Composing spatial soundscapes using acoustic metasurfaces

Graham, Thomas J. A.; Magnusson, Thor; Rajguru, Chinmay; Yazdan, Arash Pour; Jacobs, A.; Memoli, Gianluca

doi:10.1145/3356590.3356607

Cited by 6 publications

(4 citation statements)

References 28 publications

(30 reference statements)

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“…The aforesaid sound manipulation can benefit the study of multisensory integration in different ways. Since the direction of sound can be controlled with these acoustic lenses, it is possible to modulate the perceived position of the sound source, even when it is static ( Graham et al, 2019 ). This technology could then be integrated into classical paradigms used in multisensory integration studies, such as temporal/spatial ventriloquism ( Vroomen and de Gelder, 2004 ) and other experimental paradigms studying spatial localization and sound source location using multisensory signals ( Battaglia et al, 2003 ).…”

Section: Expanding Multisensory Integration: Current Tools/methods and Emerging Technologymentioning

confidence: 99%

Multisensory Integration as per Technological Advances: A Review

2021

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Multisensory integration research has allowed us to better understand how humans integrate sensory information to produce a unitary experience of the external world. However, this field is often challenged by the limited ability to deliver and control sensory stimuli, especially when going beyond audio–visual events and outside laboratory settings. In this review, we examine the scope and challenges of new technology in the study of multisensory integration in a world that is increasingly characterized as a fusion of physical and digital/virtual events. We discuss multisensory integration research through the lens of novel multisensory technologies and, thus, bring research in human–computer interaction, experimental psychology, and neuroscience closer together. Today, for instance, displays have become volumetric so that visual content is no longer limited to 2D screens, new haptic devices enable tactile stimulation without physical contact, olfactory interfaces provide users with smells precisely synchronized with events in virtual environments, and novel gustatory interfaces enable taste perception through levitating stimuli. These technological advances offer new ways to control and deliver sensory stimulation for multisensory integration research beyond traditional laboratory settings and open up new experimentations in naturally occurring events in everyday life experiences. Our review then summarizes these multisensory technologies and discusses initial insights to introduce a bridge between the disciplines in order to advance the study of multisensory integration.

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Section: Expanding Multisensory Integration: Current Tools/methods and Emerging Technologymentioning

confidence: 99%

Multisensory Integration as per Technological Advances: A Review

2021

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“…State‐of‐the‐art techniques for building SSMs include phased arrays of ultrasonic transducers [ 6 ] and acoustic metasurfaces. [ 7 ]…”

Section: Introductionmentioning

confidence: 99%

“…State-of-the-art techniques for building SSMs include phased arrays of ultrasonic transducers [6] and acoustic metasurfaces. [7] In phased arrays, transducers are driven by signals whose temporal shift and duty cycle determine their phase and amplitude, respectively. [8] The use of many transducers that can be quickly updated (e.g., 40 kHz) makes phased arrays powerful and highly reconfigurable tools for generation of custom pressure distributions.…”

Section: Introductionmentioning

confidence: 99%

Actively Reconfigurable Segmented Spatial Sound Modulators

Hardwick,

Kazemi,

Talamali

et al. 2023

Adv Materials Technologies

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High‐quality acousto‐holographic patterns and images, integral to applications like 3D displays, acoustophoresis, and midair haptics, require precise distribution of ultrasound waves to achieve. Essential tools for this task are spatial sound modulators (SSMs), which control constituent elements to enable dynamic distribution of sound pressure. However, current ultrasonic SSMs face limitations due to high costs and the intricate actuation of numerous small, closely spaced units. This study introduces “segmented SSMs,” novel devices that combine traditional acoustic metasurface pixel units into custom‐shaped segmented elements. These segmented SSMs reduce actuation costs and complexity while retaining pressure distribution quality. This approach includes a custom phase agglomeration algorithm (PAA), that offers a hierarchy of potential segmentation solutions for user selection. An SSM fabrication method is detailed using off‐the‐shelf 3D printers and bespoke control electronics, completing an end‐to‐end methodology from conception to realization. This approach is validated with two prototype SSM devices that focus sound waves and levitate polystyrene beads using dynamic segmented elements. Further enhancements to the technique are explored through hybrid SSM devices with both static and dynamic elements. The pipeline facilitates efficient SSM construction across diverse applications and invites the inception of future devices with varying sizes, uses, and actuation mechanisms.

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“…The research of acoustic metamaterials was initially inspired by the analogy of electromagnetic metamaterials [1][2][3][4]. On the basis of research on electromagnetic metamaterials, some scholars have turned their attention to the research of acoustic metamaterials with single and double negative properties and zero refractive index, to realize the supernormal acoustic wave transmission characteristics such as subwavelength imaging [5][6][7], acoustic tunneling [8][9][10], acoustic prism [11][12][13] and target stealth [14][15][16][17]. Acoustic metamaterials can exhibit double negative characteristics, with negative bulk modulus achievable through monopole resonance and negative mass density achievable through dipole resonance.…”

Section: Introductionmentioning

confidence: 99%

A football-like acoustic metamaterial with near-zero refractive index and broadband ventilated sound insulation

Wang,

Chen,

Liu

2023

J. Phys. D: Appl. Phys.

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Acoustic metamaterial with negative or near-zero refractive index exhibits extraordinary acoustic transmission characteristics, including acoustic total reflection, acoustic stealth and acoustic tunneling. Based on the coiled-up space structure, a football like near-zero refractive index acoustic metamaterial (FNZIM) was proposed. The result reveals the formation of two transmission peaks at 1270 Hz and 2300 Hz from the equivalent parameters by using the transfer matrix method. The first peak exhibits excellent air impedance matching, while the second peak arising from the metamaterial’s near-zero refractive index. We then constructed an acoustic prism using 15 cells of FNZIM and calculated the dispersion curve, revealing that the near-zero refractive index supernormal transmission of metamaterials is attributable to multimode degeneracy. Furthermore, we find that the positions of the transmission peaks and transmission loss can be adjusted by appropriately altering the structural parameters. Finally, we tested two groups of samples by using impedance tube four-channel to verify the accuracy of the simulation and the validity of insulation performance of FNZIM. The broadband ventilation sound insulation coupled structure is constructed, and the average sound insulation performance of this structure is more than 25 dB in the range of 1140–2210 Hz.

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Composing spatial soundscapes using acoustic metasurfaces

Cited by 6 publications

References 28 publications

Multisensory Integration as per Technological Advances: A Review

Multisensory Integration as per Technological Advances: A Review

Actively Reconfigurable Segmented Spatial Sound Modulators

A football-like acoustic metamaterial with near-zero refractive index and broadband ventilated sound insulation

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