inzicht - Human-Computer Interaction - # Adaptive mid-air ultrasound haptic design

AdapTics: A Toolkit for Designing and Integrating Real-Time Adaptive Mid-Air Ultrasound Tactons

Q: How could the AdapTics toolkit be extended to support the design and integration of adaptive haptic feedback across other modalities beyond mid-air ultrasound, such as vibrotactile or force feedback?

To extend the AdapTics toolkit for other modalities like vibrotactile or force feedback, the toolkit could incorporate additional design parameters specific to these modalities. For vibrotactile feedback, the toolkit could include options for adjusting vibration frequency, intensity, and pattern. Designers could create adaptive vibrotactile patterns that change based on user interactions or environmental inputs. Similarly, for force feedback, the toolkit could offer parameters for adjusting the force magnitude, direction, and duration. Designers could create adaptive force feedback responses that vary based on the user's actions or application states. Additionally, the toolkit could provide a library of pre-designed patterns and effects for vibrotactile and force feedback, similar to the existing library for mid-air ultrasound tactons. This would enable designers to quickly prototype and iterate on adaptive haptic feedback designs across different modalities. Integration with hardware devices for vibrotactile and force feedback would also be essential. The toolkit could include APIs or plugins to communicate with a variety of haptic devices, allowing designers to test their adaptive feedback designs in real-time on different hardware platforms.

Q: What are the potential challenges and limitations of using adaptive haptic feedback, and how can designers ensure the adaptations enhance rather than distract from the user experience?

One challenge of using adaptive haptic feedback is ensuring that the adaptations are meaningful and enhance the user experience rather than being distracting or overwhelming. Designers must carefully consider the context in which the adaptive feedback will be used and tailor the adaptations to provide relevant and useful information to the user. Another challenge is maintaining a balance between responsiveness and subtlety in the adaptive feedback. Overly frequent or drastic adaptations can be jarring to users, while subtle and well-timed adaptations can enhance immersion and engagement. Designers should conduct user testing and iterate on their designs to find the right balance. To ensure that adaptations enhance the user experience, designers should involve end-users in the design process through user testing and feedback sessions. By gathering input from the target audience, designers can better understand user preferences and expectations, allowing them to create adaptive haptic feedback that aligns with user needs and preferences. Designers should also consider the cognitive load imposed by adaptive haptic feedback. Too many simultaneous adaptations or complex patterns can overwhelm users and detract from the overall experience. Simplifying and streamlining the adaptive feedback design can help ensure that users can easily interpret and benefit from the feedback.

Q: How might the concepts of adaptive haptics in AdapTics inspire the development of adaptive interfaces and experiences in other sensory modalities, such as adaptive audio or adaptive visuals?

The concepts of adaptive haptics in AdapTics can serve as a model for the development of adaptive interfaces and experiences in other sensory modalities, such as adaptive audio or adaptive visuals. By incorporating similar principles of real-time adjustments based on user interactions or environmental inputs, designers can create more engaging and immersive experiences across different sensory modalities. For adaptive audio, designers could explore dynamically changing soundscapes based on user actions or application states. Similar to adaptive haptic feedback, adaptive audio could adjust volume, pitch, tempo, or spatial positioning in response to user interactions, creating a more interactive and personalized auditory experience. In the realm of adaptive visuals, concepts from AdapTics could inspire the development of visuals that adapt in real-time based on user inputs or external factors. Designers could create dynamic visual effects, animations, or interfaces that respond to user gestures, movements, or preferences, enhancing the overall user experience and engagement. Overall, the principles of adaptivity and real-time adjustments introduced in AdapTics can be applied to various sensory modalities to create more immersive, interactive, and personalized interfaces and experiences for users. By leveraging adaptive design techniques, designers can tailor sensory feedback to individual users' needs and preferences, leading to more engaging and impactful user experiences.

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AdapTics is a toolkit that enables designers to rapidly prototype and efficiently render adaptive mid-air ultrasound tactons, which can dynamically change in real-time in response to user interactions or environmental states.

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The paper introduces AdapTics, a new open-source toolkit for designing and integrating adaptive mid-air ultrasound tactons. The AdapTics Designer is a graphical interface that allows designers to create adaptive tactons by linking their parameters to external variables using value mapping or conditional triggers. The toolkit also includes the AdapTics Engine, a software library and Unity package that can render these adaptive tactons in real-time at high update rates to meet the requirements of mid-air ultrasound haptic technology.

The paper first presents a design space for adaptive mid-air ultrasound tactons, which includes five key dimensions: adaptation granularity, timing, spatial configuration, feel, and type of transformation. This design space guides designers in exploring and comparing different adaptive tacton designs.

The authors then describe the key features of the AdapTics toolkit, including the Designer's support for non-adaptive tacton design, the integration of a 3D simulation environment for testing adaptive tactons, and the Engine's hardware-agnostic architecture and high-performance rendering capabilities.

Finally, the paper reports on a user study with 12 XR and haptic designers. The study compared the use of AdapTics with and without adaptive features, measuring the Creativity Support Index (CSI) to quantify the tool's effectiveness. The results showed significant improvements in Exploration, Expressiveness, and overall creativity support when the adaptive features were present, demonstrating the value of AdapTics for creative haptic design.

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"Mid-air ultrasound haptic technology can enhance user interaction and immersion in extended reality (XR) applications through contactless touch feedback."
"Existing design tools for mid-air haptics primarily support creating tactile sensations (i.e., tactons) which cannot change at runtime."
"AdapTics enables rapid prototyping and efficient rendering of adaptive mid-air ultrasound tactons, which can dynamically change in real-time in response to user interactions or environmental states."
"The AdapTics Engine can evaluate and render adaptive tactons in real-time, an order of magnitude faster than the update rate of typical ultrasound haptic devices."

Citaten

"Unlike fixed tactons, adaptive tactons offer designers the flexibility to adjust the haptic output at runtime in response to one or more inputs."
"AdapTics facilitates the exploration of the large design space of mid-air ultrasound haptics with a graphical interface, allowing designers to quickly experiment and iterate their designs."
"The results showed significant improvements in Exploration, Expressiveness, and overall creativity support when the adaptive features were present, demonstrating the value of AdapTics for creative haptic design."

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AdapTics: A Toolkit for Creative Design and Integration of Real-Time Adaptive Mid-Air Ultrasound Tactons

by Kevin John,Y... om arxiv.org 05-01-2024

https://arxiv.org/pdf/2404.19275.pdf

AdapTics: A Toolkit for Creative Design and Integration of Real-Time Adaptive Mid-Air Ultrasound Tactons

Diepere vragen

How could the AdapTics toolkit be extended to support the design and integration of adaptive haptic feedback across other modalities beyond mid-air ultrasound, such as vibrotactile or force feedback?

To extend the AdapTics toolkit for other modalities like vibrotactile or force feedback, the toolkit could incorporate additional design parameters specific to these modalities. For vibrotactile feedback, the toolkit could include options for adjusting vibration frequency, intensity, and pattern. Designers could create adaptive vibrotactile patterns that change based on user interactions or environmental inputs. Similarly, for force feedback, the toolkit could offer parameters for adjusting the force magnitude, direction, and duration. Designers could create adaptive force feedback responses that vary based on the user's actions or application states.
Additionally, the toolkit could provide a library of pre-designed patterns and effects for vibrotactile and force feedback, similar to the existing library for mid-air ultrasound tactons. This would enable designers to quickly prototype and iterate on adaptive haptic feedback designs across different modalities.
Integration with hardware devices for vibrotactile and force feedback would also be essential. The toolkit could include APIs or plugins to communicate with a variety of haptic devices, allowing designers to test their adaptive feedback designs in real-time on different hardware platforms.

What are the potential challenges and limitations of using adaptive haptic feedback, and how can designers ensure the adaptations enhance rather than distract from the user experience?

One challenge of using adaptive haptic feedback is ensuring that the adaptations are meaningful and enhance the user experience rather than being distracting or overwhelming. Designers must carefully consider the context in which the adaptive feedback will be used and tailor the adaptations to provide relevant and useful information to the user.
Another challenge is maintaining a balance between responsiveness and subtlety in the adaptive feedback. Overly frequent or drastic adaptations can be jarring to users, while subtle and well-timed adaptations can enhance immersion and engagement. Designers should conduct user testing and iterate on their designs to find the right balance.
To ensure that adaptations enhance the user experience, designers should involve end-users in the design process through user testing and feedback sessions. By gathering input from the target audience, designers can better understand user preferences and expectations, allowing them to create adaptive haptic feedback that aligns with user needs and preferences.
Designers should also consider the cognitive load imposed by adaptive haptic feedback. Too many simultaneous adaptations or complex patterns can overwhelm users and detract from the overall experience. Simplifying and streamlining the adaptive feedback design can help ensure that users can easily interpret and benefit from the feedback.

How might the concepts of adaptive haptics in AdapTics inspire the development of adaptive interfaces and experiences in other sensory modalities, such as adaptive audio or adaptive visuals?

The concepts of adaptive haptics in AdapTics can serve as a model for the development of adaptive interfaces and experiences in other sensory modalities, such as adaptive audio or adaptive visuals. By incorporating similar principles of real-time adjustments based on user interactions or environmental inputs, designers can create more engaging and immersive experiences across different sensory modalities.
For adaptive audio, designers could explore dynamically changing soundscapes based on user actions or application states. Similar to adaptive haptic feedback, adaptive audio could adjust volume, pitch, tempo, or spatial positioning in response to user interactions, creating a more interactive and personalized auditory experience.
In the realm of adaptive visuals, concepts from AdapTics could inspire the development of visuals that adapt in real-time based on user inputs or external factors. Designers could create dynamic visual effects, animations, or interfaces that respond to user gestures, movements, or preferences, enhancing the overall user experience and engagement.
Overall, the principles of adaptivity and real-time adjustments introduced in AdapTics can be applied to various sensory modalities to create more immersive, interactive, and personalized interfaces and experiences for users. By leveraging adaptive design techniques, designers can tailor sensory feedback to individual users' needs and preferences, leading to more engaging and impactful user experiences.