Towards a wireless multimodal speech capture system

Sebkhi, Nordine; Desai, Dhyey; Khan, Amir Sada; Prasad, N. H.; Banerjee, Shurjo; Eng, Justin; Wilson, Kimberly R.; Ghovanloo, Maysam

doi:10.1109/biocas.2016.7833730

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…[ 40 ] This finding suggests that the proposed HT‐PENG has potential applications in the development of vibrotactile hearing aids designed to assist in speech rehabilitation training. [ 64 ] It is essential to note that facial expressions of emotions, such as sadness, happiness, anger, confusion, and fear, possess a signal value indicative of an individual's current emotional state. [ 65 ] In this context, variations in forehead wrinkles play a critical role in studying facial appearance and expressions in humans.…”

Section: Resultsmentioning

confidence: 99%

Giant Energy Harvesting via Maxwell Displacement Current Enhancement Using Metal Sheet Interspaced Hetero‐Layer Structured Piezo‐Composite Nanofiber Device

Mahanty,

Ghosh,

Prasad

et al. 2023

Adv Funct Materials

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The limited performance of piezoelectric nanogenerators (PENGs) has hindered their practical applications in self‐powered electronics. To address these limitations, this study presents a new design of a PENG that incorporates hetero‐layer structured piezo‐composite nanofibers with interspaced metal sheets. The hetero‐layer structure consists of alternating layers of ferroelectric barium titanate (BT) nanoparticles interfaced with poly(vinylidene fluoride‐co‐trifluoroethylene) (P(VDF‐TrFE)) composite nanofibers (P(VDF‐TrFE)/BT), and conductive graphite nano‐sheets (GNS)‐embedded P(VDF‐TrFE) composite nanofibers (P(VDF‐TrFE)/GNS) mats. The inclusion of interspaced metal sheets in the device configuration enhances the stress concentration effect, thereby effectively distributing the applied mechanical vibrations. Simultaneously, the P(VDF‐TrFE)/BT composite nanofibers improve the piezoelectric coefficient (187.86 pC N−1), while the P(VDF‐TrFE)/GNS composite nanofibers reduce the internal impedance of the device. These combined enhancements result in an increased Maxwell displacement current and power output. Consequently, the hetero‐layer structured PENG exhibits an impressive open circuit voltage (Voc) output of 350 V, a short circuit current (Isc) output of 6 µA, and a power output of 3.62 W m−2. Moreover, the developed PENG demonstrates extraordinary energy harvesting performance under harsh vibrations caused by human musculoskeletal movements, as well as subtle vibrations from heart pulses, emotional changes, and speech recognition. Additionally, the PENG shows its potential use in wearable self‐powered wireless e‐health systems.

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Section: Resultsmentioning

confidence: 99%

Giant Energy Harvesting via Maxwell Displacement Current Enhancement Using Metal Sheet Interspaced Hetero‐Layer Structured Piezo‐Composite Nanofiber Device

Mahanty,

Ghosh,

Prasad

et al. 2023

Adv Funct Materials

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“…In order to understand the speech production process more deeply, many studies on articulatory movements have been done by X‐ray technique 61 or pulsed‐echo ultrasound 62 . Because of some obvious limitations of the above methods, many efforts have been done to develop a magnetic sensing system 63,64 and a magnetic localization technique 65,66 to measure the articulatory movements simply, safely, and accurately.…”

Section: The Applications In Biomedicinementioning

confidence: 99%

“…They used magnetic sensors to detect the magnetic field generated from a permanent magnet which is fitted on the tongue surface during the speech in order to obtain relevant data. Sebkhi et al 66 developed a multimodal speech capture system (MSCS) to track tongue movements remotely and wirelessly. During pronunciation, the magnetic field generated by a disk‐shaped magnetic tracer attached near the tip of the tongue will be captured by an external tri‐axial magnetometer, and the process will be recorded with a camera and microphone.…”

Section: The Applications In Biomedicinementioning

confidence: 99%

The progress of magnetic sensor applied in biomedicine: A review of non‐invasive techniques and sensors

Cheng

Alhalili

et al. 2020

J Chinese Chemical Soc

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With the rapid development of sensing technology, it has attracted tremendous interests in the field of biomedicine because of its good biocompatibility, reliability, and safety. In comparison to other sensors, magnetic sensor has a broad application prospect in biomedical field due to its high sensitivity, small size, and intriguing non‐invasive detection property. The purpose of this review is to discuss the applications of magnetic sensors in the biomedical field. First, some widely used magnetic sensors are reviewed based on their working principle and characteristics. Then, the applications of magnetic sensors in biomedical field are introduced from the aspects of magnetic label‐based bioassays, detection of biological movement, and biology magnetism. Finally, the future development direction and prospect of magnetic sensors in biomedical field are prospected. This review will provide a general outlook for the applications of magnetic sensors in biomedicine.

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Towards Phoneme Landmarks Identification for American-English using a Multimodal Speech Capture System

Sebkhi

Yunusova

Ghovanloo

2018

2018 IEEE Biomedical Circuits and Systems Conference (BioCAS)

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Towards a wireless multimodal speech capture system

Cited by 3 publications

References 9 publications

Giant Energy Harvesting via Maxwell Displacement Current Enhancement Using Metal Sheet Interspaced Hetero‐Layer Structured Piezo‐Composite Nanofiber Device

Giant Energy Harvesting via Maxwell Displacement Current Enhancement Using Metal Sheet Interspaced Hetero‐Layer Structured Piezo‐Composite Nanofiber Device

The progress of magnetic sensor applied in biomedicine: A review of non‐invasive techniques and sensors

Towards Phoneme Landmarks Identification for American-English using a Multimodal Speech Capture System

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