Cross-Field Aerial Haptics

Ochiai, Yoichi; Kumagai, Kota; Hoshi, Takayuki; Hasegawa, S.; Hayasaki, Yoshio

doi:10.1145/2858036.2858489

Cited by 34 publications

(7 citation statements)

References 19 publications

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“…within skin receptor's response). This resulted in a force of 2.3mN behind the obstacle, perceivable to over 90% of the users according to related studies [48,49]. Our tests also revealed that the tactile sensation is still vivid in ≈3cm displacement in x and y-axes and ≈10cm in z axis.…”

Section: Dynamic Control Of the Self-bending Beamsupporting

confidence: 56%

SoundBender

Norasikin

Plasencia

Polychronopoulos

et al. 2018

Proceedings of the 31st Annual ACM Symposium on User Interface Software and Technology

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Ultrasound manipulation is growing in popularity in the HCI community with applications in haptics, on-body interaction, and levitation-based displays. Most of these applications share two key limitations: a) the complexity of the sound fields that can be produced is limited by the physical size of the transducers; and b) no obstacles can be present between the transducers and the control point. We present SoundBender, a hybrid system that overcomes these limitations by combining the versatility of phased arrays of transducers (PATs) with the precision of acoustic metamaterials. In this paper, we explain our approach to design and implement such hybrid modulators (i.e. to create complex sound fields) and methods to manipulate the field dynamically (i.e. stretch, steer). We demonstrate our concept using self-bending beams enabling both levitation and tactile feedback around an obstacle and present example applications enabled by SoundBender.

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Section: Dynamic Control Of the Self-bending Beamsupporting

confidence: 56%

SoundBender

Norasikin

Plasencia

Polychronopoulos

et al. 2018

Proceedings of the 31st Annual ACM Symposium on User Interface Software and Technology

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“…To maximize the effect, the field must be modulated at a frequency perceptible to our mechanoreceptors [42]. This principle has been used to create mid-air tactile displays [5] [43][44] [45] and even generate different tactile shapes [46] as the acoustic field is reshaped electronically at high-speeds and with sufficient accuracy.…”

Section: ) Ultrasonic Haptic Feedbackmentioning

confidence: 99%

Ultraino: An Open Phased-Array System for Narrowband Airborne Ultrasound Transmission

Marzo

Corkett

Drinkwater

2018

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

129

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Modern ultrasonic phased-array controllers are electronic systems capable of delaying the transmitted or received signals of multiple transducers. Configurable transmit-receive array systems, capable of electronic steering and shaping of the beam in near real-time, are available commercially, for example, for medical imaging. However, emerging applications, such as ultrasonic haptics, parametric audio, or ultrasonic levitation, require only a small subset of the capabilities provided by the existing controllers. To meet this need, we present Ultraino, a modular, inexpensive, and open platform that provides hardware, software, and example applications specifically aimed at controlling the transmission of narrowband airborne ultrasound. Our system is composed of software, driver boards, and arrays that enable users to quickly and efficiently perform research in various emerging applications. The software can be used to define array geometries, simulate the acoustic field in real time, and control the connected driver boards. The driver board design is based on an Arduino Mega and can control 64 channels with a square wave of up to 17 Vpp and /5 phase resolution. Multiple boards can be chained together to increase the number of channels. The 40-kHz arrays with flat and spherical geometries are demonstrated for parametric audio generation, acoustic levitation, and haptic feedback.

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“…More recently, with the use of 70 kHz (instead of 40 kHz) ultrasound transducers one could produce even smaller focused points [9]. It was also shown how similar devices could be used to create multiple focus points with different tactile properties [3], or mixed with other mid-air tactile display [21], thus increasing the range of applications for HCI. Ultrasound phased arrays have therefore rapidly became a reliable and attractive technology for both researchers and developers interested in mid-air tactile applications.…”

Section: Mid-air Tactile Displaysmentioning

confidence: 99%

Sampling Strategy for Ultrasonic Mid-Air Haptics

Frier

Pittera

Ablart

et al. 2019

Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems

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Figure 1: (a) A mid-air tactile pattern such as a circle is sampled into a set of successive positions, here 10. (b) Each sample point is presented during a given interval of time proportional to the total number of sample points. (c) Increasing the number of sample points will increase the rendering fidelity, but will also decrease the stimulation duration of each sample point. (d) Our study shows that changing the number of sample points affects the perceived strength of the pattern.

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Cross-Field Aerial Haptics

Cited by 34 publications

References 19 publications

SoundBender

SoundBender

Ultraino: An Open Phased-Array System for Narrowband Airborne Ultrasound Transmission

Sampling Strategy for Ultrasonic Mid-Air Haptics

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