Professor James Gilbert's Outputs (21)

Monitoring of Curing Process of Epoxy Resin by Long-Period Fiber Gratings (2024)
Journal Article
Ivanov, O. V., Bhavsar, K., Morgan-Clague, O., & Gilbert, J. M. (2024). Monitoring of Curing Process of Epoxy Resin by Long-Period Fiber Gratings. Sensors, 24(11), Article 3397. https://doi.org/10.3390/s24113397

The curing of epoxy resin is a complex thermo-chemical process that is difficult to monitor using existing sensing systems. We monitored the curing process of an epoxy resin by using long-period fiber gratings. The refractive index of the epoxy resin... Read More about Monitoring of Curing Process of Epoxy Resin by Long-Period Fiber Gratings.

Robustness of embedded fibre optic sensor mesh configurations for monitoring composite structures (2024)
Journal Article
Gilbert, J. M., Bhavsar, K., & Ivanov, O. V. (2024). Robustness of embedded fibre optic sensor mesh configurations for monitoring composite structures. Sensors and Actuators A: Physical, 373, Article 115445. https://doi.org/10.1016/j.sna.2024.115445

Fibre optic sensors are attractive for monitoring of composite structures but the significant risk of damage to fibres where they enter the structure and within the structure itself can make their use unreliable. Mesh configurations of embedded fibre... Read More about Robustness of embedded fibre optic sensor mesh configurations for monitoring composite structures.

Detection of nitrous oxide using infrared optical plasmonics coupled with carbon nanotubes (2020)
Journal Article
Allsop, T., Al Araimi, M., Neal, R., Wang, C., Culverhouse, P., Ania-Castañón, J. D., Webb, D. J., Davey, P., Gilbert, J. M., & Rozhin, A. (2020). Detection of nitrous oxide using infrared optical plasmonics coupled with carbon nanotubes. Nanoscale advances, 2(10), 4615-4626. https://doi.org/10.1039/d0na00525h

© The Royal Society of Chemistry 2020. Interest in gas sensing using functionalised carbon nanotubes is a major area of research that utilises changes in their electrical properties induced by the reaction with a specific gas. This paper describes sp... Read More about Detection of nitrous oxide using infrared optical plasmonics coupled with carbon nanotubes.

Direct Speech Reconstruction from Articulatory Sensor Data by Machine Learning (2017)
Journal Article
Gonzalez, J. A., Cheah, L. A., Gomez, A. M., Green, P. D., Gilbert, J. M., Ell, S. R., Moore, R. K., & Holdsworth, E. (2017). Direct Speech Reconstruction from Articulatory Sensor Data by Machine Learning. IEEE/ACM transactions on audio, speech, and language processing, 25(12), 2362-2374. https://doi.org/10.1109/TASLP.2017.2757263

© 2014 IEEE. This paper describes a technique that generates speech acoustics from articulator movements. Our motivation is to help people who can no longer speak following laryngectomy, a procedure that is carried out tens of thousands of times per... Read More about Direct Speech Reconstruction from Articulatory Sensor Data by Machine Learning.

Nonlinear Modeling and Verification of a Heaving Point Absorber for Wave Energy Conversion (2017)
Journal Article
Guo, B., Patton, R., Jin, S., Gilbert, J., & Parsons, D. (2017). Nonlinear Modeling and Verification of a Heaving Point Absorber for Wave Energy Conversion. IEEE Transactions on Sustainable Energy, 9(1), 453-461. https://doi.org/10.1109/tste.2017.2741341

Although the heaving Point Absorber (PA) concept is well known in wave energy conversion research, few studies focus on appropriate modelling of non-linear fluid viscous and mechanical friction dynamics. Even though these concepts are known to have n... Read More about Nonlinear Modeling and Verification of a Heaving Point Absorber for Wave Energy Conversion.

Restoring speech following total removal of the larynx by a learned transformation from sensor data to acoustics (2017)
Journal Article
Gilbert, J. M., Gonzalez, J. A., Cheah, L. A., Ell, S. R., Green, P., Moore, R. K., & Holdsworth, E. (2017). Restoring speech following total removal of the larynx by a learned transformation from sensor data to acoustics. The Journal of the Acoustical Society of America, 141(3), EL307-EL313. https://doi.org/10.1121/1.4978364

Total removal of the larynx may be required to treat laryngeal cancer: speech is lost. This article shows that it may be possible to restore speech by sensing movement of the remaining speech articulators and use machine learning algorithms to derive... Read More about Restoring speech following total removal of the larynx by a learned transformation from sensor data to acoustics.

Analytical and finite-element study of optimal strain distribution in various beam shapes for energy harvesting applications (2016)
Journal Article
Ooi, B. L., Gilbert, J. M., & Aziz, A. R. A. (2016). Analytical and finite-element study of optimal strain distribution in various beam shapes for energy harvesting applications. Acta Mechanica Sinica, 32(4), 670-683. https://doi.org/10.1007/s10409-016-0557-3

Due to the increasing demand for harvesting energy from environmental vibration, for use in self-powered electronic applications, cantilever-based vibration energy harvesting has attracted great interest from various parties and become one of the mos... Read More about Analytical and finite-element study of optimal strain distribution in various beam shapes for energy harvesting applications.

A silent speech system based on permanent magnet articulography and direct synthesis (2016)
Journal Article
Gonzalez, J. A., Cheah, L. A., Gilbert, J. M., Bai, J., Ell, S. R., Green, P. D., & Moore, R. K. (2016). A silent speech system based on permanent magnet articulography and direct synthesis. Computer speech & language, 39, 67-87. https://doi.org/10.1016/j.csl.2016.02.002

In this paper we present a silent speech interface (SSI) system aimed at restoring speech communication for individuals who have lost their voice due to laryngectomy or diseases affecting the vocal folds. In the proposed system, articulatory data cap... Read More about A silent speech system based on permanent magnet articulography and direct synthesis.

Modelling and optimisation of a bimorph piezoelectric cantilever beam in an energy harvesting application (2016)
Journal Article
Thein, C. K., Ooi, B. L., Liu, J. S., & Gilbert, J. M. (2016). Modelling and optimisation of a bimorph piezoelectric cantilever beam in an energy harvesting application. Journal of Engineering Science and Technology, 11(2), 212-227

Piezoelectric materials are excellent transducers in converting vibrational energy into electrical energy, and vibration-based piezoelectric generators are seen as an enabling technology for wireless sensor networks, especially in selfpowered devices... Read More about Modelling and optimisation of a bimorph piezoelectric cantilever beam in an energy harvesting application.

Switching damping for a frequency-tunable electromagnetic energy harvester (2015)
Journal Article
Ooi, B. L., Gilbert, J. M., & Aziz, A. R. A. (2015). Switching damping for a frequency-tunable electromagnetic energy harvester. Sensors and Actuators A: Physical, 234, 311-320. https://doi.org/10.1016/j.sna.2015.09.022

© 2015 Elsevier B.V. All rights reserved. This paper demonstrates the possibility to widen the operational bandwidth of an electromagnetic energy harvester by switching the values of electrical damping coefficient at different points within the oscil... Read More about Switching damping for a frequency-tunable electromagnetic energy harvester.

Design of wideband vibration-based electromagnetic generator by means of dual-resonator (2014)
Journal Article
Ooi, B. L., & Gilbert, J. M. (2014). Design of wideband vibration-based electromagnetic generator by means of dual-resonator. Sensors and Actuators A: Physical, 213, 9-18. https://doi.org/10.1016/j.sna.2014.03.037

This paper describes the design of a wideband electromagnetic energy harvester that utilizes a novel dual-resonator method to improve the operational frequency range of the vibration-based generator. The device consists of two separate resonator syst... Read More about Design of wideband vibration-based electromagnetic generator by means of dual-resonator.

Design and optimisation of a footfall energy harvesting system (2014)
Journal Article
Gilbert, J. M., & Balouchi, F. (2014). Design and optimisation of a footfall energy harvesting system. Journal of Intelligent Material Systems and Structures, 25(14), 1746-1756. https://doi.org/10.1177/1045389X14523853

The scavenging of electrical energy from normal human activity has a number of attractions, and footfall energy is seen as one of the most attractive sources. However, footfall motion is characterised by relatively large forces and low velocities, an... Read More about Design and optimisation of a footfall energy harvesting system.

A vibrating cantilever footfall energy harvesting device (2014)
Journal Article
Gilbert, J. M., & Balouchi, F. (2014). A vibrating cantilever footfall energy harvesting device. Journal of Intelligent Material Systems and Structures, 25(14), 1738-1745. https://doi.org/10.1177/1045389X14521880

Human footfall is an attractive source of energy for harvesting for low-power applications. However, the nature of footfall is poorly matched to electromagnetic generators. Footfall motion is characterised by high forces and low speeds, while electro... Read More about A vibrating cantilever footfall energy harvesting device.

Small-vocabulary speech recognition using a silent speech interface based on magnetic sensing (2012)
Journal Article
Hofe, R., Ell, S. R., Fagan, M. J., Gilbert, J., Green, P. D., Moore, R. K., & Rybchenko, S. (2013). Small-vocabulary speech recognition using a silent speech interface based on magnetic sensing. Speech communication, 55(1), 22-32. https://doi.org/10.1016/j.specom.2012.02.001

This paper reports on word recognition experiments using a silent speech interface based on magnetic sensing of articulator movements. A magnetic field was generated by permanent magnet pellets fixed to relevant speech articulators. Magnetic field se... Read More about Small-vocabulary speech recognition using a silent speech interface based on magnetic sensing.

Speech synthesis parameter generation for the assistive silent speech interface MVOCA (2011)
Journal Article
Hofe, R., Ell, S. R., Fagan, M. J., Gilbert, J. M., Green, P. D., Moore, R. K., & Rybchenko, S. I. (2011). Speech synthesis parameter generation for the assistive silent speech interface MVOCA. Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH, 3009 - 3012

In previous publications, a silent speech interface based on permanent-magnetic articulography (PMA) has been introduced and evaluated using standard automatic speech recognition techniques. However, word recognition is a task that is computationally... Read More about Speech synthesis parameter generation for the assistive silent speech interface MVOCA.

Isolated word recognition of silent speech using magnetic implants and sensors (2010)
Journal Article
Gilbert, J. M., Rybchenko, S. I., Hofe, R., Ell, S. R., Fagan, M. J., Moore, R. K., & Green, P. (2010). Isolated word recognition of silent speech using magnetic implants and sensors. Medical engineering & physics, 32(10), 1189-1197. https://doi.org/10.1016/j.medengphy.2010.08.011

There are a number of situations where individuals wish to communicate verbally but are unable to use conventional means so called 'silent speech'. These include speakers in noisy and covert situations as well as patients who have lost their voice as... Read More about Isolated word recognition of silent speech using magnetic implants and sensors.

Silent speech interfaces (2009)
Journal Article
Denby, B., Schultz, T., Honda, K., Hueber, T., Gilbert, J. M., & Brumberg, J. S. (2010). Silent speech interfaces. Speech communication, 52(4), 270-287. https://doi.org/10.1016/j.specom.2009.08.002

The possibility of speech processing in the absence of an intelligible acoustic signal has given rise to the idea of a 'silent speech' interface, to be used as an aid for the speech-handicapped, or as part of a communications system operating in sile... Read More about Silent speech interfaces.

Comparison of energy harvesting systems for wireless sensor networks (2008)
Journal Article
Balouchi, F., & Gilbert, J. M. (2008). Comparison of energy harvesting systems for wireless sensor networks. International Journal of Automation and Computing, 5(4), 334-347. https://doi.org/10.1007/s11633-008-0334-2

Wireless sensor networks (WSNs) offer an attractive solution to many environmental, security, and process monitoring problems. However, one barrier to their fuller adoption is the need to supply electrical power over extended periods of time without... Read More about Comparison of energy harvesting systems for wireless sensor networks.

Development of a (silent) speech recognition system for patients following laryngectomy (2007)
Journal Article
Fagan, M. J., Ell, S. R., Gilbert, J. M., Sarrazin, E., & Chapman, P. M. (2008). Development of a (silent) speech recognition system for patients following laryngectomy. Medical engineering & physics, 30(4), 419-425. https://doi.org/10.1016/j.medengphy.2007.05.003

Surgical voice restoration post-laryngectomy has a number of limitations and drawbacks. The present gold standard involves the use of a tracheo-oesophageal fistula (TOF) valve to divert air from the lungs into the throat, which vibrates, and from thi... Read More about Development of a (silent) speech recognition system for patients following laryngectomy.

Design of electronic systems based on functional capability (2007)
Journal Article
Gilbert, J. M. (2008). Design of electronic systems based on functional capability. Quality and Reliability Engineering International, 24(1), 3-21. https://doi.org/10.1002/qre.856

An important measure of design quality is the extent to which a circuit design is able to meets its specification in the presence of component parameter variations. Of equal importance is knowing how to improve this capability most effectively. This... Read More about Design of electronic systems based on functional capability.