Skip to main content

Research Repository

Advanced Search

All Outputs (43)

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.

Analytical modeling for switched damping electromagnetic energy harvester (2016)
Journal Article
Ooi, B. L., Gilbert, J. M., Aziz, A. R. A., & Thein, C. K. (2016). Analytical modeling for switched damping electromagnetic energy harvester. Lecture Notes in Electrical Engineering, 379, 1-12. https://doi.org/10.1007/978-3-319-30117-4_1

© Springer International Publishing Switzerland 2016. This paper presents a novel switched damping method which is able to improve the operational bandwidth of a linear electromagnetic energy harvester. In this system, different damping coefficients,... Read More about Analytical modeling for switched damping electromagnetic energy harvester.

Integrating user-centred design in the development of a silent speech interface based on permanent magnetic articulography (2015)
Book Chapter
Cheah, L. A., Gilbert, J. M., Gonzalez, J. A., Bai, J., Ell, S. R., Fagan, M. J., …Rychenko, S. I. (2015). Integrating user-centred design in the development of a silent speech interface based on permanent magnetic articulography. In Biomedical Engineering Systems and Technologies; Communications in Computer and Information Science (324-337). Springer Verlag. https://doi.org/10.1007/978-3-319-27707-3_20

Abstract: A new wearable silent speech interface (SSI) based on Permanent Magnetic Articulography (PMA) was developed with the involvement of end users in the design process. Hence, desirable features such as appearance, port-ability, ease of use and... Read More about Integrating user-centred design in the development of a silent speech interface based on permanent magnetic articulography.

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.

Sex-biased parental care and sexual size dimorphism in a provisioning arthropod (2015)
Journal Article
Field, J., Shreeves, G., Kennedy, M., Brace, S., & Gilbert, J. D. J. (2015). Sex-biased parental care and sexual size dimorphism in a provisioning arthropod. Behavioral Ecology and Sociobiology, 69(12), 1897-1906. https://doi.org/10.1007/s00265-015-2002-1

The diverse selection pressures driving the evolution of sexual size dimorphism (SSD) have long been debated. Whilst the balance between fecundity selection and sexual selection has received much attention, explanations based on sex-specific ecology... Read More about Sex-biased parental care and sexual size dimorphism in a provisioning arthropod.

The evolution of parental care in insects: a test of current hypotheses (2015)
Journal Article
Gilbert, J. D. J., & Manica, A. (2015). The evolution of parental care in insects: a test of current hypotheses. Evolution, 69(5), 1255-1270. https://doi.org/10.1111/evo.12656

Which sex should care for offspring is a fundamental question in evolution. Invertebrates, and insects in particular, show some of the most diverse kinds of parental care of all animals, but to date there has been no broad comparative study of the ev... Read More about The evolution of parental care in insects: a test of current hypotheses.

Functional equivalence of grasping cerci and nuptial food gifts in promoting ejaculate transfer in katydids (2014)
Journal Article
Vahed, K., Gilbert, J. D. J., Weissman, D. B., & Barrientos-Lozano, L. (2014). Functional equivalence of grasping cerci and nuptial food gifts in promoting ejaculate transfer in katydids. Evolution, 68(7), 2052-2065. https://doi.org/10.1111/evo.12421

The function of nuptial gifts has generated longstanding debate. Nuptial gifts consumed during ejaculate transfer may allow males to transfer more ejaculate than is optimal for females. However, gifts may simultaneously represent male investment in o... Read More about Functional equivalence of grasping cerci and nuptial food gifts in promoting ejaculate transfer in katydids.

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.

Cytochrome b divergence between avian sister species is linked to generation length and body mass (2014)
Journal Article
Thomson, C. E., Gilbert, J. D. J., & Brooke, M. D. L. (2014). Cytochrome b divergence between avian sister species is linked to generation length and body mass. PLoS ONE, 9(2), Article e85006. https://doi.org/10.1371/journal.pone.0085006

It is increasingly realised that the molecular clock does not tick at a constant rate. Rather, mitochondrial mutation rates are influenced by factors such as generation length and body mass. This has implications for the use of genetic data in specie... Read More about Cytochrome b divergence between avian sister species is linked to generation length and body mass.

Thrips domiciles protect larvae from desiccation in an arid environment (2014)
Journal Article
Gilbert, J. D. (2014). Thrips domiciles protect larvae from desiccation in an arid environment. Behavioral ecology, 25(6), 1338-1346. https://doi.org/10.1093/beheco/aru128

Desiccation is a particular risk for small animals in arid environments. In response, many organisms “construct niches,” favorable microenvironments where they spend part or all of their life cycle. Some maintain such environments for their offspring... Read More about Thrips domiciles protect larvae from desiccation in an arid environment.

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

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.

Evaluation of a silent speech interface based on magnetic sensing (2010)
Conference Proceeding
Hofe, R., Ell, S. R., Fagan, M. J., Gilbert, J. M., Green, P. D., Moore, R. K., & Rybchenko, S. I. (2010). Evaluation of a silent speech interface based on magnetic sensing.

This paper reports on isolated word recognition experiments using a novel silent speech interface. The interface consist of magnetic pellets that are fixed to relevant speech articulators, and a set of magnetic field sensors that measure changes in t... Read More about Evaluation of a silent speech interface based on magnetic sensing.

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.