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Sampling strategy for ultrasonic mid-air haptics
conference contribution
posted on 2023-06-09, 16:13 authored by William Frier, Dario Pittera, Damien Ablart, Marianna Obrist, Sriram SubramanianMid-air tactile stimulation using ultrasonics has been used in a variety of human computer interfaces in the form of prototypes as well as products. When generating these tactile patterns with mid-air tactile ultrasonic displays, the common approach has been to sample the patterns using the hardware update rate capabilities to their full extent. In the current study we show that the hardware update rate can impact perception, but unexpectedly we find that higher update rates do not improve pattern perception. In a first user study, we highlight the effect of update rate on the perceived strength of a pattern, especially for patterns rendered at slow rate of less than 10 Hz. In a second user study, we identify the evolution of the optimal update rate according to variations in pattern size. Our main results show that update rate should be designated as additional parameter for tactile patterns. We also discuss how the relationships we defined in the current study can be implemented into designer tools so that designers remain oblivious to this additional complexity.
Funding
SenseX - Sensory Experiences for Interactive Technologies; G1589; EUROPEAN UNION; H2020-ERC-2014-STG-638605
Levitate: Levitation with localised tactile and audio feedback for mid-air interactions; G1987; European Union; 737087
History
Publication status
- Published
File Version
- Accepted version
Journal
CHI '19 Proceedings of the 2019 CHI Conference on Human Factors in Computing SystemsPublisher
Association for Computing MachineryExternal DOI
Event name
ACM CHI Conference on Human Factors in Computing Systems 2019Event location
Glasgow, Scotland, UKEvent type
conferenceEvent date
4-9 May 2019ISBN
978145035970Department affiliated with
- Informatics Publications
Research groups affiliated with
- Creative Technology Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2019-01-30First Open Access (FOA) Date
2019-01-30First Compliant Deposit (FCD) Date
2019-01-29Usage metrics
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