Perception of the object attributes for sound synthesis purposes

International audienceThis paper presents a work in progress on the perception of the attributes of the shape of a resonant object. As part of the ecological approach to perception-assuming that a sound contains specific morphologies that convey perceptually relevant information responsible for its recognition, called invariants-the PRISM laboratory has developed an environmental sound synthesizer aiming to provide perceptual and intuitive controls for a non-expert user. Following a brief presentation of the di↵erent strategies for controlling the perceptual attributes of the object, we present an experiment conducted with calibrated sounds generated by a physically-informed synthesis model. This test focuses on the perception of the shape of the object, more particularly its width and thickness since these attributes, especially the thickness, have not been much studied in the literature from a perceptual point of view. The first results show that the perception of width is di cult for listeners, while the perception of thickness is much easier. This study allows us to validate the proposed control strategy. Further works are planned to better characterize the perceptual invariants relevant for shape perception

A Real-time Synthesizer of Naturalistic Congruent Audio-Haptic Textures

International audienceThis demo paper presents a multi-modal device able to generate real-time audio-haptic signal as response to the users' motion and produce naturalistic sensation. The device consists in a touch screen with haptic feedback based on ultrasonic friction modulation and a sound synthesizer. The device will help investigate audio-haptic interaction. In particular the system is built to allow for an exploration of di↵erent strategy of mapping audio and haptic signal to explore the limits of congruence. Such interactions could be the key to more informative and user-friendly touchscreens for Human-Machine-Interfaces

Perception of the object attributes for sound synthesis purposes

International audienceThis paper presents a work in progress on the perception of the attributes of the shape of a resonant object. As part of the ecological approach to perception-assuming that a sound contains specific morphologies that convey perceptually relevant information responsible for its recognition, called invariants-the PRISM laboratory has developed an environmental sound synthesizer aiming to provide perceptual and intuitive controls for a non-expert user. Following a brief presentation of the di↵erent strategies for controlling the perceptual attributes of the object, we present an experiment conducted with calibrated sounds generated by a physically-informed synthesis model. This test focuses on the perception of the shape of the object, more particularly its width and thickness since these attributes, especially the thickness, have not been much studied in the literature from a perceptual point of view. The first results show that the perception of width is di cult for listeners, while the perception of thickness is much easier. This study allows us to validate the proposed control strategy. Further works are planned to better characterize the perceptual invariants relevant for shape perception

Perception of the object attributes for sound synthesis purposes

International audienceThis paper presents a work in progress on the perception of the attributes of the shape of a resonant object. As part of the ecological approach to perception-assuming that a sound contains specific morphologies that convey perceptually relevant information responsible for its recognition, called invariants-the PRISM laboratory has developed an environmental sound synthesizer aiming to provide perceptual and intuitive controls for a non-expert user. Following a brief presentation of the di↵erent strategies for controlling the perceptual attributes of the object, we present an experiment conducted with calibrated sounds generated by a physically-informed synthesis model. This test focuses on the perception of the shape of the object, more particularly its width and thickness since these attributes, especially the thickness, have not been much studied in the literature from a perceptual point of view. The first results show that the perception of width is di cult for listeners, while the perception of thickness is much easier. This study allows us to validate the proposed control strategy. Further works are planned to better characterize the perceptual invariants relevant for shape perception

A Real-time Synthesizer of Naturalistic Congruent Audio-Haptic Textures

International audienceThis demo paper presents a multi-modal device able to generate real-time audio-haptic signal as response to the users' motion and produce naturalistic sensation. The device consists in a touch screen with haptic feedback based on ultrasonic friction modulation and a sound synthesizer. The device will help investigate audio-haptic interaction. In particular the system is built to allow for an exploration of di↵erent strategy of mapping audio and haptic signal to explore the limits of congruence. Such interactions could be the key to more informative and user-friendly touchscreens for Human-Machine-Interfaces

A Real-time Synthesizer of Naturalistic Congruent Audio-Haptic Textures

International audienceThis demo paper presents a multi-modal device able to generate real-time audio-haptic signal as response to the users' motion and produce naturalistic sensation. The device consists in a touch screen with haptic feedback based on ultrasonic friction modulation and a sound synthesizer. The device will help investigate audio-haptic interaction. In particular the system is built to allow for an exploration of di↵erent strategy of mapping audio and haptic signal to explore the limits of congruence. Such interactions could be the key to more informative and user-friendly touchscreens for Human-Machine-Interfaces

Initial contact shapes the perception of friction

Humans efficiently estimate the grip force necessary to lift a variety of objects, including slippery ones. The regulation of grip force starts with the initial contact and takes into account the surface properties, such as friction. This estimation of the frictional strength has been shown to depend critically on cutaneous information. However, the physical and perceptual mechanism that provides such early tactile information remains elusive. In this study, we developed a friction-modulation apparatus to elucidate the effects of the frictional properties of objects during initial contact. We found a correlation between participants’ conscious perception of friction and radial strain patterns of skin deformation. The results provide insights into the tactile cues made available by contact mechanics to the sensorimotor regulation of grip, as well as to the conscious perception of the frictional properties of an object.Human-Robot Interactio