wired into us from
:21:34. > :21:38.the start. What else can we see my reactions to the sounds? The other
:21:38. > :21:42.thing was mouth width, representative of a smile.
:21:42. > :21:46.interestingly my biggest smile was to the scream. Did you not take it
:21:46. > :21:50.seriously? No, I figure today was a comedy scream from a bad horror
:21:50. > :21:54.movie. Individual differences come into play as well, depending on
:21:54. > :21:58.what you associate things with. It can be a comedy movie instead.
:21:58. > :22:01.Exactly. So the difference between nature and nurture, what you've
:22:01. > :22:05.learned is fundamental to how people respond. Something as strong
:22:05. > :22:08.as the sound of vomiting for example, surely that can't be
:22:08. > :22:13.changed. I'm sure that most people associate it with something very
:22:13. > :22:18.unpleasant from their childhood. But I think you can learn
:22:18. > :22:25.deliberately to like almost any sound. You probably could even like
:22:25. > :22:28.to sound the vomit. I don't believe you for one second. It would be an
:22:28. > :22:33.aenquired taste. Raids I'm not convinced that you can learn to
:22:33. > :22:37.love that. For me, there's loads of unnatural noises, like drills,
:22:37. > :22:41.lathes whatever, they remind me of lathes whatever, they remind me of
:22:41. > :22:49.happy times in the work shop. true.. What is the most unpleasant
:22:49. > :22:54.sound? Dr Yan might have theance. The sound is just astonishing!
:22:54. > :22:59.All sorts of noises make people cringe. But there's one that a lot
:22:59. > :23:05.of people just find unbearable. Can you guess what it is and why it
:23:05. > :23:10.makes people's skin crawl so much? It's awful. If your ear drums are
:23:10. > :23:13.up for the challenge, find the answer at/bang. While you're there
:23:13. > :23:19.follow the links to the Open University for more information
:23:19. > :23:24.about noise, from combating pollution to laser enhanced hearing.
:23:24. > :23:29.Noise can be deeply disturbing, that's why so much effort has been
:23:29. > :23:33.put into reducing noise from planes, from trains and especially cars,
:23:33. > :23:38.but is that always such a good thing? The modern world has got a
:23:38. > :23:41.lot noisier, but really that's just because there's more planes, cars.
:23:41. > :23:47.The actual machines themselves, that make the noise, have got
:23:47. > :23:52.quieter. I think about my dad's old car when I was a kid, you used to
:23:52. > :24:02.have to shout to make yourself heard. The interior of a modern car
:24:02. > :24:04.
:24:04. > :24:09.Maybe car designers have just got too good at keeping the noise out.
:24:09. > :24:13.After all, the sound of your car is a very emotional experience. If you
:24:13. > :24:18.can't hear the engine or the accelerator or the sound of
:24:18. > :24:21.changing gears, then you're sort of disconnected from the entire
:24:21. > :24:25.driving experience. There's no audio feed back. So how does that
:24:25. > :24:30.affect your ability to drive? Here at the University of Warwick, I'm
:24:30. > :24:34.not quite in control of a very special driving simulator.
:24:34. > :24:39.Remarkably the aim here is to put the noise back into driving to find
:24:39. > :24:41.out how much noise we need to drive properly. The sound of the car is
:24:41. > :24:48.built up of all the different components of the vehicle making
:24:48. > :24:55.their own sounds. So this is the structure borne road noise. If I
:24:55. > :25:01.add in the wind noise. Then finally, we can turn on the engine. There we
:25:01. > :25:06.go, giving it a bit of gas and I can hear the engine now. It's all
:25:06. > :25:12.about getting that blend in the right balance. There's like a
:25:13. > :25:16.symphony. The whole driving simulator is needed to understand
:25:16. > :25:22.how sound affects my driving because the way I hear is affected
:25:22. > :25:27.by what I'm doing and what I can see at the time. The sound of the
:25:27. > :25:32.car reacts and changes with the way that you drive it and the way that
:25:32. > :25:37.you drive is influenced by the sound of the vehicle. As car sounds
:25:37. > :25:42.have changed over time, has that actually affected our driving? Have
:25:42. > :25:46.we become worse drivers or better drivers? It has been an influencing
:25:46. > :25:50.factor. If you remove a lot of the wind noise and the tyre noise,
:25:50. > :25:55.people drive it a lot faster than they would normally drive a vehicle.
:25:55. > :26:00.And sometimes that's not desirable. No, so it really does have a
:26:00. > :26:07.psychological effect on us? It does absolutely. There we go, that
:26:07. > :26:13.sounds much more like a kind of sporty engine. Instead of -- the
:26:13. > :26:17.sound of me hurtling towards my mid-life crisis. That's a sporty
:26:17. > :26:21.car, Ferrari that kind of thing. Let's go for a modern electric car.
:26:22. > :26:25.This is the sound of the future. Which to me sounds a little, it's
:26:25. > :26:28.so odd having no engine noise at all. I just feel you're
:26:28. > :26:35.disconnected from the whole experience. I prefer to have a bit
:26:35. > :26:39.of engine noise. I prefer to hear it and feel it. There is a case for
:26:39. > :26:43.manufactures adding artificial engine sound to make people feel
:26:43. > :26:50.comfortable with the vehicle that they're driving. Drivers aren't the
:26:50. > :26:53.only ones who benefit from a decent sounding car. Recent statipltics
:26:53. > :26:57.suggest at low speeds pedestrians and cyclists are twice as likely to
:26:57. > :27:02.be hit by a hybrid electric vehicle than a normal car, simply because
:27:02. > :27:06.they're so quiet. So the researchers at Warwick have been
:27:07. > :27:11.testing how electric cars could sound to help pedestrians hear them
:27:11. > :27:15.coming. I couldn't resist this. The guys at the university have come up
:27:15. > :27:19.with this, this is elvin, and the clever thing is you can programme a
:27:19. > :27:23.different noise that it will emitt as it drivers along. You can choose
:27:23. > :27:33.whatever you want. For example you could make it sound like, I don't
:27:33. > :27:45.
:27:45. > :27:50.I felt a little self-conscious. I managed to not kill anyone. I got
:27:50. > :27:53.strange looks. You think about it, it's not a bad idea. We have all
:27:53. > :27:56.this emotional attachment to different sounds, but can you
:27:56. > :28:01.imagine in the future we'll be able to choose what sounds we have for
:28:02. > :28:06.our own cars, maybe you'll be able to download them a bit like a
:28:06. > :28:12.ringtone. Good idea? Or could be absolutely hideous.
:28:12. > :28:16.I definitely want a car that sounds like the millennium falcon. Or a
:28:16. > :28:22.snail or your maggot. That would be good. As a cyclist a loud car is a
:28:22. > :28:31.good car. Exactly. That is your lot this week. Nex week, it's all about
:28:31. > :28:36.securing your digital technology. Maggie Philbin is back asking how
:28:36. > :28:41.safe is your phone. Liz has her head in cloud storage and Jem helps
:28:41. > :28:45.me erase digital files for g. That's the sort of thing. Yeah I