Knobs, Sliders for Better Control of smartphones?

By: Gizbot Bureau

With smartphones' practical applications increasing by the day, touchscreens are not likely to suffice as control surfaces.

Knobs, Sliders for Better Control of smartphones?

Researchers have developed an inexpensive alternative -- a toolbox of physical knobs, sliders and other mechanisms that can be readily added to any device.

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The researchers drew inspiration from wind instruments in devising these mechanisms, which they call Acoustruments. The idea is to use pluggable plastic tubes and other structures to connect the smartphone's speaker with its microphone.

Knobs, Sliders for Better Control of smartphones?

The device can then be controlled by acoustically altering sounds as they pass through this system.

"We're providing people with tangible interactivity at basically no cost," said lead author Gierad Laput from Carnegie Mellon's Human-Computer Interaction Institute (HCII).

Knobs, Sliders for Better Control of smartphones?

People who want to control a smartphone application while their eyes need to be focused elsewhere, for instance, might be less distracted by a tangible knob or button made possible with Acoustruments than with trying to glance at a touchscreen.

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"Using smartphones as computers to control toys, appliances and robots already is a growing trend, particularly in the maker community.

Knobs, Sliders for Better Control of smartphones?

"Acoustruments can make the interactivity of these new 'pluggable' applications even richer," Laput added.

Applications that use smartphones as virtual reality displays make it impossible to use the touchscreen controls at all. Acoustruments enable users to make adjustments without disrupting the virtual reality experience.

The CMU and Disney researchers have used Acoustruments to build an interactive doll which responds when its tummy is poked, a smartphone case that can sense when it has been placed on a table or is being hand carried, and an alarm clock that provides physical on/off and snooze buttons.

Acoustruments can be made with 3-D printers, with injection moulds, or even by hand in some cases, Laput said.

Laput's study is scheduled to be presented April 22 at CHI 2015, the Conference on Human Factors in Computing Systems, in Seoul, Korea.

Source: IANS

Source: Carnegie Mellon University

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