{"id":1065,"date":"2019-11-21T15:49:53","date_gmt":"2019-11-21T15:49:53","guid":{"rendered":"http:\/\/horizon.peachpuff-wolverine-566518.hostingersite.com\/?p=1065"},"modified":"2019-11-21T15:49:53","modified_gmt":"2019-11-21T15:49:53","slug":"levitation-touch-and-sound-how-youll-be-able-to-feel-videogames-in-the-future","status":"publish","type":"post","link":"https:\/\/scienceblog.com\/horizon\/1065\/levitation-touch-and-sound-how-youll-be-able-to-feel-videogames-in-the-future\/","title":{"rendered":"Levitation, touch and sound \u2013 how you\u2019ll be able to feel videogames in the future"},"content":{"rendered":"
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by Kelly Oakes<\/div>\n<\/div>\n
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Despite advances in both virtual and augmented reality technology in the last few years, there\u2019s one area that remains neglected: touch. With your VR headset on, you might be able to explore the sights of a vast forest and hear birdsong all around you, but you won\u2019t feel the dampness of the moss on a tree trunk or the squelch of leaves underfoot.<\/strong><\/h3>\n<\/div>\n<\/div>\n
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And yet touch is an integral part of how we interact with the world. A hug from a loved one can make a terrible day feel better, the feeling of wind whipping past while riding a bike can be exhilarating, even tactile feedback from a button at a pedestrian crossing is reassuring.<\/p>\n

\u2018You explore and understand the world through all of your senses, but when you come to a computer, you’re really cut off from some of those,\u2019 says Stephen Brewster, a professor of human-computer interaction at the University of Glasgow, UK. \u2018Thinking of the varied interactions you have with the everyday physical world outside of computers, could we not bring some of that in?\u2019<\/p>\n

Bringing elements of touch into our digital lives is exactly what he and other researchers working on haptic \u2013 or touch-based \u2013 technology are trying to do. Prof. Brewster is part of\u00a0Levitate<\/a>, a project which aims to create a prototype of a levitating object that users can reach into and manipulate as easily as if it were digital pixels on a screen, complete with tactile feedback.<\/p>\n

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‘It’s very difficult to make hardware that’s as good as our as our skin is.’<\/p>\n

Professor Stephen Brewster, University of Glasgow, UK<\/p>\n<\/blockquote>\n<\/div>\n<\/div>\n

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Ultrasound<\/strong><\/p>\n

The idea is to use ultrasound \u2013 the same technology used in car sensors to stop you hitting the wall when parking \u2013 to create three different effects. The first is \u2018feelable forces\u2019 in mid-air, imitating the feeling of touch without there being a physical object present. The second is what\u2019s known as parametric sound, where a speaker can emit highly focussed audio that is heard just by one person and not, for example, the person sitting next to them. And the third is what gives the project its name: levitation of small objects.<\/p>\n

Now the team is beginning to bring all three aspects together \u2013 touch, sound, and levitation \u2013 with the aim to eventually to run them off the same ultrasound speaker system.<\/p>\n

The work is not without challenges. Prof. Brewster and his colleagues have levitated multiple small polystyrene beads in the shape of a cube that can be rotated in mid-air in response to gestures. Adding this interaction with the cube was a challenge. \u2018You want objects to be able to change shape or deform (when someone pushes them),\u2019 he said. \u2018It becomes complex to enable those dynamic movements in response to your gestures.\u2019<\/p>\n

Levitating beads is one thing, but making them responsive to gestures is the real challenge. Video credit – Euan Freeman\/University of Glasgow<\/em><\/p>\n

The sensation of touch comes about when ultrasound waves from different emitters combine at focal points that are moving incredibly quickly, creating the illusion of a solid object in mid-air. The idea is that if you\u2019re wearing an AR or VR headset and seeing a virtual object in front of you \u2013 or interacting with some combination of physical pixels like the Levitate project\u2019s polystyrene beads \u2013 you could also feel the object as you interact with it.<\/p>\n

Sensitive<\/strong><\/p>\n

Part of the reason our sense of touch has been so far neglected in the digital realm is that it\u2019s just harder to recreate touch than an image or a sound. \u2018Our fingers are so sensitive, our skin is so sensitive, it’s very difficult to make hardware that’s as good as our as our skin is,\u2019 said Prof. Brewster. \u2018So oftentimes those touch-based interactions are a bit poor.\u2019<\/p>\n

When you run your finger across your desk, say, the surface of your skin moves up and down, creating waves that travel through the layers of your skin and down to your bone. On their way, they hit mechanical receptors with nerves that fire an electrical signal to your brain.<\/p>\n

Dr Tom Montenegro-Johnson and Dr James Andrews, applied mathematicians at the University of Birmingham, UK, are modelling this process \u2013 up to the point at which the receptor sends a signal to the brain \u2013\u00a0to help create more realistic haptic feedback.<\/p>\n

\u2018If we can recreate the first part of that process as close as possible, with our haptic devices, the rest of it should hopefully take care of itself,\u2019 said Dr Montenegro-Johnson.<\/p>\n

He\u2019s been able to take advantage of a wealth of mathematics that already exists in an entirely separate area of science. \u2018When we started this, we noticed that the skin on humans is, in a sense, very similar to the skin on the Earth, mathematically speaking,\u2019 he said. \u2018There’s an almost one-to-one map between what happens in earthquakes and what happens when you rub your finger lightly over a surface.\u2019<\/p>\n

The research is part of\u00a0H-Reality<\/a>, a project, like Levitate, using ultrasound to create sensations of touch in mid-air. The idea is to use this new model of touch to create the next generation of wearable haptics \u2013 a device you wear on your hand that provides feedback on both the shape and texture of digital objects.<\/p>\n

Bomb disposal<\/strong><\/p>\n

Dr Montenegro-Johnson thinks the most widespread application for this kind of technology will be video gaming. But there are other, more niche but perhaps more worthwhile, applications, too. Bomb disposal robots could pass information on to a computer programme that feeds into a wearable haptic device for the person controlling it, for example.<\/p>\n

\u2018If you have a robot arm defusing a bomb, or doing some delicate operation, and you’re controlling it via a VR interface, we will now be able to give you touch feedback,\u2019 said Dr Montenegro-Johnson.<\/p>\n

With levitating objects that provide touch feedback, scientists could sit around a model of a protein floating in mid-air and manipulate it as they discuss it, or designers could reach in and make changes to their work in a real 3D model, not a 2D computer-simulation of one. This technology could also be added to the devices we already use daily. \u2018You might put your hand over the phone and feel the number of messages,\u2019 said Prof. Brewster.<\/p>\n

As computers of all sizes encroach into our lives ever further, bringing in more of our senses would enrich our interactions with technology. \u2018Rather than just having massive screens and me stabbing a keyboard with my fingers… I can do a lot more than that, as a human,\u2019 said Prof. Brewster. \u2018Why do my devices not pay any attention?\u2019<\/p>\n

The research in this article was funded by the EU. If you liked this article, please consider sharing it on social media.<\/em><\/p>\n

Originally published on Horizon<\/a>.\u00a0<\/em><\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

by Kelly Oakes Despite advances in both virtual and augmented reality technology in the last few years, there\u2019s one area that remains neglected: touch. With your VR headset on, you might be able to explore the sights of a vast forest and hear birdsong all around you, but you won\u2019t feel the dampness of the … Read more<\/a><\/p>\n","protected":false},"author":298,"featured_media":1066,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"generate_page_header":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[112],"tags":[331,79,24,28,330],"class_list":["post-1065","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ict","tag-haptics","tag-research","tag-science","tag-technology","tag-virtual-reality"],"yoast_head":"\nLevitation, touch and sound \u2013 how you\u2019ll be able to feel videogames in the future - Horizon Magazine Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/scienceblog.com\/horizon\/1065\/levitation-touch-and-sound-how-youll-be-able-to-feel-videogames-in-the-future\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Levitation, touch and sound \u2013 how you\u2019ll be able to feel videogames in the future\" \/>\n<meta property=\"og:description\" content=\"by Kelly Oakes Despite advances in both virtual and augmented reality technology in the last few years, there\u2019s one area that remains neglected: touch. 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