Research Area
Year Published

103 Results

June 13, 2018

A Comparative Study of Phoneme- and Word-Based Learning of English Words Presented to the Skin

Eurohaptics

Past research has demonstrated that speech communication on the skin is entirely achievable. However, there is still no definitive conclusion on the best training method that minimizes the time it takes for users to reach a prescribed performance level with a speech communication device. The present study reports the design and testing of two learning approaches with a system that translates English phonemes to haptic stimulation patterns (haptic symbols).

By: Yang Jiao, Frederico M. Severgnini, Juan S. Martinez, Jaehong Jung, Hong Z Tan, Charlotte M. Reed, E. Courtenay Wilson, Frances Lau, Ali Israr, Robert Turcott, Keith Klumb, Freddy Abnousi

June 13, 2018

Improving Perception Accuracy with Multi-sensory Haptic Cue Delivery

Eurohaptics

This paper presents a novel, wearable, and multi-sensory haptic feedback system intended to support the transmission of large sets of haptic cues that are accurately perceived by the human user. Previous devices have focused on the optimization of haptic cue transmission using a single modality and have typically employed arrays of haptic tactile actuators to maximize information throughput to a user.

By: Nathan Dunkelberger, Joshua Bradley, Jennifer L. Sullivan, Ali Israr, Frances Lau, Keith Klumb, Freddy Abnousi, Marcia K. O’Malley

June 13, 2018

Efficient Evaluation of Coding Strategies for Transcutaneous Language Communication

Eurohaptics 2018

Communication of natural language via the skin has seen renewed interest with the advent of mobile devices and wearable technology. Efficient evaluation of candidate haptic encoding algorithms remains a significant challenge. We present 4 algorithms along with our methods for evaluation, which are based on discriminability, learnability, and generalizability. Advantageously, mastery of an extensive vocabulary is not required.

By: Robert Turcott, Jennifer Chen, Pablo Castillo, Brian Knott, Wahyudinata Setiawan, Forrest Briggs, Keith Klumb, Freddy Abnousi, Prasad Chakka, Frances Lau, Ali Israr

June 1, 2018

The Immersive VR Self: Performance, Embodiment and Presence in Immersive Virtual Reality Environments

Book chapter from A Networked Self and Human Augmentics, AI, Sentience

Virtual avatars are a common way to present oneself in online social interactions. From cartoonish emoticons to hyper-realistic humanoids, these online representations help us portray a certain image to our respective audiences.

By: Raz Schwartz, William Steptoe

May 27, 2018

Space domain-based selection of direct-sound bins in the context of improved robustness to reverberation in direction of arrival estimation

Euronoise 2018

Acoustic reverberation has a detrimental effect on many of the currently used microphone array processing methods. In particular, the performance of most direction of arrival estimation approaches is significantly degraded in the presence of coherent reflections. One general approach to improving the robustness to reverberation is to operate in the short-time Fourier transform domain and select the bins dominated by the direct sound, while rejecting those contaminated by reflections.

By: Vladimir Tourbabin, David Lou Alon, Ravish Mehra
Areas: AR/VR

April 21, 2018

Speech Communication through the Skin: Design of Learning Protocols and Initial Findings

Computer Human Interaction (CHI)

This study reports the design and testing of learning protocols with a system that translates English phonemes to haptic stimulation patterns (haptic symbols).

By: Jaehong Jung, Yang Jiao, Frederico M. Severgnini, Hong Z Tan, Charlotte M. Reed, Ali Israr, Frances Lau, Freddy Abnousi

April 21, 2018

Feeling Speech on the Arm

Computer Human Interaction (CHI)

In this paper, we introduce a transcutaneous language communication (TLC) system that transmits a tactile representation of spoken or written language to the arm.

By: Jennifer Chen, Pablo Castillo, Robert Turcott, Ali Israr, Frances Lau

April 21, 2018

Towards Pleasant Touch: Vibrotactile Grids for Social Touch Interactions

Computer Human Interaction (CHI)

In this paper, we realize a wearable tactile device that delivers smooth pleasant strokes, those resemble of caressing and calming sensations, on the forearm.

By: Ali Israr, Freddy Abnousi

April 21, 2018

Communication Behavior in Embodied Virtual Reality

Human Computer Interaction Conference (CHI)

To investigate communication behavior with embodied virtual reality onto an avatar in a virtual 3D environment, we had 30 dyads complete two tasks using a shared visual workspace: negotiating an apartment layout and placing model furniture on an apartment floor plan.

By: Harrison Jesse Smith, Michael Neff

April 17, 2018

Evaluation of near field distance perception in virtual environments

175th Meeting of the Acoustical Society of America

Binaural synthesis of spatial audio for virtual and augmented environments is typically performed by convolving an anechoic signal with impulse responses measured at the listener’s ears using a source at a fixed distance. This method is accurate for sounds presented at the measured impulse response’s distance, and for more distant sources, decreasing intensity provides a reasonable approximation. However, sources nearer than 1 m provide additional distance cues.

By: Philip Robinson
Areas: AR/VR