Design and Evaluation of Identifiable Key-Click Signals for Mobile Devices.
Identifieur interne : 00A670 ( Main/Curation ); précédent : 00A669; suivant : 00A671Design and Evaluation of Identifiable Key-Click Signals for Mobile Devices.
Auteurs : Hsiang-Yu Chen ; Jaeyoung Park ; S. Dai ; H Z TanSource :
- IEEE transactions on haptics [ 1939-1412 ]
Abstract
As touch based input becomes more popular in mobile devices, there is an increasing need for haptic feedback on key-less input surface. Four experiments were conducted to design and evaluate identifiable emulated key-click signals using a piezoelectric actuator. Experiments I and II assessed the information transmission capacity for the amplitude, frequency, and number of cycles of raised cosine waveforms used to drive the piezo actuators under fixed- and roving-background conditions, respectively. Experiment III estimated the total information transfer for all three parameters. The results were used to reduce the number of stimulus alternatives in the key-click signal set with the goal to achieve perfect identification performance. Experiment IV verified that up to 5 to 6 identifiable key-click signals could be achieved with the experimental setup. The present study outlines an information theoretic approach to conducting identification experiments to guide the design of and to evaluate a perfectly identifiable stimulus set. The methodology can be applied to other applications in need of perceptually identifiable stimulation patterns.
DOI: 10.1109/TOH.2011.21
PubMed: 26963652
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